From c50e27ab7a5634c14b55b16ca50b49c9b3b6e382 Mon Sep 17 00:00:00 2001
From: DongjieHe <hedongjie15@gmail.com>
Date: Mon, 20 May 2024 10:32:57 +0800
Subject: [PATCH] refactor code; upgrade soot to 4.5.0

---
 .github/workflows/docker-image.yml            |   34 +-
 .github/workflows/gradle.yml                  |   26 +-
 README.md                                     |   54 +-
 artifact/qilin.py                             |    9 +-
 artifact/run.py                               |   20 +-
 artifact/runbach.py                           |   21 +-
 artifact/util/Util.py                         |    2 +
 docs/QilinCodeStructure.html                  | 1225 ++++++++++++++---
 docs/example/example01/src/Main.java          |   58 +-
 docs/index.html                               |  196 ++-
 qilin.core/build.gradle                       |    4 +-
 .../src/qilin/core/ArtificialMethod.java      |   21 +-
 qilin.core/src/qilin/core/CorePTA.java        |   16 +-
 qilin.core/src/qilin/core/PTA.java            |   28 +-
 qilin.core/src/qilin/core/PTAScene.java       |   26 +-
 qilin.core/src/qilin/core/VirtualCalls.java   |   11 +-
 .../qilin/core/builder/CallGraphBuilder.java  |   32 +-
 .../qilin/core/builder/ExceptionHandler.java  |   20 +-
 .../qilin/core/builder/FakeMainFactory.java   |    9 +-
 .../qilin/core/builder/MethodNodeFactory.java |   51 +-
 qilin.core/src/qilin/core/pag/Field.java      |    9 +-
 qilin.core/src/qilin/core/pag/MethodPAG.java  |   15 +-
 qilin.core/src/qilin/core/pag/PAG.java        |   28 +-
 .../qilin/core/reflection/TamiflexModel.java  |   40 +-
 .../core/sets/UnmodifiablePointsToSet.java    |    6 +-
 qilin.core/src/qilin/core/solver/Solver.java  |   33 +-
 .../parm/heapabst/HeuristicAbstractor.java    |    5 +-
 qilin.core/src/qilin/stat/CallGraphStat.java  |    2 +-
 qilin.core/src/qilin/stat/Exporter.java       |    6 +-
 qilin.core/src/qilin/stat/PAGStat.java        |    6 +-
 qilin.core/src/qilin/stat/PointsToStat.java   |   23 +-
 .../src/qilin/stat/SimplifiedEvaluator.java   |   25 +-
 qilin.core/src/qilin/stat/TypeClientStat.java |   21 +-
 qilin.core/src/qilin/util/PTAUtils.java       |   64 +-
 qilin.pta/build.gradle                        |    2 +-
 qilin.pta/src/driver/Main.java                |    7 +-
 qilin.pta/src/driver/PTAComparator.java       |    9 +-
 qilin.pta/src/driver/PTAFactory.java          |   22 +-
 qilin.pta/src/driver/PTAOption.java           |   11 +-
 .../bean/RepresentativeContextSelector.java   |    8 +-
 .../toolkits/common/FieldPointstoGraph.java   |    7 +-
 .../src/qilin/pta/toolkits/common/OAG.java    |    8 +-
 .../qilin/pta/toolkits/common/ToolUtil.java   |    1 -
 .../pta/toolkits/conch/AbstractConch.java     |   16 +-
 .../qilin/pta/toolkits/conch/AbstractPAG.java |    9 +-
 .../src/qilin/pta/toolkits/conch/Conch.java   |   15 +-
 .../toolkits/conch/DepOnParamAnalysis.java    |    6 +-
 .../pta/toolkits/conch/LeakAnalysis.java      |    6 +-
 .../src/qilin/pta/toolkits/conch/SMPAG.java   |    6 +-
 .../dd/CtxTunnelingFeaturesTrueTable.java     |   19 +-
 .../pta/toolkits/dd/FeaturesTrueTable.java    |   16 +-
 .../pta/toolkits/dd/TunnelingConstructor.java |    6 +-
 .../toolkits/debloaterx/ContainerFinder.java  |    9 +-
 .../pta/toolkits/debloaterx/DebloaterX.java   |   16 +-
 .../debloaterx/HeapContainerQuery.java        |   10 +-
 .../debloaterx/IntraFlowAnalysis.java         |   17 +-
 .../qilin/pta/toolkits/debloaterx/XPAG.java   |   24 +-
 .../pta/toolkits/debloaterx/XUtility.java     |   19 +-
 .../src/qilin/pta/toolkits/eagle/Eagle.java   |   27 +-
 .../pta/toolkits/mahjong/HeapAbstraction.java |    2 +-
 .../toolkits/mahjong/automata/DFAFactory.java |    9 +-
 .../toolkits/mahjong/automata/DFAState.java   |    6 +-
 .../src/qilin/pta/toolkits/selectx/BNode.java |    1 -
 .../src/qilin/pta/toolkits/selectx/G.java     |    9 +-
 .../src/qilin/pta/toolkits/selectx/L.java     |    7 +-
 .../qilin/pta/toolkits/selectx/Selectx.java   |   33 +-
 .../pta/toolkits/turner/AbstractMVFG.java     |   24 +-
 .../src/qilin/pta/toolkits/turner/OCG.java    |   20 +-
 .../src/qilin/pta/toolkits/turner/Turner.java |    7 +-
 .../analysis/PotentialContextElement.java     |    9 +-
 .../pta/toolkits/zipper/analysis/Zipper.java  |   17 +-
 .../zipper/flowgraph/FlowAnalysis.java        |   23 +-
 .../zipper/flowgraph/ObjectFlowGraph.java     |   17 +-
 qilin.pta/src/qilin/pta/tools/BasePTA.java    |    1 -
 .../src/qilin/pta/tools/DebloatedPTA.java     |   17 +-
 .../pta/tools/PartialCallSiteSensPTA.java     |   26 +-
 .../qilin/pta/tools/PartialObjSensPTA.java    |   21 +-
 qilin.pta/src/qilin/pta/tools/ZipperPTA.java  |   20 +-
 .../test/qilin/test/util/JunitTests.java      |    1 +
 qilin.util/src/qilin/util/DataFactory.java    |    7 +-
 qilin.util/src/qilin/util/Util.java           |    6 +-
 .../qilin/util/graph/DirectedGraphImpl.java   |    7 +-
 .../src/qilin/util/graph/Reachability.java    |    7 +-
 .../src/qilin/util/graph/SCCMergedGraph.java  |    6 +-
 .../graph/StronglyConnectedComponents.java    |    6 +-
 .../qilin/util/graph/TopologicalSorter.java   |    6 +-
 .../src/qilin/util/queue/UniqueQueue.java     |    7 +-
 87 files changed, 2263 insertions(+), 501 deletions(-)

diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index 371faac..7654c7d 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -13,20 +13,20 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout
-      uses: actions/checkout@v2
-      with:
-        submodules: 'true'
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v1
-    - name: Login to DockerHub
-      uses: docker/login-action@v1
-      with:
-        username: hdjay2013
-        password: ${{ secrets.DOCKER }}
-    - name: Build and push
-      uses: docker/build-push-action@v2
-      with:
-        context: .
-        push: true
-        tags: hdjay2013/qilin:latest
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          submodules: 'true'
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: hdjay2013
+          password: ${{ secrets.DOCKER }}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: hdjay2013/qilin:latest
diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index 6aa6c75..ecd2373 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -17,20 +17,20 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ ubuntu-latest, macos-latest ]
         # os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
-      with:
-        submodules: 'true'
-    - name: Set up JDK 17
-      uses: actions/setup-java@v2
-      with:
-        java-version: '17'
-        distribution: 'adopt'
-    - name: Setup and execute Gradle 'test' task
-      uses: gradle/gradle-build-action@937999e9cc2425eddc7fd62d1053baf041147db7
-      with:
-        arguments: test
+      - uses: actions/checkout@v2
+        with:
+          submodules: 'true'
+      - name: Set up JDK 17
+        uses: actions/setup-java@v2
+        with:
+          java-version: '17'
+          distribution: 'adopt'
+      - name: Setup and execute Gradle 'test' task
+        uses: gradle/gradle-build-action@937999e9cc2425eddc7fd62d1053baf041147db7
+        with:
+          arguments: test
diff --git a/README.md b/README.md
index 3441a52..a657e26 100644
--- a/README.md
+++ b/README.md
@@ -1,61 +1,89 @@
 [![Gradle](https://github.com/QilinPTA/Qilin/actions/workflows/gradle.yml/badge.svg?event=push)](https://github.com/QilinPTA/Qilin/actions/workflows/gradle.yml)
 [![Docker](https://github.com/QilinPTA/Qilin/actions/workflows/docker-image.yml/badge.svg?event=push)](https://github.com/QilinPTA/Qilin/actions/workflows/docker-image.yml)
-[![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/QilinPTA/Qilin) 
+[![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/QilinPTA/Qilin)
 
 > :warning: [Documentation for Qilin](https://qilinpta.github.io/) is under development.
+
 # News
-* <b>[DebloaterX](https://github.com/DongjieHe/DebloaterX) published in our [OOPSLA paper](https://dongjiehe.github.io/mypaper/OOPSLA2023_DebloaterX_Preprint.pdf) is now available in Qilin</b>
+
+* <b>[DebloaterX](https://github.com/DongjieHe/DebloaterX) published in
+  our [OOPSLA paper](https://dongjiehe.github.io/mypaper/OOPSLA2023_DebloaterX_Preprint.pdf) is now available in
+  Qilin</b>
 * <b>Qilin now supports Soot-4.4.0</b>
+
 # Qilin: A fully imperative Java Pointer Analysis Framework.
-The repository hosts Qilin, a new Java pointer analysis framework for supporting fine-grained context-sensitivity. For technical details, please refer to our [ECOOP'22 paper](https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2022.30).
+
+The repository hosts Qilin, a new Java pointer analysis framework for supporting fine-grained context-sensitivity. For
+technical details, please refer to
+our [ECOOP'22 paper](https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2022.30).
 
 ## A Quick Start
+
 ### Prerequisites
+
 * Java 16+ (Qilin uses the pattern matching for `instanceof` provided since Java 16).
 * Python 3.5+ (the api `subprocess.run` used in `artifact/qilin.py` is added in Python 3.5).
 
 ### Download
-This repository contains a `submodule` that contains a set of real-world ready-to-use benchmarks for Qilin. 
+
+This repository contains a `submodule` that contains a set of real-world ready-to-use benchmarks for Qilin.
 If you want to run Qilin on these benchmarks, please use the following command to fetch the Qilin source code:
+
 ```
 $ git clone --recurse-submodules https://github.com/QilinPTA/Qilin.git
 ```
 
 If you have cloned Qilin in a normal way, you still can use the command below to download these benchmarks:
+
 ```
 $ git submodule update --init
 ```
+
 ### Building Qilin with Gradle
+
 We use Gradle as the build automation tool. To build Qilin, use
+
 ```
 $ ./run.sh
 ```
-This script contains commands to generate `Qilin-VERSION-SNAPSHOT.jar`, which will be automatically moved into `artifact/`.
 
-For users who want to build Qilin in IDE, please refer to [this page](https://github.com/QilinPTA/Qilin/wiki/Set-up-the-Debugging-Environment-for-Qilin-in-IntelliJ-IDEA).
+This script contains commands to generate `Qilin-VERSION-SNAPSHOT.jar`, which will be automatically moved
+into `artifact/`.
+
+For users who want to build Qilin in IDE, please refer
+to [this page](https://github.com/QilinPTA/Qilin/wiki/Set-up-the-Debugging-Environment-for-Qilin-in-IntelliJ-IDEA).
 
 ### Using Qilin
+
 You can use Qilin either through its command-line interface (e.g., `driver.Main`) or as a library.
-For researchers who are working on Java pointer analysis, we have provided a whole set of scripts, benchmarks (e.g., `DaCapo2006`) and jdk libraries under `artifact/`.
+For researchers who are working on Java pointer analysis, we have provided a whole set of scripts, benchmarks (
+e.g., `DaCapo2006`) and jdk libraries under `artifact/`.
 
 To test Qilin, you can directly do:
+
 ```
 $ cd artifact
 $ python3 run.py antlr ci -print
 ```
-The above command will analyse `antlr` with a context-insensitive pointer analysis with some metrics being displayed on the screen.  
+
+The above command will analyse `antlr` with a context-insensitive pointer analysis with some metrics being displayed on
+the screen.  
 We plan to optimise the `run.py` script to make its help info more user-friendly.
 
 ## Documentation
 
-| About Qilin       | Setup  Guide         | User Guide  | Developer Guide  |
-| ------------- |:-------------:| -----:|-----:|
-| Introducing Qilin -- [what it does](https://qilinpta.github.io/Qilin/#what-is-qilin) and [how we design it](https://github.com/QilinPTA/Qilin/wiki/Qilin-Design#qilin-design)      | A step by step [setup guide](https://github.com/QilinPTA/Qilin/wiki/Setup-Guide#getting-started) to build Qilin | [Command-line options](https://github.com/QilinPTA/Qilin/wiki/Full-list-of-Qilin-options) of Qilin, and running Qilin with [an example](https://github.com/QilinPTA/Qilin/wiki/Analyse-a-Simple-Java-Program#an-example) | Detailed [technical documentation](https://qilinpta.github.io/Qilin/QilinCodeStructure.html) and how to [use Qilin as a lib](https://github.com/QilinPTA/Qilin/wiki/Qilin-as-a-lib) for your tool or [write your own analyses](https://github.com/QilinPTA/Qilin/wiki/Write-your-own-analysis-in-Qilin) in Qilin |
+| About Qilin                                                                                                                                                                   |                                                  Setup  Guide                                                   |                                                                                                                                                                                                               User Guide |                                                                                                                                                                                                                                                                                                  Developer Guide |
+|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:---------------------------------------------------------------------------------------------------------------:|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|
+| Introducing Qilin -- [what it does](https://qilinpta.github.io/Qilin/#what-is-qilin) and [how we design it](https://github.com/QilinPTA/Qilin/wiki/Qilin-Design#qilin-design) | A step by step [setup guide](https://github.com/QilinPTA/Qilin/wiki/Setup-Guide#getting-started) to build Qilin | [Command-line options](https://github.com/QilinPTA/Qilin/wiki/Full-list-of-Qilin-options) of Qilin, and running Qilin with [an example](https://github.com/QilinPTA/Qilin/wiki/Analyse-a-Simple-Java-Program#an-example) | Detailed [technical documentation](https://qilinpta.github.io/Qilin/QilinCodeStructure.html) and how to [use Qilin as a lib](https://github.com/QilinPTA/Qilin/wiki/Qilin-as-a-lib) for your tool or [write your own analyses](https://github.com/QilinPTA/Qilin/wiki/Write-your-own-analysis-in-Qilin) in Qilin |
 
 ## Contributing to Qilin
-Contributions are always welcome. Qilin is an open-source project that we publish in the hope that it will be useful to the research community as a whole. 
-If you have a new feature or a bug fix that you would like to see in the official code repository, please open a merge request here on Github and leave a short description of what you have done.
+
+Contributions are always welcome. Qilin is an open-source project that we publish in the hope that it will be useful to
+the research community as a whole.
+If you have a new feature or a bug fix that you would like to see in the official code repository, please open a merge
+request here on Github and leave a short description of what you have done.
 
 ## License
+
 Qilin is licenced under the GPL v2.1 license, see the LICENSE file.
 
diff --git a/artifact/qilin.py b/artifact/qilin.py
index f2ba396..4234c50 100755
--- a/artifact/qilin.py
+++ b/artifact/qilin.py
@@ -1,7 +1,10 @@
 #!/usr/bin/python3
 
-import os, sys, subprocess
 import fnmatch
+import os
+import subprocess
+import sys
+
 from util.opt import *
 
 # HOME
@@ -10,6 +13,7 @@
 XMX = '-Xmx512g'
 timeout = -1
 
+
 def qilinJarFile():
     qilinJars = []
     for f in os.listdir(PA_HOME):
@@ -28,7 +32,8 @@ def qilinJarFile():
     else:
         sys.exit('could not find Qilin executable file.')
 
-CLASSPATH = os.pathsep.join([os.path.join(PA_HOME, qilinJarFile()),])
+
+CLASSPATH = os.pathsep.join([os.path.join(PA_HOME, qilinJarFile()), ])
 
 runJava_cmd = 'java -Xms1g %s -cp ' + CLASSPATH + ' driver.Main %s'
 OPTIONMESSAGE = 'The valid OPTIONs are:\n' \
diff --git a/artifact/run.py b/artifact/run.py
index a4fdcc1..920b77c 100755
--- a/artifact/run.py
+++ b/artifact/run.py
@@ -1,6 +1,8 @@
 #!/usr/bin/python3
 
-import os, sys, shutil
+import os
+import shutil
+import sys
 
 assert sys.version_info >= (3, 5), "Python version does not meet the minimum requirements, i.e., >= 3.5"
 
@@ -16,16 +18,17 @@
 from util.benchmark import JREVERSION
 
 # ANALYSES = ['1o', 'Z-2o', 'E-2o', 'T-2o', '2o', 'Z-3o', 'T-3o', 'E-3o', '3o', '1c', '2c', 'M-2o', '2h', '2t', 'Z-2c', 'M-2c']
-ANALYSES = ['insens', '1o', 'Z-2o', 'E-2o', 'T-2o', '2o', '2t', '1c', 'M-2o', '2h', 'B-2o', '1c', 's-1c', 's-2c', '2c', '3o', 'T-3o', 'E-3o', 'Z-3o']
+ANALYSES = ['insens', '1o', 'Z-2o', 'E-2o', 'T-2o', '2o', '2t', '1c', 'M-2o', '2h', 'B-2o', '1c', 's-1c', 's-2c', '2c',
+            '3o', 'T-3o', 'E-3o', 'Z-3o']
 
 # for ZIPPEROPTIONS
 OoM = {
     'E-3o': ['eclipse', ],
     'Z-3o': ['eclipse', ],
     '3o': ['chart', 'eclipse', 'checkstyle', 'findbugs', 'xalan'],
-    '3o+D':['eclipse',],
-    '3o+DX':['eclipse'],
-    '3o+DC':['eclipse']
+    '3o+D': ['eclipse', ],
+    '3o+DX': ['eclipse'],
+    '3o+DC': ['eclipse']
 }
 TIMEOUT = {
     '3o': ['bloat'],
@@ -104,15 +107,18 @@ def runPTA(analysis, bm, OPTIONSTYLE):
     print(cmd)
     pta.runPointsToAnalysis(cmd.split())
 
+
 OPTIONMESSAGE = 'The valid OPTIONs are:\n' \
                 + option('-help|-h', 'print this message.') \
                 + option('-print', 'print the analyses results on screen.') \
                 + option('-clean', 'remove previous outputs.') \
                 + option('-cd', 'enable context debloating.') \
-                + option('-cda=<[CONCH|DEBLOATERX|COLLECTION]>', 'specify the debloating approach (default value is CONCH)') \
+                + option('-cda=<[CONCH|DEBLOATERX|COLLECTION]>',
+                         'specify the debloating approach (default value is CONCH)') \
                 + option('-dump', 'dump statistics into files.') \
                 + option('<PTA>', 'specify pointer analysis.') \
-                + option('-cga=<[CHA|VTA|RTA|GEOM|SPARK|QILIN]>', 'specify the callgraph construction algorithm (default value is QILIN)') \
+                + option('-cga=<[CHA|VTA|RTA|GEOM|SPARK|QILIN]>',
+                         'specify the callgraph construction algorithm (default value is QILIN)') \
                 + option('<Benchmark>', 'specify benchmark.') \
                 + option('-jre=<[jre1.6.0_45|jre1.8.0_312]>', 'specify the JRE version.') \
                 + option('-out=<out>', 'specify output path.') \
diff --git a/artifact/runbach.py b/artifact/runbach.py
index 2f218ba..7e7b39f 100755
--- a/artifact/runbach.py
+++ b/artifact/runbach.py
@@ -1,17 +1,20 @@
 #!/usr/bin/python3
-import os, sys, shutil
+import os
+import shutil
+import sys
+
 import qilin as pta
-from util.opt import *
 import util.TerminalColor as tc
 import util.dacapobach as db
+from util.opt import *
 
 ANALYSES = ['insens', 'Z-2o', 'E-2o', '2o', 'Z-3o', 'E-3o', '3o']
 
 # eclipse and jython are always unscalable.
 UNSCALABLE = {
-    '3o': ['avrora', 'batik', 'h2', 'luindex', 'lusearch', 'pmd', 'sunflow', 'tradebeans', 'xalan'], # OoM
-    'E-3o': ['avrora', 'batik', 'h2', 'luindex', 'lusearch', 'pmd', 'sunflow', 'tradebeans', 'xalan'], # OoM
-    'Z-3o': ['avrora', 'batik', 'h2', 'luindex', 'lusearch', 'pmd', 'sunflow', 'tradebeans', 'xalan'], # OoM
+    '3o': ['avrora', 'batik', 'h2', 'luindex', 'lusearch', 'pmd', 'sunflow', 'tradebeans', 'xalan'],  # OoM
+    'E-3o': ['avrora', 'batik', 'h2', 'luindex', 'lusearch', 'pmd', 'sunflow', 'tradebeans', 'xalan'],  # OoM
+    'Z-3o': ['avrora', 'batik', 'h2', 'luindex', 'lusearch', 'pmd', 'sunflow', 'tradebeans', 'xalan'],  # OoM
     '3o+D': ['batik', 'h2'],
     '3o+DX': ['h2'],
 }
@@ -26,9 +29,11 @@
 
 BATCHPATH = 'benchmarks/dacapo-bach/'
 
+
 def getPath(dir, file):
     return os.path.join(dir, file)
 
+
 def getPTACommand(analysis, bm, OPTIONSTYLE):
     options = []
     options += BASICOPTIONS
@@ -88,12 +93,14 @@ def runPTA(analysis, bm, OPTIONSTYLE):
                 + option('-clean', 'remove previous outputs.') \
                 + option('-dump', 'dump statistics into files.') \
                 + option('<PTA>', 'specify pointer analysis.') \
-                + option('-cga=<[CHA|VTA|RTA|GEOM|SPARK|QILIN]>', 'specify the callgraph construction algorithm (default value is QILIN)') \
+                + option('-cga=<[CHA|VTA|RTA|GEOM|SPARK|QILIN]>',
+                         'specify the callgraph construction algorithm (default value is QILIN)') \
                 + option('<Benchmark>', 'specify benchmark.') \
                 + option('-out=<out>', 'specify output path.') \
                 + option('-pre', 'run pre-analysis only.') \
                 + option('-cd', 'enable context debloating.') \
-                + option('-cda=<[CONCH|DEBLOATERX|COLLECTION]>', 'specify the debloating approach (default value is CONCH)') \
+                + option('-cda=<[CONCH|DEBLOATERX|COLLECTION]>',
+                         'specify the debloating approach (default value is CONCH)') \
                 + option('-OS=<zipper|mahjong>', 'specify the style of configurations.') \
                 + option('-all', 'run all analyses for specified benchmark(s) if ONLY benchmark(s) is specified;\n\
 				run specified analyses for all benchmark(s) if ONLY analyses is specified;\n\
diff --git a/artifact/util/Util.py b/artifact/util/Util.py
index 17d4425..3cc5dce 100644
--- a/artifact/util/Util.py
+++ b/artifact/util/Util.py
@@ -6,6 +6,7 @@
 import subprocess
 from util.ptaout import PTAOutput
 
+
 def checkJavaVersion():
     javaversion = subprocess.check_output(['java', '-version'], stderr=subprocess.STDOUT)
     jv = javaversion.decode("utf-8")
@@ -16,6 +17,7 @@ def checkJavaVersion():
         print('Error: JRE version does not meet the minimum requirement, i.e., >= 16')
         exit()
 
+
 def checkConsistency(pta1, pta2):
     if pta1.app != pta2.app or pta1.analysisName != pta2.analysisName or \
             pta1.mayFailCasts != pta2.mayFailCasts or \
diff --git a/docs/QilinCodeStructure.html b/docs/QilinCodeStructure.html
index 3705f08..cc4e9b1 100644
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+    <link rel="stylesheet" href="QilinCodeStructure.html_files/freeplane2html.css" type="text/css"/>
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+    <script type="text/javascript"><!--
           
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+          coords="1404,1197,1623,1227"/>
+    <area shape="rect" href="#FMID_1337934979FM" alt="PTA evaluator" title="PTA evaluator"
+          coords="1054,1230,1233,1264"/>
+    <area shape="rect" href="#FMID_1631542550FM" alt="qilin.pta" title="qilin.pta" coords="471,300,603,336"/>
+    <area shape="rect" href="#FMID_204935873FM" alt="driver" title="driver" coords="358,87,454,121"/>
+    <area shape="rect" href="#FMID_1127153459FM" alt="Main.java" title="Main.java" coords="232,56,341,86"/>
+    <area shape="rect" href="#FMID_168413891FM" alt="PTAOption.java" title="PTAOption.java" coords="191,89,341,119"/>
+    <area shape="rect" href="#FMID_1870669745FM" alt="PTAPattern.java" title="PTAPattern.java"
+          coords="186,122,341,152"/>
+    <area shape="rect" href="#FMID_1258139841FM" alt="concrete PTAs" title="concrete PTAs" coords="294,351,454,385"/>
+    <area shape="rect" href="#FMID_796120006FM" alt="Spark.java" title="Spark.java" coords="161,155,277,185"/>
+    <area shape="rect" href="#FMID_1767122784FM" alt="ObjectSensPTA.java" title="ObjectSensPTA.java"
+          coords="93,188,277,218"/>
+    <area shape="rect" href="#FMID_1575094612FM" alt="CallSiteSensPTA.java" title="CallSiteSensPTA.java"
+          coords="86,221,277,251"/>
+    <area shape="rect" href="#FMID_468923102FM" alt="TypeSensPTA.java" title="TypeSensPTA.java"
+          coords="105,254,277,284"/>
+    <area shape="rect" href="#FMID_147211068FM" alt="HybridObjectSensPTA.java" title="HybridObjectSensPTA.java"
+          coords="46,287,277,317"/>
+    <area shape="rect" href="#FMID_30904192FM" alt="DebloatedPTA.java" title="DebloatedPTA.java"
+          coords="100,320,277,350"/>
+    <area shape="rect" href="#FMID_1448083641FM" alt="TurnerPTA.java" title="TurnerPTA.java" coords="127,353,277,383"/>
+    <area shape="rect" href="#FMID_1735121902FM" alt="MahjongPTA.java" title="MahjongPTA.java"
+          coords="114,386,277,416"/>
+    <area shape="rect" href="#FMID_462522753FM" alt="EaglePTA.java" title="EaglePTA.java" coords="136,419,277,449"/>
+    <area shape="rect" href="#FMID_1279361768FM" alt="ZipperPTA.java" title="ZipperPTA.java" coords="147,452,277,482"/>
+    <area shape="rect" href="#FMID_1561150412FM" alt="BeanPTA.java" title="BeanPTA.java" coords="138,485,277,515"/>
+    <area shape="rect" href="#FMID_1745123289FM" alt="TunnelingPTA.java" title="TunnelingPTA.java"
+          coords="104,518,277,548"/>
+    <area shape="rect" href="#FMID_239532551FM" alt="DataDrivenPTA.java" title="DataDrivenPTA.java"
+          coords="93,551,277,581"/>
+    <area shape="rect" href="#FMID_31840620FM" alt="qilin.microben" title="qilin.microben" coords="417,797,603,833"/>
+    <area shape="rect" href="#FMID_1413269164FM" alt="context sensitivity" title="context sensitivity"
+          coords="198,631,400,665"/>
+    <area shape="rect" href="#FMID_1035661080FM" alt="k-CFA" title="k-CFA" coords="119,584,181,614"/>
+    <area shape="rect" href="#FMID_680749913FM" alt="k-OBJ" title="k-OBJ" coords="121,617,181,647"/>
+    <area shape="rect" href="#FMID_15877272FM" alt="k-Hybrid" title="k-Hybrid" coords="99,650,181,680"/>
+    <area shape="rect" href="#FMID_615689229FM" alt="collections" title="collections" coords="83,683,181,713"/>
+    <area shape="rect" href="#FMID_1587291148FM" alt="flow sensitivity" title="flow sensitivity"
+          coords="235,716,400,750"/>
+    <area shape="rect" href="#FMID_309811131FM" alt="general test cases" title="general test cases"
+          coords="199,883,400,917"/>
+    <area shape="rect" href="#FMID_1914348410FM" alt="array" title="array" coords="123,753,182,783"/>
+    <area shape="rect" href="#FMID_1326871225FM" alt="assign" title="assign" coords="115,786,182,816"/>
+    <area shape="rect" href="#FMID_149783059FM" alt="call" title="call" coords="137,819,182,849"/>
+    <area shape="rect" href="#FMID_1718826441FM" alt="clinit" title="clinit" coords="126,852,182,882"/>
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+    <area shape="rect" href="#FMID_586715466FM" alt="natives" title="natives" coords="109,984,182,1014"/>
+    <area shape="rect" href="#FMID_1885535317FM" alt="reflog" title="reflog" coords="120,1017,182,1047"/>
+    <area shape="rect" href="#FMID_1273262914FM" alt="artifact" title="artifact" coords="493,1151,603,1187"/>
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+    <area shape="rect" href="#FMID_519723870FM" alt="Qilin-version-SNAPSHOT.jar" title="Qilin-version-SNAPSHOT.jar"
+          coords="205,1124,476,1158"/>
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+    <area shape="rect" href="#FMID_1394854654FM" alt="qilin.util" title="qilin.util" coords="910,1267,1042,1303"/>
 </map>
 
-<div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N65543&quot;)" id="imgN65543" /><a id="FMID_1090958577FM" /><div class="nodecontent" style="color:#ffffff;background-color:#484747;font-size:150%;font-weight:bold;"><a href="https://github.com/QilinPTA/Qilin">Qilin's code structure</a> <a href="https://github.com/QilinPTA/Qilin"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="content" id="N65543"><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N66473&quot;)" id="imgN66473" /><a id="FMID_1772126643FM" /><div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core">qilin.core</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="content" id="N66473"><div class="cloud" style="background-color:#ffcccc"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N66515&quot;)" id="imgN66515" /><a id="FMID_1395244479FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;">core</div><div class="content" id="N66515"><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N66559&quot;)" id="imgN66559" /><a id="FMID_501194817FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/pag">PAG</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/pag"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+<div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                       onClick="toggle(&quot;N65543&quot;)" id="imgN65543"/><a id="FMID_1090958577FM"/>
+    <div class="nodecontent" style="color:#ffffff;background-color:#484747;font-size:150%;font-weight:bold;"><a
+            href="https://github.com/QilinPTA/Qilin">Qilin's code structure</a> <a
+            href="https://github.com/QilinPTA/Qilin"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                          style="border-width:0"/></a></div>
+    <div class="content" id="N65543">
+        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                               onClick="toggle(&quot;N66473&quot;)" id="imgN66473"/><a id="FMID_1772126643FM"/>
+            <div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core">qilin.core</a> <a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core"><img
+                    src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a></div>
+            <div class="content" id="N66473">
+                <div class="cloud" style="background-color:#ffcccc"><img src="QilinCodeStructure.html_files/hide.png"
+                                                                         class="hideshow" alt="hide"
+                                                                         onClick="toggle(&quot;N66515&quot;)"
+                                                                         id="imgN66515"/><a id="FMID_1395244479FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;">core</div>
+                    <div class="content" id="N66515">
+                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                               onClick="toggle(&quot;N66559&quot;)" id="imgN66559"/><a
+                                id="FMID_501194817FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a
+                                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/pag">PAG</a>
+                                <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/pag"><img
+                                        src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                        style="border-width:0"/></a></div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
        The pointer assignment graph.
     </p>
-  </span></div><div class="content" id="N66559"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_572844518FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/MethodPAG.java">MethodPAG</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/MethodPAG.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N66658&quot;)" id="imgN66658" /><a id="FMID_255421313FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;">PAG Nodes</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                            <div class="content" id="N66559">
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_572844518FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/MethodPAG.java">MethodPAG</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/MethodPAG.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow"
+                                                       alt="hide" onClick="toggle(&quot;N66658&quot;)"
+                                                       id="imgN66658"/><a id="FMID_255421313FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;">PAG Nodes
+                                    </div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       We have defined a set of PAG nodes with the same names, if possible, as those in "soot/jimple/spark/pag/".
     </p>
-  </span></div><div class="content" id="N66658"><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N66714&quot;)" id="imgN66714" /><a id="FMID_1478479343FM" /><div class="nodecontent" style="color:#484747;background-color:#81a1c1;font-size:83%;">Object Node</div><div class="content" id="N66714"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1527804207FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/StringConstantNode.java">StringConstantNode.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/StringConstantNode.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1532855451FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ClassConstantNode.java">ClassConstantNode.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ClassConstantNode.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1107064112FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/AllocNode.java">AllocNode.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/AllocNode.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1814697921FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextAllocNode.java">ContextAllocNode.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextAllocNode.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N66923&quot;)" id="imgN66923" /><a id="FMID_464521819FM" /><div class="nodecontent" style="color:#484747;background-color:#81a1c1;font-size:83%;">Pointer Node</div><div class="content" id="N66923"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1167842612FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/GlobalVarNode.java">GlobalVarNode.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/GlobalVarNode.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_376326985FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/LocalVarNode.java">LocalVarNode.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/LocalVarNode.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_421583550FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/FieldValNode.java">FieldValNode.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/FieldValNode.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1344198037FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextField.java">ContextField.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextField.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_704597293FM" /><div class="nodecontent" style="color:#484747;background-color:#88c0d0;font-size:83%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextVarNode.java">ContextVarNode.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextVarNode.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div></div></div></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_424767675FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/builder/CallGraphBuilder.java">CallgraphBuilder</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/builder/CallGraphBuilder.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                    <div class="content" id="N66658">
+                                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png"
+                                                               class="hideshow" alt="hide"
+                                                               onClick="toggle(&quot;N66714&quot;)" id="imgN66714"/><a
+                                                id="FMID_1478479343FM"/>
+                                            <div class="nodecontent"
+                                                 style="color:#484747;background-color:#81a1c1;font-size:83%;">Object
+                                                Node
+                                            </div>
+                                            <div class="content" id="N66714">
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_1527804207FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/StringConstantNode.java">StringConstantNode.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/StringConstantNode.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_1532855451FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ClassConstantNode.java">ClassConstantNode.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ClassConstantNode.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_1107064112FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/AllocNode.java">AllocNode.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/AllocNode.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_1814697921FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextAllocNode.java">ContextAllocNode.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextAllocNode.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                            </div>
+                                        </div>
+                                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png"
+                                                               class="hideshow" alt="hide"
+                                                               onClick="toggle(&quot;N66923&quot;)" id="imgN66923"/><a
+                                                id="FMID_464521819FM"/>
+                                            <div class="nodecontent"
+                                                 style="color:#484747;background-color:#81a1c1;font-size:83%;">Pointer
+                                                Node
+                                            </div>
+                                            <div class="content" id="N66923">
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_1167842612FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/GlobalVarNode.java">GlobalVarNode.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/GlobalVarNode.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_376326985FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/LocalVarNode.java">LocalVarNode.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/LocalVarNode.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_421583550FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/FieldValNode.java">FieldValNode.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/FieldValNode.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_1344198037FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextField.java">ContextField.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextField.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png"
+                                                                       class="hideshow" alt="leaf"/><a
+                                                        id="FMID_704597293FM"/>
+                                                    <div class="nodecontent"
+                                                         style="color:#484747;background-color:#88c0d0;font-size:83%;">
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextVarNode.java">ContextVarNode.java</a>
+                                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/pag/ContextVarNode.java"><img
+                                                                src="QilinCodeStructure.html_files/ilink.png"
+                                                                alt="User Link" style="border-width:0"/></a></div>
+                                                </div>
+                                            </div>
+                                        </div>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_424767675FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a
+                                    href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/builder/CallGraphBuilder.java">CallgraphBuilder</a>
+                                <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/builder/CallGraphBuilder.java"><img
+                                        src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                        style="border-width:0"/></a></div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       It provides an API for handling virtual call dispatch.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_56400937FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/builder/ExceptionHandler.java">ExceptionHandler</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/builder/ExceptionHandler.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_56400937FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a
+                                    href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/builder/ExceptionHandler.java">ExceptionHandler</a>
+                                <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/builder/ExceptionHandler.java"><img
+                                        src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                        style="border-width:0"/></a></div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       It provides an API for exception dispatch along the exception-catch-links.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_869430707FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/CorePTA.java">CorePTA.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/CorePTA.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_869430707FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a
+                                    href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/CorePTA.java">CorePTA.java</a>
+                                <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/CorePTA.java"><img
+                                        src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                        style="border-width:0"/></a></div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       This defines an abstract pointer analysis. You can define a concrete pointer analysis (as a subclass) by defining Qilin's three context-sensitivity-controlling parameters.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N67351&quot;)" id="imgN67351" /><a id="FMID_1883478738FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/solver/Solver.java">PTA Solver</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/solver/Solver.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                               onClick="toggle(&quot;N67351&quot;)" id="imgN67351"/><a
+                                id="FMID_1883478738FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;"><a
+                                    href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/solver/Solver.java">PTA
+                                Solver</a> <a
+                                    href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/core/solver/Solver.java"><img
+                                    src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                    style="border-width:0"/></a></div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Qilin's incremental worklist-based constraint solver for supporting pointer analyses with fine-grained context-sensitivity. For more details, please refer to Section 3.3 and Algorithm 1 of our ECOOP'2022 paper.
     </p>
-  </span></div><div class="content" id="N67351"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_971568666FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/sets">incremental sets</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/sets"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                            <div class="content" id="N67351">
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_971568666FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/sets">incremental
+                                        sets</a> <a
+                                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/sets"><img
+                                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                            style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       These classes are modified from their corresponding ones in "soot/jimple/spark/sets".
     </p>
-  </span></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N67467&quot;)" id="imgN67467" /><a id="FMID_753594539FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">Feature Handlers</div><div class="content" id="N67467"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_297298171FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/natives">native codes</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/natives"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1091308165FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/reflection">reflections</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/reflection"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                               onClick="toggle(&quot;N67467&quot;)" id="imgN67467"/><a
+                                id="FMID_753594539FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                Feature Handlers
+                            </div>
+                            <div class="content" id="N67467">
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_297298171FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/natives">native
+                                        codes</a> <a
+                                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/natives"><img
+                                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                            style="border-width:0"/></a></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1091308165FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/reflection">reflections</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/core/reflection"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       We currently discover the reflective targets in a program by using TAMIFLEX before performing pointer analysis on the program. You can design your own reflection handlers here.
     </p>
-  </span></div></div></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N67609&quot;)" id="imgN67609" /><a id="FMID_1858623953FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/parm">parameters</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/parm"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                       onClick="toggle(&quot;N67609&quot;)" id="imgN67609"/><a id="FMID_1858623953FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/parm">parameters</a>
+                        <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/parm"><img
+                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                style="border-width:0"/></a></div>
+                    <div class="note-and-attributes"><span class="note">
     <p>
       This package includes a set of built-in instantiations of Qilin's three context-sensitivity-controlling parameters.
     </p>
-  </span></div><div class="content" id="N67609"><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N67667&quot;)" id="imgN67667" /><a id="FMID_588844366FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">Context Constructors</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                    <div class="content" id="N67609">
+                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                               onClick="toggle(&quot;N67667&quot;)" id="imgN67667"/><a
+                                id="FMID_588844366FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                Context Constructors
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       A context constructor describes how to construct a new context for a method.
     </p>
-  </span></div><div class="content" id="N67667"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1516173377FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/CallsiteCtxConstructor.java">CallsiteCtxConstructor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/CallsiteCtxConstructor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                            <div class="content" id="N67667">
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1516173377FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/CallsiteCtxConstructor.java">CallsiteCtxConstructor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/CallsiteCtxConstructor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (2) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_337829122FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/ObjCtxConstructor.java">ObjCtxConstructor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/ObjCtxConstructor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_337829122FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/ObjCtxConstructor.java">ObjCtxConstructor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/ObjCtxConstructor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (3) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_919649522FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/TypeCtxConstructor.java">TypeCtxConstructor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/TypeCtxConstructor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_919649522FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/TypeCtxConstructor.java">TypeCtxConstructor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/TypeCtxConstructor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (4) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1643786777FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/HybObjCtxConstructor.java">HybObjCtxConstructor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/HybObjCtxConstructor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1643786777FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/HybObjCtxConstructor.java">HybObjCtxConstructor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/HybObjCtxConstructor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (5) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_571039175FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/HybTypeCtxConstructor.java">HybTypeCtxConstructor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/HybTypeCtxConstructor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_571039175FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/HybTypeCtxConstructor.java">HybTypeCtxConstructor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/HybTypeCtxConstructor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Refer to Selective 2-type-sensitive with 1-context-sensitive heap hybrid (s-2type+H) in "Hybrid context-sensitivity for Points-to Analysis" (PLDI'13).
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_322683104FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/InsensCtxConstructor.java">InsensCtxConstructor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/InsensCtxConstructor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_322683104FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/InsensCtxConstructor.java">InsensCtxConstructor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/ctxcons/InsensCtxConstructor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (1) in our ECOOP'22 paper.
     </p>
-  </span></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N68073&quot;)" id="imgN68073" /><a id="FMID_569028628FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">Context Selector</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                               onClick="toggle(&quot;N68073&quot;)" id="imgN68073"/><a
+                                id="FMID_569028628FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                Context Selector
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Context selector selects some context elements from the context of a method to form a new context for a variable declared (or object allocated ) in the method.
     </p>
-  </span></div><div class="content" id="N68073"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_412459172FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/UniformSelector.java">UniformSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/UniformSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                            <div class="content" id="N68073">
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_412459172FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/UniformSelector.java">UniformSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/UniformSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (6) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_195900117FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/InsenSelector.java">InsenSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/InsenSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_195900117FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/InsenSelector.java">InsenSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/InsenSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       This context selector is defined for context-insensitive pointer analysis. For all variables and objects, it returns an empty context.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1360565120FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/HeuristicSelector.java">HeuristicSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/HeuristicSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1360565120FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/HeuristicSelector.java">HeuristicSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/HeuristicSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (8) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1649067982FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/FullMethodLvSelector.java">FullMethodLvSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/FullMethodLvSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1649067982FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/FullMethodLvSelector.java">FullMethodLvSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/FullMethodLvSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       This context selector is used in Data-driven pointer analysis (OOPSLA'2017). Every method can use contexts of different context lengths.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_974978017FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PartialMethodLvSelector.java">PartialMethodLvSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PartialMethodLvSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_974978017FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PartialMethodLvSelector.java">PartialMethodLvSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PartialMethodLvSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (9) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1997357926FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/VarLvSelector.java">VarLvSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/VarLvSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1997357926FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/VarLvSelector.java">VarLvSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/VarLvSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       This context selector allows all variables and objects to have have their own context abstractions (with, e.g., different context lengths) in the most general case.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_537538141FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PartialVarSelector.java">PartialVarSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PartialVarSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_537538141FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PartialVarSelector.java">PartialVarSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PartialVarSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (10) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_117423742FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/DebloatingSelector.java">DebloatingSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/DebloatingSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_117423742FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/DebloatingSelector.java">DebloatingSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/DebloatingSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
-      This context selector is designed for <a href="https://dl.acm.org/doi/abs/10.1145/3062341.3062360">Mahjong</a> and <a href="https://doi.org/10.1109/ASE51524.2021.9678880">Context debloating technique</a> introduced in ASE'21 paper.
+      This context selector is designed for <a href="https://dl.acm.org/doi/abs/10.1145/3062341.3062360">Mahjong</a> and <a
+            href="https://doi.org/10.1109/ASE51524.2021.9678880">Context debloating technique</a> introduced in ASE'21 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1964196985FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/BeanSelector.java">BeanSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/BeanSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1964196985FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/BeanSelector.java">BeanSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/BeanSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
-      This context selector is specially designed for <a href="https://link.springer.com/chapter/10.1007/978-3-662-53413-7_24">BEAN</a>.
+      This context selector is specially designed for <a
+            href="https://link.springer.com/chapter/10.1007/978-3-662-53413-7_24">BEAN</a>.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1475286544FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PipelineSelector.java">PipelineSelector.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PipelineSelector.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1475286544FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PipelineSelector.java">PipelineSelector.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/select/PipelineSelector.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       This context selector is defined in terms of two other context selectors. See the formal definition in Section 4.4 of our ECOOP'22 paper.
     </p>
-  </span></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N68724&quot;)" id="imgN68724" /><a id="FMID_1960453114FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">Heap Abstractor</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                               onClick="toggle(&quot;N68724&quot;)" id="imgN68724"/><a
+                                id="FMID_1960453114FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">Heap
+                                Abstractor
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       A heap abstractor defines the heap abstraction for an object.
     </p>
-  </span></div><div class="content" id="N68724"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1511252923FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/AllocSiteAbstractor.java">AllocSiteAbstractor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/AllocSiteAbstractor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                            <div class="content" id="N68724">
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1511252923FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/AllocSiteAbstractor.java">AllocSiteAbstractor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/AllocSiteAbstractor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (11) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_908254535FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/HeuristicAbstractor.java">HeuristicAbstractor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/HeuristicAbstractor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_908254535FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/HeuristicAbstractor.java">HeuristicAbstractor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/HeuristicAbstractor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (12) in our ECOOP'22 paper.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1837404566FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/MahjongAbstractor.java">MahjongAbstractor.java</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/MahjongAbstractor.java"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1837404566FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;"><a
+                                            href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/MahjongAbstractor.java">MahjongAbstractor.java</a>
+                                        <a href="https://github.com/QilinPTA/Qilin/blob/main/qilin.core/src/qilin/parm/heapabst/MahjongAbstractor.java"><img
+                                                src="QilinCodeStructure.html_files/ilink.png" alt="User Link"
+                                                style="border-width:0"/></a></div>
+                                    <div class="note-and-attributes"><span class="note">
     <p>
       Equation (13) in our ECOOP'22 paper.
     </p>
-  </span></div></div></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1337934979FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/stat">PTA evaluator</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/stat"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf"/><a
+                        id="FMID_1337934979FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/stat">PTA
+                        evaluator</a> <a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.core/src/qilin/stat"><img
+                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a>
+                    </div>
+                    <div class="note-and-attributes"><span class="note">
     <p>
       Records many statistics of the pointer analysis for a given benchmark.
     </p>
-  </span></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N69017&quot;)" id="imgN69017" /><a id="FMID_1631542550FM" /><div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.pta">qilin.pta</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.pta"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                </div>
+            </div>
+        </div>
+        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                               onClick="toggle(&quot;N69017&quot;)" id="imgN69017"/><a id="FMID_1631542550FM"/>
+            <div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.pta">qilin.pta</a> <a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.pta"><img
+                    src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a></div>
+            <div class="note-and-attributes"><span class="note">
     <p>
       If you want to create your own pointer analysis, please put your code under this sub-project.
     </p>
-  </span></div><div class="content" id="N69017"><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N69075&quot;)" id="imgN69075" /><a id="FMID_204935873FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.pta/src/driver">driver</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.pta/src/driver"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="content" id="N69075"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1127153459FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">Main.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+            <div class="content" id="N69017">
+                <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                       onClick="toggle(&quot;N69075&quot;)" id="imgN69075"/><a id="FMID_204935873FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.pta/src/driver">driver</a> <a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.pta/src/driver"><img
+                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a>
+                    </div>
+                    <div class="content" id="N69075">
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1127153459FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                Main.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Qilin's command line entry class.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_168413891FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">PTAOption.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_168413891FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                PTAOption.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Qilin command line options
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1870669745FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">PTAPattern.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1870669745FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                PTAPattern.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Pointer analysis patterns, which tell Qilin which PTA to invoke.
     </p>
-  </span></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N69289&quot;)" id="imgN69289" /><a id="FMID_1258139841FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;">concrete PTAs</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                    </div>
+                </div>
+                <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                       onClick="toggle(&quot;N69289&quot;)" id="imgN69289"/><a id="FMID_1258139841FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;">concrete
+                        PTAs
+                    </div>
+                    <div class="note-and-attributes"><span class="note">
     <p>
       PTA implementations are stored under the "tools/" directory while their corresponding pre-analyses (if any) are stored under the "toolkits" directory.
     </p>
-  </span></div><div class="content" id="N69289"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_796120006FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">Spark.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                    <div class="content" id="N69289">
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_796120006FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                Spark.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       This performs the standard context-insensitive pointer analysis. The PTA pattern is "insens".
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1767122784FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">ObjectSensPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1767122784FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                ObjectSensPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       k-OBJ, the PTA pattern is "ko", k = {1, 2, 3, ...}
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1575094612FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">CallSiteSensPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1575094612FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                CallSiteSensPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       k-CFA, the PTA pattern is "kc", k = {1,2,3,...}
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_468923102FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">TypeSensPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_468923102FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                TypeSensPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       k-Type, the PTA pattern is "kt", k = {1, 2, 3, ...}
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_147211068FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">HybridObjectSensPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_147211068FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                HybridObjectSensPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Hybrid kOBJ. The PTA pattern is "kh", k = {1, 2, 3, ...}
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_30904192FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">DebloatedPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_30904192FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                DebloatedPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Context debloating for Object-sensitivity. The PTA pattern can be {ko, Z-ko, E-ko} + "-cd" respectively for debloating kOBJ, Zipper-guided kOBJ, and Eagle-guided kOBJ.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1448083641FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">TurnerPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1448083641FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                TurnerPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Turner-guided k-OBJ. The PTA pattern is "T-ko", k = {1, 2, 3, ...}
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1735121902FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">MahjongPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1735121902FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                MahjongPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Mahjong-guided context-sensitive pointer analysis. The PTA pattern can be one of {M-kc, M-ko}, k = {1, 2, 3, ...}
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_462522753FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">EaglePTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_462522753FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                EaglePTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Eagle-guided kOBJ. The PTA pattern is "E-ko", k = {1, 2, 3, ...}
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1279361768FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">ZipperPTA.java</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1561150412FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">BeanPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1279361768FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                ZipperPTA.java
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1561150412FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                BeanPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Bean-guided 2-object-sensitive pointer analysis. The PTA pattern is "B-2o".
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1745123289FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">TunnelingPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1745123289FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                TunnelingPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Context tunneling guided pointer analysis. The PTA patterns can be one of {'t-1c', t-2t, t-2o, t-2h}.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_239532551FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">DataDrivenPTA.java</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_239532551FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                DataDrivenPTA.java
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       Data-driven point.er analysis. The PTA patterns can be {D-2o, D-2c, D-2h, D-2ht}
     </p>
-  </span></div></div></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N70077&quot;)" id="imgN70077" /><a id="FMID_31840620FM" /><div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben">qilin.microben</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                               onClick="toggle(&quot;N70077&quot;)" id="imgN70077"/><a id="FMID_31840620FM"/>
+            <div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben">qilin.microben</a> <a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben"><img
+                    src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a></div>
+            <div class="note-and-attributes"><span class="note">
     <p>
       About 100 unit test cases for testing Qilin. If you want to add more unit test cases, please put your code here.
     </p>
-  </span></div><div class="content" id="N70077"><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N70135&quot;)" id="imgN70135" /><a id="FMID_1413269164FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben/src/qilin/microben/context">context sensitivity</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben/src/qilin/microben/context"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="content" id="N70135"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1035661080FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">k-CFA</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_680749913FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">k-OBJ</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_15877272FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">k-Hybrid</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_615689229FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">collections</div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1587291148FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;">flow sensitivity</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+            <div class="content" id="N70077">
+                <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                       onClick="toggle(&quot;N70135&quot;)" id="imgN70135"/><a id="FMID_1413269164FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben/src/qilin/microben/context">context
+                        sensitivity</a> <a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben/src/qilin/microben/context"><img
+                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a>
+                    </div>
+                    <div class="content" id="N70135">
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1035661080FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                k-CFA
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_680749913FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                k-OBJ
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_15877272FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                k-Hybrid
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_615689229FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                collections
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf"/><a
+                        id="FMID_1587291148FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;">flow
+                        sensitivity
+                    </div>
+                    <div class="note-and-attributes"><span class="note">
     <p>
       not supported yet by Qilin.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N70398&quot;)" id="imgN70398" /><a id="FMID_309811131FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben/src/qilin/microben/core">general test cases</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben/src/qilin/microben/core"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="content" id="N70398"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1914348410FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">array</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1326871225FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">assign</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_149783059FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">call</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1718826441FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">clinit</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_691618412FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">exception</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_193574137FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">field</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1528638747FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">global</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_586715466FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">natives</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1885535317FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">reflog</div></div></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N70810&quot;)" id="imgN70810" /><a id="FMID_1273262914FM" /><div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/artifact">artifact</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/artifact"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="content" id="N70810"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_608583388FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/artifact/qilin.py">qilin.py</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/artifact/qilin.py"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                </div>
+                <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                       onClick="toggle(&quot;N70398&quot;)" id="imgN70398"/><a id="FMID_309811131FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben/src/qilin/microben/core">general
+                        test cases</a> <a
+                            href="https://github.com/QilinPTA/Qilin/tree/main/qilin.microben/src/qilin/microben/core"><img
+                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a>
+                    </div>
+                    <div class="content" id="N70398">
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1914348410FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                array
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1326871225FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                assign
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_149783059FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                call
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1718826441FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                clinit
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_691618412FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                exception
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_193574137FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                field
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1528638747FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                global
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_586715466FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                natives
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_1885535317FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                reflog
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                               onClick="toggle(&quot;N70810&quot;)" id="imgN70810"/><a id="FMID_1273262914FM"/>
+            <div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/artifact">artifact</a> <a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/artifact"><img
+                    src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a></div>
+            <div class="content" id="N70810">
+                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf"/><a
+                        id="FMID_608583388FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a
+                            href="https://github.com/QilinPTA/Qilin/blob/main/artifact/qilin.py">qilin.py</a> <a
+                            href="https://github.com/QilinPTA/Qilin/blob/main/artifact/qilin.py"><img
+                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a>
+                    </div>
+                    <div class="note-and-attributes"><span class="note">
     <p>
       The driver script of Qilin.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_463876181FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a href="https://github.com/QilinPTA/Qilin/blob/main/artifact/run.py">run.py</a> <a href="https://github.com/QilinPTA/Qilin/blob/main/artifact/run.py"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                </div>
+                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf"/><a
+                        id="FMID_463876181FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a
+                            href="https://github.com/QilinPTA/Qilin/blob/main/artifact/run.py">run.py</a> <a
+                            href="https://github.com/QilinPTA/Qilin/blob/main/artifact/run.py"><img
+                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a>
+                    </div>
+                    <div class="note-and-attributes"><span class="note">
     <p>
       The driver script for using Qilin to analyse benchmarks.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_519723870FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;">Qilin-version-SNAPSHOT.jar</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                </div>
+                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf"/><a
+                        id="FMID_519723870FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;">
+                        Qilin-version-SNAPSHOT.jar
+                    </div>
+                    <div class="note-and-attributes"><span class="note">
     <p>
       The Qilin package with dependencies. It is compiled by JDK16+ and thus requires a recent JDK to run.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N71026&quot;)" id="imgN71026" /><a id="FMID_1963330790FM" /><div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a href="https://github.com/QilinPTA/benchmarks">benchmarks</a> <a href="https://github.com/QilinPTA/benchmarks"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="content" id="N71026"><div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide" onClick="toggle(&quot;N71067&quot;)" id="imgN71067" /><a id="FMID_1900225967FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">JREs</div><div class="content" id="N71067"><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1398133851FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;">jre1.6.0_45</div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_617881107FM" /><div class="nodecontent" style="color:#2e3440;background-color:#b48ead;font-size:92%;">jre1.8.0_312</div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_78619906FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">dacapo2006</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                </div>
+                <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                       onClick="toggle(&quot;N71026&quot;)" id="imgN71026"/><a id="FMID_1963330790FM"/>
+                    <div class="nodecontent" style="color:#3b4252;background-color:#ebcb8b;font-size:117%;"><a
+                            href="https://github.com/QilinPTA/benchmarks">benchmarks</a> <a
+                            href="https://github.com/QilinPTA/benchmarks"><img
+                            src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a>
+                    </div>
+                    <div class="content" id="N71026">
+                        <div class="node"><img src="QilinCodeStructure.html_files/hide.png" class="hideshow" alt="hide"
+                                               onClick="toggle(&quot;N71067&quot;)" id="imgN71067"/><a
+                                id="FMID_1900225967FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                JREs
+                            </div>
+                            <div class="content" id="N71067">
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_1398133851FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;">jre1.6.0_45
+                                    </div>
+                                </div>
+                                <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                                       alt="leaf"/><a id="FMID_617881107FM"/>
+                                    <div class="nodecontent"
+                                         style="color:#2e3440;background-color:#b48ead;font-size:92%;">jre1.8.0_312
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_78619906FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                dacapo2006
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       The old version of DaCaPo benchmarks from the artifact of Mahjong. It should be used together with jre1.6.0_45.
     </p>
-  </span></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_247066141FM" /><div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">dacapo2018</div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow"
+                                               alt="leaf"/><a id="FMID_247066141FM"/>
+                            <div class="nodecontent" style="color:#2e3440;background-color:#a3be8c;font-size:100%;">
+                                dacapo2018
+                            </div>
+                            <div class="note-and-attributes"><span class="note">
     <p>
       The latest version of DaCapo (revision 6cf0380) compiled by us. This set of benchmarks should work together with jre1.8.0_312.
     </p>
-  </span></div></div></div></div></div></div><div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf" /><a id="FMID_1394854654FM" /><div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.util">qilin.util</a> <a href="https://github.com/QilinPTA/Qilin/tree/main/qilin.util"><img src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0" /></a></div><div class="note-and-attributes"><span class="note">
+  </span></div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+        <div class="node"><img src="QilinCodeStructure.html_files/leaf.png" class="hideshow" alt="leaf"/><a
+                id="FMID_1394854654FM"/>
+            <div class="nodecontent" style="color:#eceff4;background-color:#d08770;font-size:133%;"><a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.util">qilin.util</a> <a
+                    href="https://github.com/QilinPTA/Qilin/tree/main/qilin.util"><img
+                    src="QilinCodeStructure.html_files/ilink.png" alt="User Link" style="border-width:0"/></a></div>
+            <div class="note-and-attributes"><span class="note">
     <p>
       This subproject includes a set of utility classes.
     </p>
-  </span></div></div></div></div>
-</body></html>
\ No newline at end of file
+  </span></div>
+        </div>
+    </div>
+</div>
+</body>
+</html>
\ No newline at end of file
diff --git a/docs/example/example01/src/Main.java b/docs/example/example01/src/Main.java
index 86491c0..92c0022 100644
--- a/docs/example/example01/src/Main.java
+++ b/docs/example/example01/src/Main.java
@@ -1,34 +1,38 @@
-
 class Main {
-  public static void main(String[] args) {
-    C c1 = new C(); // C1
-    C c2 = c1;
-    A a1 = c1.wcreate2(); // c1
-    A a2 = c2.wcreate2(); // c2
-    Object o1 = new Object(); // O1
-    Object o2 = new Object(); // O2
-    a1.f = o1;
-    a2.f = o2;
-    Object v1 = a1.f;
-    Object v2 = a2.f; 
-  }
+    public static void main(String[] args) {
+        C c1 = new C(); // C1
+        C c2 = c1;
+        A a1 = c1.wcreate2(); // c1
+        A a2 = c2.wcreate2(); // c2
+        Object o1 = new Object(); // O1
+        Object o2 = new Object(); // O2
+        a1.f = o1;
+        a2.f = o2;
+        Object v1 = a1.f;
+        Object v2 = a2.f;
+    }
+}
+
+class A {
+    Object f;
 }
 
-class A { Object f; }
 class B {
-  A create() {
-    A r1 = new A(); // A1
-    return r1; 
-  }
-  A wcreate() {
-    A r2 = this.create(); // c4
-    return r2;
-  }
+    A create() {
+        A r1 = new A(); // A1
+        return r1;
+    }
+
+    A wcreate() {
+        A r2 = this.create(); // c4
+        return r2;
+    }
 }
+
 class C {
-  A wcreate2() {
-    B b1 = new B(); // B1
-    A r3 = b1.wcreate(); // c3
-    return r3;
-  }
+    A wcreate2() {
+        B b1 = new B(); // B1
+        A r3 = b1.wcreate(); // c3
+        return r3;
+    }
 }
\ No newline at end of file
diff --git a/docs/index.html b/docs/index.html
index 7271a93..825c0b6 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -2,7 +2,7 @@
 <html lang="en-us">
 <head>
     <meta charset="UTF-8">
-    <title>Qilin: Java Pointer Analysis with Fine-Grained Context Sensitivity  </title>
+    <title>Qilin: Java Pointer Analysis with Fine-Grained Context Sensitivity </title>
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <link rel="stylesheet" type="text/css" href="stylesheets/normalize.css" media="screen">
     <link href='http://fonts.googleapis.com/css?family=Open+Sans:400,700' rel='stylesheet' type='text/css'>
@@ -13,18 +13,22 @@
     new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
     j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
     'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
-    })(window,document,'script','dataLayer','GTM-WV6GXX4');</script>
+    })(window,document,'script','dataLayer','GTM-WV6GXX4');
+    </script>
     <!-- End Google Tag Manager -->
 </head>
 <body>
 <!-- Google Tag Manager (noscript) -->
-<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-WV6GXX4"
-height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+<noscript>
+    <iframe src="https://www.googletagmanager.com/ns.html?id=GTM-WV6GXX4"
+            height="0" width="0" style="display:none;visibility:hidden"></iframe>
+</noscript>
 <!-- End Google Tag Manager (noscript) -->
-    
+
 <section class="page-header">
     <h1 class="project-name">Qilin</h1>
-    <h2 class="project-tagline">A New Framework for Supporting Fine-Grained Context-Sensitivity in Java Pointer Analysis</h2>
+    <h2 class="project-tagline">A New Framework for Supporting Fine-Grained Context-Sensitivity in Java Pointer
+        Analysis</h2>
     <a href="https://github.com//QilinPTA/Qilin/wiki" class="btn">View Wiki on GitHub</a>
     <a href="https://github.com/QilinPTA/Qilin/" class="btn" id="qilindownload">Download Source Code </a>
     <a href="https://github.com//QilinPTA/Qilin/wiki/Try-Qilin-in-Docker" class="btn">Download Docker Image</a>
@@ -33,98 +37,142 @@ <h2 class="project-tagline">A New Framework for Supporting Fine-Grained Context-
 
 <section class="main-content">
     <h2>
-        <a id="what-is-qilin" class="anchor" href="#what-is-qilin" aria-hidden="true"><span class="octicon octicon-link"></span></a>What is Qilin?</h2>
+        <a id="what-is-qilin" class="anchor" href="#what-is-qilin" aria-hidden="true"><span
+                class="octicon octicon-link"></span></a>What is Qilin?</h2>
+
+    <p>Qilin is a new pointer (or alias) analysis framework designed for supporting fine-grained context-sensitivity
+        for Java programs precisely, efficiently, and modularly.
+        Qilin enables different variables/objects in a method to be analysed under different context abstractions at the
+        variable level, by supporting naturally the traditional
+        method-level context-sensitivity as a special case. </p>
+
+    For a pointer analysis framework that works for C and C++, we refer to
+    <a href="https://svf-tools.github.io/SVF/">SVF</a>.
 
-    <p>Qilin is a new pointer (or alias) analysis framework designed for supporting fine-grained context-sensitivity 
-        for Java programs precisely, efficiently, and modularly. 
-        Qilin enables different variables/objects in a method to be analysed under different context abstractions at the variable level, by supporting naturally the traditional 
-        method-level context-sensitivity   as a special case. </p>
-    
-    For a pointer analysis framework that works for C and C++, we refer to 
-    <a href="https://svf-tools.github.io/SVF/">SVF</a>. 
-    
 
     <h2>
-        <a id="what-kind-of-analyses-does-qilin-provide" class="anchor" href="#what-kind-of-analyses-does-qilin-provide" aria-hidden="true"><span class="octicon octicon-link"></span></a>What kind of analyses does Qilin provide?</h2>
-        Qilin's toolbox includes already a rich set of pointer analyses for supporting (1) <a href="https://link.springer.com/chapter/10.1007/3-540-36579-6_12"> <em>insens</em> </a> (Andersen's context-insensitive analysis), 
+        <a id="what-kind-of-analyses-does-qilin-provide" class="anchor" href="#what-kind-of-analyses-does-qilin-provide"
+           aria-hidden="true"><span class="octicon octicon-link"></span></a>What kind of analyses does Qilin provide?
+    </h2>
+    Qilin's toolbox includes already a rich set of pointer analyses for supporting (1) <a
+        href="https://link.springer.com/chapter/10.1007/3-540-36579-6_12"> <em>insens</em> </a> (Andersen's
+    context-insensitive analysis),
     (2) all common flavors of method-level context-sensitivity as listed below:
     <ul>
-      <li>
-        <a href="https://www.cse.psu.edu/~trj1/cse598-f11/docs/sharir_pnueli1.pdf"><em>k</em>c</a>: <em>k</em>-callsite-sensitive pointer analysis (<em>k</em>CFA).
-      </li>
-      <li>
-        <a href="https://dl.acm.org/doi/abs/10.1145/1044834.1044835"><em>k</em>o</a>: <em>k</em>-object-sensitive pointer analysis (<em>k</em>OBJ).
-      </li>
-      <li>
-        <a href="https://dl.acm.org/doi/abs/10.1145/1926385.1926390"><em>k</em>t</a>: <em>k</em>-type-sensitive pointer analysis (<em>k</em>TYPE).
-      </li>
-      <li>
-        <a href="https://dl.acm.org/doi/10.1145/2499370.2462191"><em>k</em>h</a>: hybrid <em>k</em>-object-sensitive pointer analysis.
-      </li>
+        <li>
+            <a href="https://www.cse.psu.edu/~trj1/cse598-f11/docs/sharir_pnueli1.pdf"><em>k</em>c</a>: <em>k</em>-callsite-sensitive
+            pointer analysis (<em>k</em>CFA).
+        </li>
+        <li>
+            <a href="https://dl.acm.org/doi/abs/10.1145/1044834.1044835"><em>k</em>o</a>: <em>k</em>-object-sensitive
+            pointer analysis (<em>k</em>OBJ).
+        </li>
+        <li>
+            <a href="https://dl.acm.org/doi/abs/10.1145/1926385.1926390"><em>k</em>t</a>: <em>k</em>-type-sensitive
+            pointer analysis (<em>k</em>TYPE).
+        </li>
+        <li>
+            <a href="https://dl.acm.org/doi/10.1145/2499370.2462191"><em>k</em>h</a>: hybrid <em>k</em>-object-sensitive
+            pointer analysis.
+        </li>
     </ul>
-    and (3) many flavors of fine-grained context-sensitivity, enabled by different pre-analyses such as: 
+    and (3) many flavors of fine-grained context-sensitivity, enabled by different pre-analyses such as:
     <ul>
-      <li>
-        <a href="https://link.springer.com/chapter/10.1007/978-3-662-53413-7_24">B-2o</a>: BEAN-guided <em>2</em>-object-sensitive pointer analysis.
-      </li>
-      <li>
-        <a href="https://dl.acm.org/doi/10.1145/3133924">D-2o</a>: Data-driven <em>2</em>-object-sensitive pointer analysis.
-      </li>    
-      <li>
-        <a href="https://doi.org/10.1145/3062341.3062360">M-<em>k</em>o</a>: MAHJONG-guided <em>k</em>-object-sensitive pointer analysis.
-      </li>
-      <li>
-        <a href="https://doi.org/10.1145/3360574">E-<em>k</em>o</a>: EAGLE-guided <em>k</em>-object-sensitive pointer analysis.
-      </li>
-      <li>
-        <a href="https://drops.dagstuhl.de/opus/volltexte/2021/14059">T-<em>k</em>o</a>: TURNER-guided <em>k</em>-object-sensitive pointer analysis.
-      </li>
+        <li>
+            <a href="https://link.springer.com/chapter/10.1007/978-3-662-53413-7_24">B-2o</a>: BEAN-guided <em>2</em>-object-sensitive
+            pointer analysis.
+        </li>
+        <li>
+            <a href="https://dl.acm.org/doi/10.1145/3133924">D-2o</a>: Data-driven <em>2</em>-object-sensitive pointer
+            analysis.
+        </li>
+        <li>
+            <a href="https://doi.org/10.1145/3062341.3062360">M-<em>k</em>o</a>: MAHJONG-guided <em>k</em>-object-sensitive
+            pointer analysis.
+        </li>
+        <li>
+            <a href="https://doi.org/10.1145/3360574">E-<em>k</em>o</a>: EAGLE-guided <em>k</em>-object-sensitive
+            pointer analysis.
+        </li>
+        <li>
+            <a href="https://drops.dagstuhl.de/opus/volltexte/2021/14059">T-<em>k</em>o</a>: TURNER-guided <em>k</em>-object-sensitive
+            pointer analysis.
+        </li>
     </ul>
-            A full list of pointer analyses that are currently supported by Qilin can be found <a href="https://github.com/QilinPTA/Qilin/wiki/Full-list-of-PTAs">here</a>.
-            
-    <p> In addition,  Qilin can also be used to <a href="https://github.com/QilinPTA/Qilin/wiki/Analyse-a-Simple-Java-Program#dump-the-callgraph"> construct callgraphs </a> for Java programs.</p>
-            
-  <p> Finally,  Qilin can be easily extended to handle  Android applications.  Work is underway ... </p>
+    A full list of pointer analyses that are currently supported by Qilin can be found <a
+        href="https://github.com/QilinPTA/Qilin/wiki/Full-list-of-PTAs">here</a>.
+
+    <p> In addition, Qilin can also be used to <a
+            href="https://github.com/QilinPTA/Qilin/wiki/Analyse-a-Simple-Java-Program#dump-the-callgraph"> construct
+        callgraphs </a> for Java programs.</p>
+
+    <p> Finally, Qilin can be easily extended to handle Android applications. Work is underway ... </p>
 
     <h2>
-        <a id="how-to-setup-qilin" class="anchor" href="#how-to-setup-qilin" aria-hidden="true"><span class="octicon octicon-link">
+        <a id="how-to-setup-qilin" class="anchor" href="#how-to-setup-qilin" aria-hidden="true"><span
+                class="octicon octicon-link">
             </span></a>How to setup Qilin?</h2>
 
-    <p>Please download the <a href="https://github.com/QilinPTA/Qilin" id="qilindownload">source code</a> of Qilin and refer to this 
-        <a href="https://github.com/QilinPTA/Qilin/wiki/Setup-Guide#getting-started"> step-by-step guide</a> to setup Qilin.</p>
+    <p>Please download the <a href="https://github.com/QilinPTA/Qilin" id="qilindownload">source code</a> of Qilin and
+        refer to this
+        <a href="https://github.com/QilinPTA/Qilin/wiki/Setup-Guide#getting-started"> step-by-step guide</a> to setup
+        Qilin.</p>
 
     <h2>
-        <a id="how-to-run-qilin" class="anchor" href="#how-to-run-qilin" aria-hidden="true"><span class="octicon octicon-link"></span></a>How to run Qilin?</h2>
+        <a id="how-to-run-qilin" class="anchor" href="#how-to-run-qilin" aria-hidden="true"><span
+                class="octicon octicon-link"></span></a>How to run Qilin?</h2>
 
-    <p>Qilin analyses a Java program by taking its class files or Jar files as input. Please refer to 
-        <a href="https://github.com/QilinPTA/Qilin/wiki/User-Guide#quick-start">this user guide</a> to run Qilin with 
-        <a href="https://github.com/QilinPTA/Qilin/wiki/Analyse-a-Simple-Java-Program#an-example">a simple example</a> 
-        and generate the <a href="https://github.com/QilinPTA/Qilin/wiki/User-Guide#analysis-outputs">analysis outputs</a> on your local machine.</p>
+    <p>Qilin analyses a Java program by taking its class files or Jar files as input. Please refer to
+        <a href="https://github.com/QilinPTA/Qilin/wiki/User-Guide#quick-start">this user guide</a> to run Qilin with
+        <a href="https://github.com/QilinPTA/Qilin/wiki/Analyse-a-Simple-Java-Program#an-example">a simple example</a>
+        and generate the <a href="https://github.com/QilinPTA/Qilin/wiki/User-Guide#analysis-outputs">analysis
+            outputs</a> on your local machine.</p>
 
-    <p>Alternatively, we have also prepared a <a href="https://hub.docker.com/r/hdjay2013/qilin">docker image</a> for you to run Qilin on any machine with 
-        <a href="https://www.docker.com/get-started">Docker</a> installed. Please refer to this 
-        <a href="https://github.com/QilinPTA/Qilin/wiki/Try-Qilin-in-Docker"> step-by-step guide</a> to try Qilin in a Docker container. </p>
+    <p>Alternatively, we have also prepared a <a href="https://hub.docker.com/r/hdjay2013/qilin">docker image</a> for
+        you to run Qilin on any machine with
+        <a href="https://www.docker.com/get-started">Docker</a> installed. Please refer to this
+        <a href="https://github.com/QilinPTA/Qilin/wiki/Try-Qilin-in-Docker"> step-by-step guide</a> to try Qilin in a
+        Docker container. </p>
 
     <h2>
         <a id="how-does-qilin-work-internally" class="anchor" href="#how-does-qilin-work-internally" aria-hidden="true">
             <span class="octicon octicon-link"></span></a>References</h2>
 
-    <p>Please refer to <a href="QilinCodeStructure.html">this documentation</a> 
+    <p>Please refer to <a href="QilinCodeStructure.html">this documentation</a>
         and our ECOOP'22 paper to understand the internal working of Qilin.</p>
-            
-    <p>You are welcome to use Qilin for research and development purposes under the license given. However, we would request you to kindly 
+
+    <p>You are welcome to use Qilin for research and development purposes under the license given. However, we would
+        request you to kindly
         cite our ECOOP'22 paper, and possibly other relevant papers also listed below. </p>
-    <p>Dongjie He, Yujiang Gui, Wei Li, Yonggang Tao, Chaiwei Zou, Yulei Sui, and Jingling Xue. <a href ="https://doi.org/10.1145/3622832">A Container-Usage-Pattern-Based Context Debloating Approach for Object-Sensitive Pointer Analysis</a>, ACM SIGPLAN Conference on Object-Oriented Programming, Systems, Languages, and Applications (OOPSLA'23)</p>
-    <p>Dongjie He, Jingbo Lu, and Jingling Xue. <a href="https://doi.org/10.1145/3579641">IFDS-based Context Debloating for Object-Sensitive Pointer Analysis</a>,  ACM Transactions on Software Engineering and Methodology (TOSEM 2023)</p>
-    <p>Dongjie He, Jingbo Lu, and Jingling Xue. <a href ="https://doi.org/10.4230/LIPIcs.ECOOP.2022.30">Qilin: A New Framework for Supporting Fine-Grained Context-Sensitivity in Java Pointer Analysis</a>, 36th European Conference on Object-Oriented Programming (ECOOP'22)</p>
-    <p>Dongjie He, Jingbo Lu, Yaoqing Gao, and Jingling Xue. <a href ="https://doi.org/10.1109/TSE.2022.3162236">Selecting Context-Sensitivity Modularly for Accelerating Object-Sensitive Pointer Analysis</a>, IEEE Transactions on Software Engineering (TSE'22)</p>
-    <p>Dongjie He, Jingbo Lu, and Jingling Xue. <a href ="https://doi.org/10.1109/ASE51524.2021.9678880">Context Debloating for Object-Sensitive Pointer Analysis</a>, 36th IEEE/ACM International Conference on Automated Software Engineering (ASE'21)</p>
-    <p>Dongjie He, Jingbo Lu, Yaoqing Gao, and Jingling Xue. <a href ="https://doi.org/10.4230/LIPIcs.ECOOP.2021.16">Accelerating Object-Sensitive Pointer Analysis by Exploiting Object Containment and Reachability</a>, 35th European Conference on Object-Oriented Programming (ECOOP'21)</p>
-    <p>Jingbo Lu, Dongjie He,  and Jingling Xue. <a href ="https://doi.org/10.1145/3450492">Eagle: CFL-Reachability-based Precision-Preserving Acceleration of Object-Sensitive Pointer Analysis</a>, ACM Transactions on Software Engineering and Methodology (TOSEM 2021)</p> 
-    <p>Jingbo Lu and Jingling Xue. <a href="https://doi.org/10.1145/3360574">Precision-Preserving Yet Fast Object-Sensitive Pointer Analysis with Partial Context Sensitivity</a>. ACM SIGPLAN Conference on Object-Oriented Programming, Systems, Languages, and Applications (OOPSLA'19) </p>
-    
+    <p>Dongjie He, Yujiang Gui, Wei Li, Yonggang Tao, Chaiwei Zou, Yulei Sui, and Jingling Xue. <a
+            href="https://doi.org/10.1145/3622832">A Container-Usage-Pattern-Based Context Debloating Approach for
+        Object-Sensitive Pointer Analysis</a>, ACM SIGPLAN Conference on Object-Oriented Programming, Systems,
+        Languages, and Applications (OOPSLA'23)</p>
+    <p>Dongjie He, Jingbo Lu, and Jingling Xue. <a href="https://doi.org/10.1145/3579641">IFDS-based Context Debloating
+        for Object-Sensitive Pointer Analysis</a>, ACM Transactions on Software Engineering and Methodology (TOSEM 2023)
+    </p>
+    <p>Dongjie He, Jingbo Lu, and Jingling Xue. <a href="https://doi.org/10.4230/LIPIcs.ECOOP.2022.30">Qilin: A New
+        Framework for Supporting Fine-Grained Context-Sensitivity in Java Pointer Analysis</a>, 36th European Conference
+        on Object-Oriented Programming (ECOOP'22)</p>
+    <p>Dongjie He, Jingbo Lu, Yaoqing Gao, and Jingling Xue. <a href="https://doi.org/10.1109/TSE.2022.3162236">Selecting
+        Context-Sensitivity Modularly for Accelerating Object-Sensitive Pointer Analysis</a>, IEEE Transactions on
+        Software Engineering (TSE'22)</p>
+    <p>Dongjie He, Jingbo Lu, and Jingling Xue. <a href="https://doi.org/10.1109/ASE51524.2021.9678880">Context
+        Debloating for Object-Sensitive Pointer Analysis</a>, 36th IEEE/ACM International Conference on Automated
+        Software Engineering (ASE'21)</p>
+    <p>Dongjie He, Jingbo Lu, Yaoqing Gao, and Jingling Xue. <a href="https://doi.org/10.4230/LIPIcs.ECOOP.2021.16">Accelerating
+        Object-Sensitive Pointer Analysis by Exploiting Object Containment and Reachability</a>, 35th European
+        Conference on Object-Oriented Programming (ECOOP'21)</p>
+    <p>Jingbo Lu, Dongjie He, and Jingling Xue. <a href="https://doi.org/10.1145/3450492">Eagle: CFL-Reachability-based
+        Precision-Preserving Acceleration of Object-Sensitive Pointer Analysis</a>, ACM Transactions on Software
+        Engineering and Methodology (TOSEM 2021)</p>
+    <p>Jingbo Lu and Jingling Xue. <a href="https://doi.org/10.1145/3360574">Precision-Preserving Yet Fast
+        Object-Sensitive Pointer Analysis with Partial Context Sensitivity</a>. ACM SIGPLAN Conference on
+        Object-Oriented Programming, Systems, Languages, and Applications (OOPSLA'19) </p>
+
     <h2>
-        <a id="qilin-released-license" class="anchor" href="#qilin-released-license" aria-hidden="true"><span class="octicon octicon-link"></span></a>License </h2>
+        <a id="qilin-released-license" class="anchor" href="#qilin-released-license" aria-hidden="true"><span
+                class="octicon octicon-link"></span></a>License </h2>
 
     GPL v2.1
 
diff --git a/qilin.core/build.gradle b/qilin.core/build.gradle
index 9f27be5..cbe4e2f 100644
--- a/qilin.core/build.gradle
+++ b/qilin.core/build.gradle
@@ -12,10 +12,10 @@ repositories {
 
 dependencies {
     // api files("${rootDir}/libs/sootclasses-4.4.0-jar-with-dependencies.jar")
-    implementation("org.soot-oss:soot:4.4.0")
+    implementation("org.soot-oss:soot:4.5.0")
     implementation("de.upb.cs.swt:axml:2.1.1")
     implementation("de.upb.cs.swt:heros:1.2.3")
     implementation("ca.mcgill.sable:jasmin:3.0.3")
-    api (project(':qilin.util'))
+    api(project(':qilin.util'))
 }
 
diff --git a/qilin.core/src/qilin/core/ArtificialMethod.java b/qilin.core/src/qilin/core/ArtificialMethod.java
index a0c558f..1312b5b 100644
--- a/qilin.core/src/qilin/core/ArtificialMethod.java
+++ b/qilin.core/src/qilin/core/ArtificialMethod.java
@@ -18,12 +18,29 @@
 
 package qilin.core;
 
-import soot.*;
+import soot.ArrayType;
+import soot.Body;
+import soot.Local;
+import soot.RefType;
+import soot.SootMethod;
+import soot.SootMethodRef;
+import soot.Type;
+import soot.Value;
 import soot.jimple.IntConstant;
 import soot.jimple.Jimple;
 import soot.jimple.ParameterRef;
 import soot.jimple.ThisRef;
-import soot.jimple.internal.*;
+import soot.jimple.internal.JArrayRef;
+import soot.jimple.internal.JAssignStmt;
+import soot.jimple.internal.JIdentityStmt;
+import soot.jimple.internal.JInterfaceInvokeExpr;
+import soot.jimple.internal.JInvokeStmt;
+import soot.jimple.internal.JNewArrayExpr;
+import soot.jimple.internal.JNewExpr;
+import soot.jimple.internal.JReturnStmt;
+import soot.jimple.internal.JStaticInvokeExpr;
+import soot.jimple.internal.JVirtualInvokeExpr;
+import soot.jimple.internal.JimpleLocal;
 
 import java.util.Arrays;
 import java.util.List;
diff --git a/qilin.core/src/qilin/core/CorePTA.java b/qilin.core/src/qilin/core/CorePTA.java
index fc2abd4..70f33cc 100644
--- a/qilin.core/src/qilin/core/CorePTA.java
+++ b/qilin.core/src/qilin/core/CorePTA.java
@@ -18,12 +18,24 @@
 
 package qilin.core;
 
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.CallSite;
+import qilin.core.pag.ContextAllocNode;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.ContextVarNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.FieldValNode;
+import qilin.core.pag.GlobalVarNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.Node;
+import qilin.core.pag.VarNode;
 import qilin.core.solver.Propagator;
 import qilin.parm.ctxcons.CtxConstructor;
 import qilin.parm.heapabst.HeapAbstractor;
 import qilin.parm.select.CtxSelector;
-import soot.*;
+import soot.Context;
+import soot.MethodOrMethodContext;
+import soot.SootMethod;
 
 /*
  * This represents a parameterized PTA which could be concreted to many pointer analyses.
diff --git a/qilin.core/src/qilin/core/PTA.java b/qilin.core/src/qilin/core/PTA.java
index 564e3a4..b7ebede 100644
--- a/qilin.core/src/qilin/core/PTA.java
+++ b/qilin.core/src/qilin/core/PTA.java
@@ -20,14 +20,29 @@
 
 import qilin.core.builder.CallGraphBuilder;
 import qilin.core.builder.ExceptionHandler;
-import qilin.core.pag.*;
-import qilin.core.sets.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ArrayElement;
+import qilin.core.pag.CallSite;
+import qilin.core.pag.ContextAllocNode;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.ContextVarNode;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.VarNode;
+import qilin.core.sets.HybridPointsToSet;
 import qilin.core.sets.PointsToSet;
+import qilin.core.sets.PointsToSetInternal;
+import qilin.core.sets.UnmodifiablePointsToSet;
 import qilin.core.solver.Propagator;
 import qilin.parm.ctxcons.CtxConstructor;
 import qilin.parm.heapabst.HeapAbstractor;
 import qilin.parm.select.CtxSelector;
-import soot.*;
+import soot.Context;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.RefType;
+import soot.SootField;
+import soot.SootMethod;
 import soot.jimple.spark.pag.SparkField;
 import soot.jimple.toolkits.callgraph.CallGraph;
 
@@ -192,7 +207,7 @@ public PointsToSet reachingObjects(PointsToSet s, final SootField f) {
         if (f.isStatic()) {
             throw new RuntimeException("The parameter f must be an *instance* field.");
         }
-        return reachingObjectsInternal(s, new Field(f));
+        return reachingObjectsInternal(s, f);
     }
 
     /**
@@ -216,9 +231,8 @@ public PointsToSet reachingObjects(SootField f) {
             }
         } else {
             ret = new HybridPointsToSet();
-            SparkField sparkField = new Field(f);
-            pag.getContextFieldVarNodeMap().values().stream().filter(map -> map.containsKey(sparkField)).forEach(map -> {
-                ContextField contextField = map.get(sparkField);
+            pag.getContextFieldVarNodeMap().values().stream().filter(map -> map.containsKey(f)).forEach(map -> {
+                ContextField contextField = map.get(f);
                 ret.addAll(contextField.getP2Set(), null);
             });
         }
diff --git a/qilin.core/src/qilin/core/PTAScene.java b/qilin.core/src/qilin/core/PTAScene.java
index 2becfa9..e48707f 100644
--- a/qilin.core/src/qilin/core/PTAScene.java
+++ b/qilin.core/src/qilin/core/PTAScene.java
@@ -20,8 +20,19 @@
 
 import qilin.core.builder.FakeMainFactory;
 import qilin.util.DataFactory;
-import soot.*;
+import soot.FastHierarchy;
+import soot.G;
+import soot.Local;
+import soot.RefType;
+import soot.Scene;
+import soot.SootClass;
+import soot.SootField;
+import soot.SootMethod;
+import soot.SourceLocator;
+import soot.Type;
+import soot.Value;
 import soot.jimple.toolkits.callgraph.CallGraph;
+import soot.util.ArrayNumberer;
 import soot.util.Chain;
 import soot.util.IterableNumberer;
 import soot.util.StringNumberer;
@@ -64,6 +75,9 @@ private PTAScene() {
     public final Set<SootMethod> reflectionBuilt = DataFactory.createSet();
     public final Set<SootMethod> arraycopyBuilt = DataFactory.createSet();
 
+    protected Set<SootMethod> allMethods = DataFactory.createSet();
+    protected IterableNumberer<Local> localNumberer = new ArrayNumberer<>();
+
     /*
      * wrapper methods for FakeMain.
      * */
@@ -96,11 +110,7 @@ public CallGraph getCallGraph() {
     }
 
     public IterableNumberer<Local> getLocalNumberer() {
-        return sootScene.getLocalNumberer();
-    }
-
-    public IterableNumberer<Type> getTypeNumberer() {
-        return sootScene.getTypeNumberer();
+        return localNumberer;
     }
 
     public FastHierarchy getOrMakeFastHierarchy() {
@@ -167,8 +177,8 @@ public StringNumberer getSubSigNumberer() {
         return sootScene.getSubSigNumberer();
     }
 
-    public IterableNumberer<SootMethod> getMethodNumberer() {
-        return sootScene.getMethodNumberer();
+    public Set<SootMethod> getAllMethods() {
+        return allMethods;
     }
 
     public void loadNecessaryClasses() {
diff --git a/qilin.core/src/qilin/core/VirtualCalls.java b/qilin.core/src/qilin/core/VirtualCalls.java
index fbdcf21..50a52f0 100644
--- a/qilin.core/src/qilin/core/VirtualCalls.java
+++ b/qilin.core/src/qilin/core/VirtualCalls.java
@@ -19,9 +19,16 @@
 package qilin.core;
 
 import qilin.util.DataFactory;
-import soot.*;
+import soot.AnySubType;
+import soot.ArrayType;
+import soot.NullType;
+import soot.RefType;
+import soot.Scene;
+import soot.SootClass;
+import soot.SootMethod;
+import soot.Type;
 import soot.jimple.SpecialInvokeExpr;
-import soot.util.*;
+import soot.util.NumberedString;
 import soot.util.queue.ChunkedQueue;
 
 import java.util.HashSet;
diff --git a/qilin.core/src/qilin/core/builder/CallGraphBuilder.java b/qilin.core/src/qilin/core/builder/CallGraphBuilder.java
index b866ac1..b99a0e0 100644
--- a/qilin.core/src/qilin/core/builder/CallGraphBuilder.java
+++ b/qilin.core/src/qilin/core/builder/CallGraphBuilder.java
@@ -21,13 +21,33 @@
 import qilin.CoreConfig;
 import qilin.core.PTA;
 import qilin.core.PTAScene;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.CallSite;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.VarNode;
+import qilin.core.pag.VirtualCallSite;
 import qilin.core.sets.P2SetVisitor;
 import qilin.core.sets.PointsToSetInternal;
 import qilin.util.DataFactory;
 import qilin.util.PTAUtils;
-import soot.*;
-import soot.jimple.*;
+import soot.Context;
+import soot.Kind;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.RefLikeType;
+import soot.Scene;
+import soot.SootMethod;
+import soot.Type;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.AssignStmt;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.SpecialInvokeExpr;
+import soot.jimple.Stmt;
 import soot.jimple.internal.JInvokeStmt;
 import soot.jimple.internal.JStaticInvokeExpr;
 import soot.jimple.toolkits.callgraph.CallGraph;
@@ -35,7 +55,11 @@
 import soot.util.queue.ChunkedQueue;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 public class CallGraphBuilder {
     protected final Map<VarNode, Collection<VirtualCallSite>> receiverToSites;
diff --git a/qilin.core/src/qilin/core/builder/ExceptionHandler.java b/qilin.core/src/qilin/core/builder/ExceptionHandler.java
index 9bd3d76..a99db8e 100644
--- a/qilin.core/src/qilin/core/builder/ExceptionHandler.java
+++ b/qilin.core/src/qilin/core/builder/ExceptionHandler.java
@@ -20,14 +20,28 @@
 
 import qilin.core.PTA;
 import qilin.core.PTAScene;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ContextVarNode;
+import qilin.core.pag.ExceptionThrowSite;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.VarNode;
 import qilin.core.sets.P2SetVisitor;
 import qilin.core.sets.PointsToSetInternal;
 import qilin.util.DataFactory;
-import soot.*;
+import soot.Context;
+import soot.MethodOrMethodContext;
+import soot.SootMethod;
+import soot.Trap;
+import soot.Type;
+import soot.Unit;
 import soot.jimple.IdentityStmt;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
 
 public class ExceptionHandler {
     protected final Map<Node, Collection<ExceptionThrowSite>> throwNodeToSites = DataFactory.createMap(PTAScene.v().getLocalNumberer().size());
diff --git a/qilin.core/src/qilin/core/builder/FakeMainFactory.java b/qilin.core/src/qilin/core/builder/FakeMainFactory.java
index 5334c6e..e507d92 100644
--- a/qilin.core/src/qilin/core/builder/FakeMainFactory.java
+++ b/qilin.core/src/qilin/core/builder/FakeMainFactory.java
@@ -21,7 +21,14 @@
 import qilin.CoreConfig;
 import qilin.core.ArtificialMethod;
 import qilin.util.PTAUtils;
-import soot.*;
+import soot.EntryPoints;
+import soot.Modifier;
+import soot.RefType;
+import soot.SootClass;
+import soot.SootField;
+import soot.SootMethod;
+import soot.Value;
+import soot.VoidType;
 import soot.jimple.JimpleBody;
 
 import java.util.ArrayList;
diff --git a/qilin.core/src/qilin/core/builder/MethodNodeFactory.java b/qilin.core/src/qilin/core/builder/MethodNodeFactory.java
index edecc34..15353df 100644
--- a/qilin.core/src/qilin/core/builder/MethodNodeFactory.java
+++ b/qilin.core/src/qilin/core/builder/MethodNodeFactory.java
@@ -21,11 +21,49 @@
 import qilin.CoreConfig;
 import qilin.core.PTAScene;
 import qilin.core.PointsToAnalysis;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ArrayElement;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.Parm;
+import qilin.core.pag.VarNode;
 import qilin.util.PTAUtils;
 import qilin.util.Pair;
-import soot.*;
-import soot.jimple.*;
+import soot.ArrayType;
+import soot.Local;
+import soot.Modifier;
+import soot.RefLikeType;
+import soot.RefType;
+import soot.SootClass;
+import soot.SootField;
+import soot.SootMethod;
+import soot.Type;
+import soot.Value;
+import soot.jimple.AbstractStmtSwitch;
+import soot.jimple.ArrayRef;
+import soot.jimple.AssignStmt;
+import soot.jimple.CastExpr;
+import soot.jimple.CaughtExceptionRef;
+import soot.jimple.ClassConstant;
+import soot.jimple.IdentityStmt;
+import soot.jimple.InstanceFieldRef;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.IntConstant;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NewArrayExpr;
+import soot.jimple.NewExpr;
+import soot.jimple.NewMultiArrayExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.ParameterRef;
+import soot.jimple.ReturnStmt;
+import soot.jimple.StaticFieldRef;
+import soot.jimple.Stmt;
+import soot.jimple.StringConstant;
+import soot.jimple.ThisRef;
+import soot.jimple.ThrowStmt;
 import soot.jimple.internal.JNewArrayExpr;
 
 /**
@@ -189,11 +227,10 @@ private FieldRefNode caseInstanceFieldRef(InstanceFieldRef ifr) {
         SootField sf = ifr.getField();
         if (sf == null) {
             sf = new SootField(ifr.getFieldRef().name(), ifr.getType(), Modifier.PUBLIC);
-            sf.setNumber(Scene.v().getFieldNumberer().size());
-            Scene.v().getFieldNumberer().add(sf);
             System.out.println("Warnning:" + ifr + " is resolved to be a null field in Scene.");
         }
-        return pag.makeFieldRefNode(pag.makeLocalVarNode(ifr.getBase(), ifr.getBase().getType(), method), new Field(sf));
+        return pag.makeFieldRefNode(
+                pag.makeLocalVarNode(ifr.getBase(), ifr.getBase().getType(), method), sf);
     }
 
     private VarNode caseNewMultiArrayExpr(NewMultiArrayExpr nmae) {
@@ -307,6 +344,4 @@ final public VarNode caseClassConstant(ClassConstant cc) {
         mpag.addInternalEdge(classConstantVar, vn);
         return vn;
     }
-
-
 }
diff --git a/qilin.core/src/qilin/core/pag/Field.java b/qilin.core/src/qilin/core/pag/Field.java
index 891f956..7e9b389 100644
--- a/qilin.core/src/qilin/core/pag/Field.java
+++ b/qilin.core/src/qilin/core/pag/Field.java
@@ -21,22 +21,25 @@
 import soot.SootField;
 import soot.Type;
 import soot.jimple.spark.pag.SparkField;
+import soot.util.Numberable;
 
 import java.util.Objects;
 
 /**
  * a wrapper of normal field.
  */
-public class Field implements SparkField {
+public class Field implements SparkField, Numberable {
     private final SootField field;
+    private final int number;
 
-    public Field(SootField sf) {
+    public Field(SootField sf, int num) {
         this.field = sf;
+        this.number = num;
     }
 
     @Override
     public int getNumber() {
-        return field.getNumber();
+        return number;
     }
 
     @Override
diff --git a/qilin.core/src/qilin/core/pag/MethodPAG.java b/qilin.core/src/qilin/core/pag/MethodPAG.java
index bd41e95..7bc7f17 100644
--- a/qilin.core/src/qilin/core/pag/MethodPAG.java
+++ b/qilin.core/src/qilin/core/pag/MethodPAG.java
@@ -19,10 +19,15 @@
 package qilin.core.pag;
 
 import qilin.CoreConfig;
-import qilin.util.DataFactory;
 import qilin.core.builder.MethodNodeFactory;
+import qilin.util.DataFactory;
 import qilin.util.PTAUtils;
-import soot.*;
+import soot.Body;
+import soot.PatchingChain;
+import soot.RefType;
+import soot.SootMethod;
+import soot.Trap;
+import soot.Unit;
 import soot.jimple.Jimple;
 import soot.jimple.StaticFieldRef;
 import soot.jimple.Stmt;
@@ -31,7 +36,11 @@
 import soot.util.queue.ChunkedQueue;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 /**
  * Part of a pointer assignment graph for a single method.
diff --git a/qilin.core/src/qilin/core/pag/PAG.java b/qilin.core/src/qilin/core/pag/PAG.java
index d65c7d3..c54272e 100644
--- a/qilin.core/src/qilin/core/pag/PAG.java
+++ b/qilin.core/src/qilin/core/pag/PAG.java
@@ -26,22 +26,38 @@
 import qilin.core.reflection.NopReflectionModel;
 import qilin.core.reflection.ReflectionModel;
 import qilin.core.reflection.TamiflexModel;
-import qilin.parm.heapabst.HeapAbstractor;
 import qilin.util.DataFactory;
 import qilin.util.PTAUtils;
-import qilin.util.Pair;
-import soot.*;
-import soot.jimple.*;
+import soot.ArrayType;
+import soot.Body;
+import soot.Context;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.RefType;
+import soot.SootField;
+import soot.SootMethod;
+import soot.Type;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.ClassConstant;
+import soot.jimple.IntConstant;
+import soot.jimple.InvokeExpr;
+import soot.jimple.StaticInvokeExpr;
+import soot.jimple.Stmt;
+import soot.jimple.StringConstant;
 import soot.jimple.internal.JArrayRef;
 import soot.jimple.internal.JAssignStmt;
-import soot.jimple.internal.JCaughtExceptionRef;
 import soot.jimple.internal.JimpleLocal;
 import soot.jimple.spark.pag.SparkField;
 import soot.util.ArrayNumberer;
 import soot.util.queue.ChunkedQueue;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
 
diff --git a/qilin.core/src/qilin/core/reflection/TamiflexModel.java b/qilin.core/src/qilin/core/reflection/TamiflexModel.java
index b120591..d0a427a 100644
--- a/qilin.core/src/qilin/core/reflection/TamiflexModel.java
+++ b/qilin.core/src/qilin/core/reflection/TamiflexModel.java
@@ -22,16 +22,48 @@
 import qilin.core.PTAScene;
 import qilin.util.DataFactory;
 import qilin.util.PTAUtils;
-import soot.*;
-import soot.jimple.*;
-import soot.jimple.internal.*;
+import soot.ArrayType;
+import soot.Body;
+import soot.Local;
+import soot.RefLikeType;
+import soot.RefType;
+import soot.SootClass;
+import soot.SootField;
+import soot.SootMethod;
+import soot.Type;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.ArrayRef;
+import soot.jimple.AssignStmt;
+import soot.jimple.ClassConstant;
+import soot.jimple.FieldRef;
+import soot.jimple.IntConstant;
+import soot.jimple.InvokeExpr;
+import soot.jimple.Jimple;
+import soot.jimple.NullConstant;
+import soot.jimple.Stmt;
+import soot.jimple.internal.JArrayRef;
+import soot.jimple.internal.JAssignStmt;
+import soot.jimple.internal.JInstanceFieldRef;
+import soot.jimple.internal.JInvokeStmt;
+import soot.jimple.internal.JNewArrayExpr;
+import soot.jimple.internal.JNewExpr;
+import soot.jimple.internal.JSpecialInvokeExpr;
+import soot.jimple.internal.JStaticInvokeExpr;
+import soot.jimple.internal.JVirtualInvokeExpr;
+import soot.jimple.internal.JimpleLocal;
 import soot.tagkit.LineNumberTag;
 
 import java.io.BufferedReader;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 /**
  * This reflection model handles reflection according to the dynamic traces recorded through Tamiflex.
diff --git a/qilin.core/src/qilin/core/sets/UnmodifiablePointsToSet.java b/qilin.core/src/qilin/core/sets/UnmodifiablePointsToSet.java
index c820fbd..59f8efa 100644
--- a/qilin.core/src/qilin/core/sets/UnmodifiablePointsToSet.java
+++ b/qilin.core/src/qilin/core/sets/UnmodifiablePointsToSet.java
@@ -27,7 +27,11 @@
 import soot.Type;
 import soot.jimple.ClassConstant;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Objects;
+import java.util.Set;
 
 public class UnmodifiablePointsToSet implements PointsToSet {
     private final PointsToSetInternal pts;
diff --git a/qilin.core/src/qilin/core/solver/Solver.java b/qilin.core/src/qilin/core/solver/Solver.java
index 0759384..21aa2bb 100644
--- a/qilin.core/src/qilin/core/solver/Solver.java
+++ b/qilin.core/src/qilin/core/solver/Solver.java
@@ -24,14 +24,33 @@
 import qilin.core.builder.CallGraphBuilder;
 import qilin.core.builder.ExceptionHandler;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.ExceptionThrowSite;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.FieldValNode;
+import qilin.core.pag.GlobalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.ValNode;
+import qilin.core.pag.VarNode;
+import qilin.core.pag.VirtualCallSite;
 import qilin.core.sets.DoublePointsToSet;
-import qilin.core.sets.HybridPointsToSet;
 import qilin.core.sets.P2SetVisitor;
 import qilin.core.sets.PointsToSetInternal;
 import qilin.util.PTAUtils;
-import soot.*;
-import soot.jimple.*;
+import soot.Context;
+import soot.Kind;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.SootMethod;
+import soot.Unit;
+import soot.jimple.DynamicInvokeExpr;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.Stmt;
+import soot.jimple.ThrowStmt;
 import soot.jimple.spark.pag.SparkField;
 import soot.jimple.toolkits.callgraph.Edge;
 import soot.options.Options;
@@ -39,7 +58,11 @@
 import soot.util.queue.ChunkedQueue;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+import java.util.TreeSet;
 
 public class Solver extends Propagator {
     private final TreeSet<ValNode> valNodeWorkList = new TreeSet<>();
diff --git a/qilin.core/src/qilin/parm/heapabst/HeuristicAbstractor.java b/qilin.core/src/qilin/parm/heapabst/HeuristicAbstractor.java
index ed388ba..d74ff4d 100644
--- a/qilin.core/src/qilin/parm/heapabst/HeuristicAbstractor.java
+++ b/qilin.core/src/qilin/parm/heapabst/HeuristicAbstractor.java
@@ -23,7 +23,10 @@
 import qilin.core.pag.PAG;
 import qilin.util.DataFactory;
 import qilin.util.PTAUtils;
-import soot.*;
+import soot.RefLikeType;
+import soot.RefType;
+import soot.SootMethod;
+import soot.Type;
 
 import java.util.Set;
 
diff --git a/qilin.core/src/qilin/stat/CallGraphStat.java b/qilin.core/src/qilin/stat/CallGraphStat.java
index cb30261..ce02224 100644
--- a/qilin.core/src/qilin/stat/CallGraphStat.java
+++ b/qilin.core/src/qilin/stat/CallGraphStat.java
@@ -160,7 +160,7 @@ private long thisReceiverCount() {
 
     @Override
     public void export(Exporter exporter) {
-        exporter.collectMetric("#Method (Static):", String.valueOf(PTAScene.v().getMethodNumberer().size() - 1));// -fakeMain
+        exporter.collectMetric("#Method (Static):", String.valueOf(PTAScene.v().getAllMethods().size() - 1));// -fakeMain
         exporter.collectMetric("#Reachable Method (CI):", String.valueOf(reachableMethods.size() - 1));// -fakeMain
         exporter.collectMetric("\t#Reachable-Static Method (CI):", String.valueOf(reachableStatic - 1));// -fakeMain
         exporter.collectMetric("#Reachable Method (CS):", String.valueOf(reachableParameterizedMethods.size() - 1));// -fakeMain
diff --git a/qilin.core/src/qilin/stat/Exporter.java b/qilin.core/src/qilin/stat/Exporter.java
index ad20690..fb6f74b 100644
--- a/qilin.core/src/qilin/stat/Exporter.java
+++ b/qilin.core/src/qilin/stat/Exporter.java
@@ -39,7 +39,11 @@
 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
-import java.util.*;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
 
 public class Exporter {
     private final String metrics = "Metrics.csv";
diff --git a/qilin.core/src/qilin/stat/PAGStat.java b/qilin.core/src/qilin/stat/PAGStat.java
index d2989a2..d4d630a 100644
--- a/qilin.core/src/qilin/stat/PAGStat.java
+++ b/qilin.core/src/qilin/stat/PAGStat.java
@@ -19,7 +19,11 @@
 package qilin.stat;
 
 import qilin.core.PTA;
-import qilin.core.pag.*;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.PAG;
+import qilin.core.pag.ValNode;
+import qilin.core.pag.VarNode;
 
 import java.util.Map;
 import java.util.Set;
diff --git a/qilin.core/src/qilin/stat/PointsToStat.java b/qilin.core/src/qilin/stat/PointsToStat.java
index 3ff9a9d..9842128 100644
--- a/qilin.core/src/qilin/stat/PointsToStat.java
+++ b/qilin.core/src/qilin/stat/PointsToStat.java
@@ -21,12 +21,29 @@
 import qilin.CoreConfig;
 import qilin.core.PTA;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.GlobalVarNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.VarNode;
 import qilin.core.sets.PointsToSet;
 import qilin.util.PTAUtils;
-import soot.*;
+import soot.Context;
+import soot.Local;
+import soot.RefLikeType;
+import soot.SootField;
+import soot.SootMethod;
+import soot.Type;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
 
 public class PointsToStat implements AbstractStat {
     private final PTA pta;
diff --git a/qilin.core/src/qilin/stat/SimplifiedEvaluator.java b/qilin.core/src/qilin/stat/SimplifiedEvaluator.java
index d166b05..f8a19ea 100644
--- a/qilin.core/src/qilin/stat/SimplifiedEvaluator.java
+++ b/qilin.core/src/qilin/stat/SimplifiedEvaluator.java
@@ -21,16 +21,33 @@
 import qilin.core.PTA;
 import qilin.core.builder.FakeMainFactory;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
 import qilin.core.sets.PointsToSet;
 import qilin.util.PTAUtils;
 import qilin.util.Stopwatch;
-import soot.*;
-import soot.jimple.*;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.RefLikeType;
+import soot.SootMethod;
+import soot.Type;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.AssignStmt;
+import soot.jimple.CastExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.StaticInvokeExpr;
+import soot.jimple.Stmt;
 import soot.jimple.toolkits.callgraph.CallGraph;
 import soot.jimple.toolkits.callgraph.Edge;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
 
 public class SimplifiedEvaluator implements IEvaluator {
     protected final PTA pta;
diff --git a/qilin.core/src/qilin/stat/TypeClientStat.java b/qilin.core/src/qilin/stat/TypeClientStat.java
index 4386eca..d09ccb6 100644
--- a/qilin.core/src/qilin/stat/TypeClientStat.java
+++ b/qilin.core/src/qilin/stat/TypeClientStat.java
@@ -23,12 +23,27 @@
 import qilin.core.builder.FakeMainFactory;
 import qilin.core.pag.AllocNode;
 import qilin.util.PTAUtils;
-import soot.*;
-import soot.jimple.*;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.RefLikeType;
+import soot.SootMethod;
+import soot.Type;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.AssignStmt;
+import soot.jimple.CastExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.StaticInvokeExpr;
+import soot.jimple.Stmt;
 import soot.jimple.toolkits.callgraph.CallGraph;
 import soot.jimple.toolkits.callgraph.Edge;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
 
 public class TypeClientStat implements AbstractStat {
     private final PTA pta;
diff --git a/qilin.core/src/qilin/util/PTAUtils.java b/qilin.core/src/qilin/util/PTAUtils.java
index 44ef0d5..3ee6474 100644
--- a/qilin.core/src/qilin/util/PTAUtils.java
+++ b/qilin.core/src/qilin/util/PTAUtils.java
@@ -27,12 +27,49 @@
 import qilin.core.builder.MethodNodeFactory;
 import qilin.core.context.ContextElement;
 import qilin.core.context.ContextElements;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ContextAllocNode;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.ContextVarNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.GlobalVarNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.Parm;
+import qilin.core.pag.ValNode;
+import qilin.core.pag.VarNode;
+import qilin.core.pag.VirtualCallSite;
 import qilin.core.sets.PointsToSet;
 import qilin.core.sets.PointsToSetInternal;
 import qilin.util.queue.UniqueQueue;
-import soot.*;
-import soot.jimple.*;
+import soot.AnySubType;
+import soot.ArrayType;
+import soot.Body;
+import soot.Context;
+import soot.Hierarchy;
+import soot.Kind;
+import soot.MethodOrMethodContext;
+import soot.NullType;
+import soot.PrimType;
+import soot.Printer;
+import soot.RefType;
+import soot.Scene;
+import soot.SootClass;
+import soot.SootMethod;
+import soot.Type;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.IntConstant;
+import soot.jimple.InvokeExpr;
+import soot.jimple.JimpleBody;
+import soot.jimple.NewArrayExpr;
+import soot.jimple.SpecialInvokeExpr;
+import soot.jimple.StaticInvokeExpr;
+import soot.jimple.Stmt;
 import soot.jimple.toolkits.callgraph.CallGraph;
 import soot.jimple.toolkits.callgraph.Edge;
 import soot.util.NumberedString;
@@ -42,9 +79,26 @@
 import soot.util.queue.ChunkedQueue;
 import soot.util.queue.QueueReader;
 
-import java.io.*;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
 import java.net.URL;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Scanner;
+import java.util.Set;
+import java.util.TreeMap;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 
diff --git a/qilin.pta/build.gradle b/qilin.pta/build.gradle
index 0eea16a..adea617 100644
--- a/qilin.pta/build.gradle
+++ b/qilin.pta/build.gradle
@@ -21,7 +21,7 @@ test {
 }
 
 dependencies {
-    implementation("org.soot-oss:soot:4.4.0")
+    implementation("org.soot-oss:soot:4.5.0")
     implementation("de.upb.cs.swt:axml:2.1.1")
     implementation("de.upb.cs.swt:heros:1.2.3")
     implementation("ca.mcgill.sable:jasmin:3.0.3")
diff --git a/qilin.pta/src/driver/Main.java b/qilin.pta/src/driver/Main.java
index c36b67d..c9e68c7 100644
--- a/qilin.pta/src/driver/Main.java
+++ b/qilin.pta/src/driver/Main.java
@@ -31,8 +31,11 @@
 import soot.jimple.toolkits.callgraph.CallGraph;
 import soot.options.Options;
 
-import java.io.*;
-import java.util.*;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
 import java.util.stream.Collectors;
 
 public class Main {
diff --git a/qilin.pta/src/driver/PTAComparator.java b/qilin.pta/src/driver/PTAComparator.java
index 9598ccd..93b363d 100644
--- a/qilin.pta/src/driver/PTAComparator.java
+++ b/qilin.pta/src/driver/PTAComparator.java
@@ -28,7 +28,14 @@
 import soot.Local;
 
 import java.io.PrintStream;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 public class PTAComparator {
     static final boolean verbose = true;
diff --git a/qilin.pta/src/driver/PTAFactory.java b/qilin.pta/src/driver/PTAFactory.java
index 41fe633..b67ab5a 100644
--- a/qilin.pta/src/driver/PTAFactory.java
+++ b/qilin.pta/src/driver/PTAFactory.java
@@ -19,9 +19,27 @@
 package driver;
 
 import qilin.core.PTA;
-import qilin.parm.ctxcons.*;
+import qilin.parm.ctxcons.CallsiteCtxConstructor;
+import qilin.parm.ctxcons.CtxConstructor;
+import qilin.parm.ctxcons.HybObjCtxConstructor;
+import qilin.parm.ctxcons.ObjCtxConstructor;
+import qilin.parm.ctxcons.TypeCtxConstructor;
 import qilin.pta.PTAConfig;
-import qilin.pta.tools.*;
+import qilin.pta.tools.BasePTA;
+import qilin.pta.tools.BeanPTA;
+import qilin.pta.tools.CallSiteSensPTA;
+import qilin.pta.tools.DataDrivenPTA;
+import qilin.pta.tools.DebloatedPTA;
+import qilin.pta.tools.EaglePTA;
+import qilin.pta.tools.HybridObjectSensPTA;
+import qilin.pta.tools.MahjongPTA;
+import qilin.pta.tools.ObjectSensPTA;
+import qilin.pta.tools.SelectxPTA;
+import qilin.pta.tools.Spark;
+import qilin.pta.tools.TunnelingPTA;
+import qilin.pta.tools.TurnerPTA;
+import qilin.pta.tools.TypeSensPTA;
+import qilin.pta.tools.ZipperPTA;
 
 public class PTAFactory {
     public static PTA createPTA(PTAPattern ptaPattern) {
diff --git a/qilin.pta/src/driver/PTAOption.java b/qilin.pta/src/driver/PTAOption.java
index f61035c..0bb8487 100644
--- a/qilin.pta/src/driver/PTAOption.java
+++ b/qilin.pta/src/driver/PTAOption.java
@@ -18,14 +18,21 @@
 
 package driver;
 
-import org.apache.commons.cli.*;
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.GnuParser;
+import org.apache.commons.cli.HelpFormatter;
+import org.apache.commons.cli.Option;
+import org.apache.commons.cli.OptionBuilder;
+import org.apache.commons.cli.Options;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import qilin.pta.PTAConfig;
 import qilin.pta.toolkits.turner.Turner;
 import qilin.pta.tools.DebloatedPTA;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 
 public class PTAOption extends Options {
     private static final Logger logger = LoggerFactory.getLogger(PTAOption.class);
diff --git a/qilin.pta/src/qilin/pta/toolkits/bean/RepresentativeContextSelector.java b/qilin.pta/src/qilin/pta/toolkits/bean/RepresentativeContextSelector.java
index 95f6acf..d098fe4 100644
--- a/qilin.pta/src/qilin/pta/toolkits/bean/RepresentativeContextSelector.java
+++ b/qilin.pta/src/qilin/pta/toolkits/bean/RepresentativeContextSelector.java
@@ -24,7 +24,13 @@
 import qilin.pta.toolkits.common.OAG;
 import qilin.util.Triple;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 /**
diff --git a/qilin.pta/src/qilin/pta/toolkits/common/FieldPointstoGraph.java b/qilin.pta/src/qilin/pta/toolkits/common/FieldPointstoGraph.java
index 2dc40e8..fe95212 100644
--- a/qilin.pta/src/qilin/pta/toolkits/common/FieldPointstoGraph.java
+++ b/qilin.pta/src/qilin/pta/toolkits/common/FieldPointstoGraph.java
@@ -24,7 +24,12 @@
 import qilin.core.sets.PointsToSet;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
 
 public class FieldPointstoGraph {
     private final Map<AllocNode, Map<SparkField, Set<AllocNode>>> pointsTo = new HashMap<>();
diff --git a/qilin.pta/src/qilin/pta/toolkits/common/OAG.java b/qilin.pta/src/qilin/pta/toolkits/common/OAG.java
index e1018e6..35ad6cf 100644
--- a/qilin.pta/src/qilin/pta/toolkits/common/OAG.java
+++ b/qilin.pta/src/qilin/pta/toolkits/common/OAG.java
@@ -29,7 +29,13 @@
 import soot.SootMethod;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
 
 /**
  * Implementation of Object Allocation Graph (OAG).
diff --git a/qilin.pta/src/qilin/pta/toolkits/common/ToolUtil.java b/qilin.pta/src/qilin/pta/toolkits/common/ToolUtil.java
index e542c95..483e162 100644
--- a/qilin.pta/src/qilin/pta/toolkits/common/ToolUtil.java
+++ b/qilin.pta/src/qilin/pta/toolkits/common/ToolUtil.java
@@ -19,7 +19,6 @@
 package qilin.pta.toolkits.common;
 
 import qilin.core.PTA;
-import qilin.core.PTAScene;
 import qilin.core.builder.MethodNodeFactory;
 import qilin.core.pag.PAG;
 import qilin.core.pag.VarNode;
diff --git a/qilin.pta/src/qilin/pta/toolkits/conch/AbstractConch.java b/qilin.pta/src/qilin/pta/toolkits/conch/AbstractConch.java
index 5af968d..b9a85e7 100644
--- a/qilin.pta/src/qilin/pta/toolkits/conch/AbstractConch.java
+++ b/qilin.pta/src/qilin/pta/toolkits/conch/AbstractConch.java
@@ -20,7 +20,14 @@
 
 import qilin.core.PTA;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.StringConstantNode;
+import qilin.core.pag.VarNode;
 import qilin.core.sets.PointsToSet;
 import qilin.util.PTAUtils;
 import qilin.util.Pair;
@@ -29,7 +36,12 @@
 import soot.SootMethod;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
 
 public class AbstractConch {
     public final PTA pta;
diff --git a/qilin.pta/src/qilin/pta/toolkits/conch/AbstractPAG.java b/qilin.pta/src/qilin/pta/toolkits/conch/AbstractPAG.java
index 514c584..ec614be 100644
--- a/qilin.pta/src/qilin/pta/toolkits/conch/AbstractPAG.java
+++ b/qilin.pta/src/qilin/pta/toolkits/conch/AbstractPAG.java
@@ -23,7 +23,14 @@
 import qilin.core.PTA;
 import qilin.core.PointsToAnalysis;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ConstantNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.Parm;
 import soot.RefLikeType;
 import soot.SootMethod;
 import soot.jimple.Stmt;
diff --git a/qilin.pta/src/qilin/pta/toolkits/conch/Conch.java b/qilin.pta/src/qilin/pta/toolkits/conch/Conch.java
index deaad92..5843de6 100644
--- a/qilin.pta/src/qilin/pta/toolkits/conch/Conch.java
+++ b/qilin.pta/src/qilin/pta/toolkits/conch/Conch.java
@@ -20,7 +20,12 @@
 
 import qilin.core.PTA;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ConstantNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.VarNode;
 import qilin.core.sets.PointsToSet;
 import qilin.util.PTAUtils;
 import qilin.util.Pair;
@@ -33,7 +38,13 @@
 import soot.jimple.Stmt;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 /*
diff --git a/qilin.pta/src/qilin/pta/toolkits/conch/DepOnParamAnalysis.java b/qilin.pta/src/qilin/pta/toolkits/conch/DepOnParamAnalysis.java
index b99aaef..e2ea049 100644
--- a/qilin.pta/src/qilin/pta/toolkits/conch/DepOnParamAnalysis.java
+++ b/qilin.pta/src/qilin/pta/toolkits/conch/DepOnParamAnalysis.java
@@ -20,7 +20,11 @@
 
 import qilin.core.PTA;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.VarNode;
 import qilin.util.PTAUtils;
 import soot.SootMethod;
 import soot.jimple.AssignStmt;
diff --git a/qilin.pta/src/qilin/pta/toolkits/conch/LeakAnalysis.java b/qilin.pta/src/qilin/pta/toolkits/conch/LeakAnalysis.java
index dcee2a5..bfacab0 100644
--- a/qilin.pta/src/qilin/pta/toolkits/conch/LeakAnalysis.java
+++ b/qilin.pta/src/qilin/pta/toolkits/conch/LeakAnalysis.java
@@ -19,7 +19,11 @@
 package qilin.pta.toolkits.conch;
 
 import qilin.core.PTA;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.VarNode;
 import qilin.util.PTAUtils;
 import soot.SootMethod;
 import soot.jimple.Stmt;
diff --git a/qilin.pta/src/qilin/pta/toolkits/conch/SMPAG.java b/qilin.pta/src/qilin/pta/toolkits/conch/SMPAG.java
index 67719f6..0d064c5 100644
--- a/qilin.pta/src/qilin/pta/toolkits/conch/SMPAG.java
+++ b/qilin.pta/src/qilin/pta/toolkits/conch/SMPAG.java
@@ -18,7 +18,11 @@
 
 package qilin.pta.toolkits.conch;
 
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
 import qilin.util.Pair;
 import qilin.util.graph.DirectedGraphImpl;
 import qilin.util.queue.UniqueQueue;
diff --git a/qilin.pta/src/qilin/pta/toolkits/dd/CtxTunnelingFeaturesTrueTable.java b/qilin.pta/src/qilin/pta/toolkits/dd/CtxTunnelingFeaturesTrueTable.java
index 585feb7..87343e1 100644
--- a/qilin.pta/src/qilin/pta/toolkits/dd/CtxTunnelingFeaturesTrueTable.java
+++ b/qilin.pta/src/qilin/pta/toolkits/dd/CtxTunnelingFeaturesTrueTable.java
@@ -19,8 +19,23 @@
 package qilin.pta.toolkits.dd;
 
 import qilin.util.PTAUtils;
-import soot.*;
-import soot.jimple.*;
+import soot.Body;
+import soot.Local;
+import soot.SootClass;
+import soot.SootMethod;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.ArrayRef;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceFieldRef;
+import soot.jimple.InterfaceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.InvokeStmt;
+import soot.jimple.NewArrayExpr;
+import soot.jimple.NewExpr;
+import soot.jimple.NewMultiArrayExpr;
+import soot.jimple.StaticInvokeExpr;
+import soot.jimple.VirtualInvokeExpr;
 
 /*
  * features and formulas used in "Precise and Scalable Points-to Analysis via Data-Driven
diff --git a/qilin.pta/src/qilin/pta/toolkits/dd/FeaturesTrueTable.java b/qilin.pta/src/qilin/pta/toolkits/dd/FeaturesTrueTable.java
index da07066..8d322fe 100644
--- a/qilin.pta/src/qilin/pta/toolkits/dd/FeaturesTrueTable.java
+++ b/qilin.pta/src/qilin/pta/toolkits/dd/FeaturesTrueTable.java
@@ -22,7 +22,21 @@
 import soot.Body;
 import soot.SootMethod;
 import soot.Unit;
-import soot.jimple.*;
+import soot.jimple.AssignStmt;
+import soot.jimple.BreakpointStmt;
+import soot.jimple.EnterMonitorStmt;
+import soot.jimple.ExitMonitorStmt;
+import soot.jimple.GotoStmt;
+import soot.jimple.IdentityStmt;
+import soot.jimple.IfStmt;
+import soot.jimple.InvokeStmt;
+import soot.jimple.LookupSwitchStmt;
+import soot.jimple.NopStmt;
+import soot.jimple.RetStmt;
+import soot.jimple.ReturnStmt;
+import soot.jimple.ReturnVoidStmt;
+import soot.jimple.TableSwitchStmt;
+import soot.jimple.ThrowStmt;
 
 /*
  * features and formulas used in "Data-driven context-sensitivity for Points-to Analysis (OOPSLA 2017)"
diff --git a/qilin.pta/src/qilin/pta/toolkits/dd/TunnelingConstructor.java b/qilin.pta/src/qilin/pta/toolkits/dd/TunnelingConstructor.java
index 4b0eac2..0796747 100644
--- a/qilin.pta/src/qilin/pta/toolkits/dd/TunnelingConstructor.java
+++ b/qilin.pta/src/qilin/pta/toolkits/dd/TunnelingConstructor.java
@@ -20,7 +20,11 @@
 
 import qilin.core.pag.CallSite;
 import qilin.core.pag.ContextAllocNode;
-import qilin.parm.ctxcons.*;
+import qilin.parm.ctxcons.CallsiteCtxConstructor;
+import qilin.parm.ctxcons.CtxConstructor;
+import qilin.parm.ctxcons.HybObjCtxConstructor;
+import qilin.parm.ctxcons.ObjCtxConstructor;
+import qilin.parm.ctxcons.TypeCtxConstructor;
 import soot.Context;
 import soot.MethodOrMethodContext;
 import soot.SootMethod;
diff --git a/qilin.pta/src/qilin/pta/toolkits/debloaterx/ContainerFinder.java b/qilin.pta/src/qilin/pta/toolkits/debloaterx/ContainerFinder.java
index c614de0..833d7aa 100644
--- a/qilin.pta/src/qilin/pta/toolkits/debloaterx/ContainerFinder.java
+++ b/qilin.pta/src/qilin/pta/toolkits/debloaterx/ContainerFinder.java
@@ -5,12 +5,17 @@
 import qilin.core.pag.ArrayElement;
 import qilin.core.pag.PAG;
 import qilin.util.Stopwatch;
-import soot.*;
+import soot.ArrayType;
+import soot.RefType;
+import soot.Type;
+import soot.Value;
 import soot.jimple.IntConstant;
 import soot.jimple.internal.JNewArrayExpr;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Collectors;
 
diff --git a/qilin.pta/src/qilin/pta/toolkits/debloaterx/DebloaterX.java b/qilin.pta/src/qilin/pta/toolkits/debloaterx/DebloaterX.java
index 14be05a..6935c02 100644
--- a/qilin.pta/src/qilin/pta/toolkits/debloaterx/DebloaterX.java
+++ b/qilin.pta/src/qilin/pta/toolkits/debloaterx/DebloaterX.java
@@ -2,12 +2,22 @@
 
 import com.google.common.collect.Sets;
 import qilin.core.PTA;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.PAG;
+import qilin.core.pag.VarNode;
 import qilin.core.sets.PointsToSet;
-import soot.*;
+import soot.RefLikeType;
+import soot.RefType;
+import soot.SootMethod;
+import soot.Type;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
 /*
diff --git a/qilin.pta/src/qilin/pta/toolkits/debloaterx/HeapContainerQuery.java b/qilin.pta/src/qilin/pta/toolkits/debloaterx/HeapContainerQuery.java
index baab883..327860a 100644
--- a/qilin.pta/src/qilin/pta/toolkits/debloaterx/HeapContainerQuery.java
+++ b/qilin.pta/src/qilin/pta/toolkits/debloaterx/HeapContainerQuery.java
@@ -1,12 +1,16 @@
 package qilin.pta.toolkits.debloaterx;
 
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.PAG;
 import qilin.util.PTAUtils;
-import soot.*;
+import soot.RefLikeType;
+import soot.SootMethod;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.HashSet;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 public class HeapContainerQuery {
diff --git a/qilin.pta/src/qilin/pta/toolkits/debloaterx/IntraFlowAnalysis.java b/qilin.pta/src/qilin/pta/toolkits/debloaterx/IntraFlowAnalysis.java
index 65e78c7..269beaf 100644
--- a/qilin.pta/src/qilin/pta/toolkits/debloaterx/IntraFlowAnalysis.java
+++ b/qilin.pta/src/qilin/pta/toolkits/debloaterx/IntraFlowAnalysis.java
@@ -1,11 +1,24 @@
 package qilin.pta.toolkits.debloaterx;
 
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.ValNode;
+import qilin.core.pag.VarNode;
+import qilin.core.pag.VirtualCallSite;
 import qilin.util.PTAUtils;
 import qilin.util.Pair;
 import qilin.util.queue.UniqueQueue;
-import soot.*;
+import soot.ArrayType;
+import soot.RefLikeType;
+import soot.RefType;
+import soot.SootMethod;
+import soot.Type;
+import soot.Unit;
+import soot.Value;
 import soot.jimple.InstanceInvokeExpr;
 import soot.jimple.InvokeExpr;
 import soot.jimple.NullConstant;
diff --git a/qilin.pta/src/qilin/pta/toolkits/debloaterx/XPAG.java b/qilin.pta/src/qilin/pta/toolkits/debloaterx/XPAG.java
index a05706a..17e4315 100644
--- a/qilin.pta/src/qilin/pta/toolkits/debloaterx/XPAG.java
+++ b/qilin.pta/src/qilin/pta/toolkits/debloaterx/XPAG.java
@@ -2,19 +2,35 @@
 
 import qilin.core.PTA;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ConstantNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.ValNode;
+import qilin.core.pag.VarNode;
 import qilin.util.PTAUtils;
-import qilin.util.queue.UniqueQueue;
 import soot.RefLikeType;
 import soot.RefType;
 import soot.SootMethod;
 import soot.Unit;
 import soot.Value;
-import soot.jimple.*;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.SpecialInvokeExpr;
+import soot.jimple.StaticInvokeExpr;
+import soot.jimple.Stmt;
 import soot.jimple.spark.pag.SparkField;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
 public class XPAG {
diff --git a/qilin.pta/src/qilin/pta/toolkits/debloaterx/XUtility.java b/qilin.pta/src/qilin/pta/toolkits/debloaterx/XUtility.java
index d650956..583c611 100644
--- a/qilin.pta/src/qilin/pta/toolkits/debloaterx/XUtility.java
+++ b/qilin.pta/src/qilin/pta/toolkits/debloaterx/XUtility.java
@@ -3,7 +3,14 @@
 import qilin.core.PTA;
 import qilin.core.PTAScene;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.VarNode;
+import qilin.core.pag.VirtualCallSite;
 import qilin.util.PTAUtils;
 import qilin.util.Stopwatch;
 import soot.ArrayType;
@@ -21,7 +28,12 @@
 import soot.util.NumberedString;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Collectors;
 
@@ -282,8 +294,7 @@ public Set<SparkField> getFields(Type type) {
                 for (AllocNode heap : this.o2Fields.keySet()) {
                     if (PTAScene.v().getOrMakeFastHierarchy().canStoreType(heap.getType(), refType)) {
                         for (SparkField sparkField : this.o2Fields.get(heap)) {
-                            if (sparkField instanceof Field f) {
-                                SootField sf = f.getField();
+                            if (sparkField instanceof SootField sf) {
                                 Type declType = sf.getDeclaringClass().getType();
                                 if (PTAScene.v().getOrMakeFastHierarchy().canStoreType(type, declType)) {
                                     ret.add(sparkField);
diff --git a/qilin.pta/src/qilin/pta/toolkits/eagle/Eagle.java b/qilin.pta/src/qilin/pta/toolkits/eagle/Eagle.java
index c34d656..ede1cd9 100644
--- a/qilin.pta/src/qilin/pta/toolkits/eagle/Eagle.java
+++ b/qilin.pta/src/qilin/pta/toolkits/eagle/Eagle.java
@@ -21,7 +21,15 @@
 import qilin.core.PTA;
 import qilin.core.PointsToAnalysis;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.Parm;
+import qilin.core.pag.ValNode;
+import qilin.core.pag.VarNode;
 import qilin.core.sets.PointsToSet;
 import qilin.util.PTAUtils;
 import qilin.util.Util;
@@ -30,13 +38,24 @@
 import soot.SootMethod;
 import soot.Unit;
 import soot.Value;
-import soot.jimple.*;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.Stmt;
 import soot.jimple.spark.pag.SparkField;
 import soot.jimple.toolkits.callgraph.CallGraph;
 import soot.jimple.toolkits.callgraph.Edge;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 // implementation of Eagle (OOPSLA'19).
@@ -183,7 +202,7 @@ public Collection<BNode> getOutEdges(BNode node) {
 
     public boolean reachValidReceiverObject(BNode from, BNode to) {
         BNode fromEI = getBNode(to.sparkNode, false);
-        if (from.sparkNode instanceof Field || from.sparkNode instanceof ArrayElement) {
+        if (from.sparkNode instanceof SparkField) {
             return getOutEdges(fromEI).contains(from);
         }
         return true;
diff --git a/qilin.pta/src/qilin/pta/toolkits/mahjong/HeapAbstraction.java b/qilin.pta/src/qilin/pta/toolkits/mahjong/HeapAbstraction.java
index 4c0bfa3..8f66835 100644
--- a/qilin.pta/src/qilin/pta/toolkits/mahjong/HeapAbstraction.java
+++ b/qilin.pta/src/qilin/pta/toolkits/mahjong/HeapAbstraction.java
@@ -2,11 +2,11 @@
 
 import qilin.core.pag.AllocNode;
 import qilin.core.pag.Node;
+import qilin.pta.toolkits.common.FieldPointstoGraph;
 import qilin.pta.toolkits.mahjong.automata.DFA;
 import qilin.pta.toolkits.mahjong.automata.DFAEquivalenceChecker;
 import qilin.pta.toolkits.mahjong.automata.DFAFactory;
 import qilin.pta.toolkits.mahjong.automata.DFAState;
-import qilin.pta.toolkits.common.FieldPointstoGraph;
 import qilin.util.UnionFindSet;
 import soot.Type;
 
diff --git a/qilin.pta/src/qilin/pta/toolkits/mahjong/automata/DFAFactory.java b/qilin.pta/src/qilin/pta/toolkits/mahjong/automata/DFAFactory.java
index 7fc1098..564a01d 100644
--- a/qilin.pta/src/qilin/pta/toolkits/mahjong/automata/DFAFactory.java
+++ b/qilin.pta/src/qilin/pta/toolkits/mahjong/automata/DFAFactory.java
@@ -5,7 +5,14 @@
 import soot.Type;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 /**
diff --git a/qilin.pta/src/qilin/pta/toolkits/mahjong/automata/DFAState.java b/qilin.pta/src/qilin/pta/toolkits/mahjong/automata/DFAState.java
index 3299792..25d383b 100644
--- a/qilin.pta/src/qilin/pta/toolkits/mahjong/automata/DFAState.java
+++ b/qilin.pta/src/qilin/pta/toolkits/mahjong/automata/DFAState.java
@@ -4,7 +4,11 @@
 import soot.Type;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedHashSet;
+import java.util.Map;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 /**
diff --git a/qilin.pta/src/qilin/pta/toolkits/selectx/BNode.java b/qilin.pta/src/qilin/pta/toolkits/selectx/BNode.java
index 11a34a1..4e4fe89 100644
--- a/qilin.pta/src/qilin/pta/toolkits/selectx/BNode.java
+++ b/qilin.pta/src/qilin/pta/toolkits/selectx/BNode.java
@@ -20,7 +20,6 @@
 
 import qilin.core.pag.Node;
 
-import java.util.Set;
 import java.util.stream.Stream;
 
 public abstract class BNode {
diff --git a/qilin.pta/src/qilin/pta/toolkits/selectx/G.java b/qilin.pta/src/qilin/pta/toolkits/selectx/G.java
index 69e1346..ed77ceb 100644
--- a/qilin.pta/src/qilin/pta/toolkits/selectx/G.java
+++ b/qilin.pta/src/qilin/pta/toolkits/selectx/G.java
@@ -18,11 +18,14 @@
 
 package qilin.pta.toolkits.selectx;
 
-import java.util.*;
-import java.util.stream.Stream;
-
 import qilin.core.pag.GlobalVarNode;
 
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Stream;
+
 public class G extends BNode {
     public static Map<GlobalVarNode, G> g2GN = new HashMap<>();
     public static Map<GlobalVarNode, G> g2GP = new HashMap<>();
diff --git a/qilin.pta/src/qilin/pta/toolkits/selectx/L.java b/qilin.pta/src/qilin/pta/toolkits/selectx/L.java
index 4998e58..b2f37df 100644
--- a/qilin.pta/src/qilin/pta/toolkits/selectx/L.java
+++ b/qilin.pta/src/qilin/pta/toolkits/selectx/L.java
@@ -21,7 +21,12 @@
 import qilin.core.pag.LocalVarNode;
 import qilin.util.Util;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
diff --git a/qilin.pta/src/qilin/pta/toolkits/selectx/Selectx.java b/qilin.pta/src/qilin/pta/toolkits/selectx/Selectx.java
index f4189f2..009ecc8 100644
--- a/qilin.pta/src/qilin/pta/toolkits/selectx/Selectx.java
+++ b/qilin.pta/src/qilin/pta/toolkits/selectx/Selectx.java
@@ -18,20 +18,39 @@
 
 package qilin.pta.toolkits.selectx;
 
-import java.util.*;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-
 import qilin.core.PTA;
 import qilin.core.PointsToAnalysis;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
-import soot.*;
-import soot.jimple.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.CallSite;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.GlobalVarNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.Parm;
+import soot.RefLikeType;
+import soot.SootMethod;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.Stmt;
 import soot.jimple.spark.pag.SparkField;
 import soot.jimple.toolkits.callgraph.Edge;
 import soot.util.queue.QueueReader;
 
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
 public class Selectx {
     private final PTA prePTA;
     private final PAG prePAG;
diff --git a/qilin.pta/src/qilin/pta/toolkits/turner/AbstractMVFG.java b/qilin.pta/src/qilin/pta/toolkits/turner/AbstractMVFG.java
index 0a9fa49..1ee72c6 100644
--- a/qilin.pta/src/qilin/pta/toolkits/turner/AbstractMVFG.java
+++ b/qilin.pta/src/qilin/pta/toolkits/turner/AbstractMVFG.java
@@ -21,19 +21,37 @@
 import qilin.core.PTA;
 import qilin.core.PointsToAnalysis;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.Parm;
+import qilin.core.pag.ValNode;
 import qilin.util.Pair;
 import qilin.util.queue.UniqueQueue;
 import soot.RefLikeType;
 import soot.SootMethod;
 import soot.Unit;
 import soot.Value;
-import soot.jimple.*;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.Stmt;
 import soot.jimple.toolkits.callgraph.CallGraph;
 import soot.jimple.toolkits.callgraph.Edge;
 import soot.util.queue.QueueReader;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
 
 public abstract class AbstractMVFG {
     public static Map<SootMethod, AbstractMVFG> method2VFG = new HashMap<>();
diff --git a/qilin.pta/src/qilin/pta/toolkits/turner/OCG.java b/qilin.pta/src/qilin/pta/toolkits/turner/OCG.java
index 18d34f6..dbe831d 100644
--- a/qilin.pta/src/qilin/pta/toolkits/turner/OCG.java
+++ b/qilin.pta/src/qilin/pta/toolkits/turner/OCG.java
@@ -20,14 +20,28 @@
 
 import qilin.core.PTA;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ConstantNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
 import qilin.core.sets.PointsToSet;
 import qilin.pta.PTAConfig;
 import qilin.util.PTAUtils;
-import soot.*;
+import soot.ArrayType;
+import soot.PrimType;
+import soot.RefLikeType;
+import soot.SootMethod;
+import soot.Type;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
 
 // Object Containment Graph
 public class OCG {
diff --git a/qilin.pta/src/qilin/pta/toolkits/turner/Turner.java b/qilin.pta/src/qilin/pta/toolkits/turner/Turner.java
index fd65911..8399514 100644
--- a/qilin.pta/src/qilin/pta/toolkits/turner/Turner.java
+++ b/qilin.pta/src/qilin/pta/toolkits/turner/Turner.java
@@ -28,7 +28,12 @@
 import soot.SootMethod;
 import soot.jimple.spark.pag.SparkField;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
 public class Turner {
diff --git a/qilin.pta/src/qilin/pta/toolkits/zipper/analysis/PotentialContextElement.java b/qilin.pta/src/qilin/pta/toolkits/zipper/analysis/PotentialContextElement.java
index 29c07f3..564c36b 100644
--- a/qilin.pta/src/qilin/pta/toolkits/zipper/analysis/PotentialContextElement.java
+++ b/qilin.pta/src/qilin/pta/toolkits/zipper/analysis/PotentialContextElement.java
@@ -14,7 +14,14 @@
 import soot.SootMethod;
 import soot.Type;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
diff --git a/qilin.pta/src/qilin/pta/toolkits/zipper/analysis/Zipper.java b/qilin.pta/src/qilin/pta/toolkits/zipper/analysis/Zipper.java
index 06f061d..2ef60b0 100644
--- a/qilin.pta/src/qilin/pta/toolkits/zipper/analysis/Zipper.java
+++ b/qilin.pta/src/qilin/pta/toolkits/zipper/analysis/Zipper.java
@@ -1,7 +1,12 @@
 package qilin.pta.toolkits.zipper.analysis;
 
 import qilin.core.PTA;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.Node;
+import qilin.core.pag.ValNode;
+import qilin.core.pag.VarNode;
 import qilin.pta.toolkits.common.OAG;
 import qilin.pta.toolkits.common.ToolUtil;
 import qilin.pta.toolkits.zipper.Global;
@@ -14,7 +19,15 @@
 import soot.SootMethod;
 import soot.Type;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
diff --git a/qilin.pta/src/qilin/pta/toolkits/zipper/flowgraph/FlowAnalysis.java b/qilin.pta/src/qilin/pta/toolkits/zipper/flowgraph/FlowAnalysis.java
index 9bfa481..2d969d2 100644
--- a/qilin.pta/src/qilin/pta/toolkits/zipper/flowgraph/FlowAnalysis.java
+++ b/qilin.pta/src/qilin/pta/toolkits/zipper/flowgraph/FlowAnalysis.java
@@ -1,20 +1,37 @@
 package qilin.pta.toolkits.zipper.flowgraph;
 
 import qilin.core.PTA;
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.ContextVarNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.Node;
+import qilin.core.pag.VarNode;
 import qilin.pta.toolkits.common.ToolUtil;
 import qilin.pta.toolkits.zipper.Global;
 import qilin.pta.toolkits.zipper.analysis.PotentialContextElement;
 import qilin.util.ANSIColor;
 import qilin.util.graph.ConcurrentDirectedGraphImpl;
 import qilin.util.graph.Reachability;
-import soot.*;
+import soot.RefLikeType;
+import soot.SootMethod;
+import soot.Type;
+import soot.Value;
 import soot.jimple.AssignStmt;
 import soot.jimple.InstanceInvokeExpr;
 import soot.jimple.InvokeExpr;
 import soot.jimple.Stmt;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 import static qilin.util.ANSIColor.color;
diff --git a/qilin.pta/src/qilin/pta/toolkits/zipper/flowgraph/ObjectFlowGraph.java b/qilin.pta/src/qilin/pta/toolkits/zipper/flowgraph/ObjectFlowGraph.java
index 2be92fd..3d964f8 100644
--- a/qilin.pta/src/qilin/pta/toolkits/zipper/flowgraph/ObjectFlowGraph.java
+++ b/qilin.pta/src/qilin/pta/toolkits/zipper/flowgraph/ObjectFlowGraph.java
@@ -2,13 +2,24 @@
 
 import qilin.core.PTA;
 import qilin.core.builder.MethodNodeFactory;
-import qilin.core.pag.*;
+import qilin.core.pag.ContextField;
+import qilin.core.pag.ContextVarNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.Node;
+import qilin.core.pag.ValNode;
+import qilin.core.pag.VarNode;
 import qilin.pta.toolkits.zipper.Global;
 import soot.SootMethod;
 import soot.Value;
-import soot.jimple.*;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.Stmt;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 
 public class ObjectFlowGraph implements IObjectFlowGraph {
     private final PTA pta;
diff --git a/qilin.pta/src/qilin/pta/tools/BasePTA.java b/qilin.pta/src/qilin/pta/tools/BasePTA.java
index af437b6..8191c3a 100644
--- a/qilin.pta/src/qilin/pta/tools/BasePTA.java
+++ b/qilin.pta/src/qilin/pta/tools/BasePTA.java
@@ -25,7 +25,6 @@
 import qilin.core.solver.Propagator;
 import qilin.core.solver.Solver;
 import qilin.stat.IEvaluator;
-import qilin.stat.PTAEvaluator;
 import qilin.stat.SimplifiedEvaluator;
 import qilin.util.PTAUtils;
 
diff --git a/qilin.pta/src/qilin/pta/tools/DebloatedPTA.java b/qilin.pta/src/qilin/pta/tools/DebloatedPTA.java
index 4062da8..506b7b1 100644
--- a/qilin.pta/src/qilin/pta/tools/DebloatedPTA.java
+++ b/qilin.pta/src/qilin/pta/tools/DebloatedPTA.java
@@ -18,7 +18,9 @@
 
 package qilin.pta.tools;
 
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.CallSite;
+import qilin.core.pag.Node;
 import qilin.core.sets.PointsToSet;
 import qilin.core.solver.Propagator;
 import qilin.parm.select.CtxSelector;
@@ -27,14 +29,19 @@
 import qilin.pta.PTAConfig;
 import qilin.pta.toolkits.common.DebloatedOAG;
 import qilin.pta.toolkits.common.OAG;
+import qilin.pta.toolkits.conch.Conch;
 import qilin.pta.toolkits.debloaterx.CollectionHeuristic;
 import qilin.pta.toolkits.debloaterx.DebloaterX;
-import qilin.pta.toolkits.conch.Conch;
 import qilin.stat.IEvaluator;
 import qilin.util.Stopwatch;
-import soot.*;
-
-import java.util.*;
+import soot.Context;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.SootField;
+import soot.SootMethod;
+
+import java.util.HashSet;
+import java.util.Set;
 
 /*
  * refer to "Context Debloating for Object-Sensitive Pointer Analysis" (ASE'21)
diff --git a/qilin.pta/src/qilin/pta/tools/PartialCallSiteSensPTA.java b/qilin.pta/src/qilin/pta/tools/PartialCallSiteSensPTA.java
index c9233e9..4057712 100644
--- a/qilin.pta/src/qilin/pta/tools/PartialCallSiteSensPTA.java
+++ b/qilin.pta/src/qilin/pta/tools/PartialCallSiteSensPTA.java
@@ -18,16 +18,34 @@
 
 package qilin.pta.tools;
 
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.VarNode;
 import qilin.parm.ctxcons.CallsiteCtxConstructor;
 import qilin.parm.heapabst.AllocSiteAbstractor;
 import qilin.parm.heapabst.HeuristicAbstractor;
-import qilin.parm.select.*;
+import qilin.parm.select.CtxSelector;
+import qilin.parm.select.HeuristicSelector;
+import qilin.parm.select.PartialVarSelector;
+import qilin.parm.select.PipelineSelector;
 import qilin.pta.PTAConfig;
 import qilin.util.PTAUtils;
 import qilin.util.Stopwatch;
-import soot.*;
-import soot.jimple.*;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.RefLikeType;
+import soot.SootMethod;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.Stmt;
 import soot.util.queue.QueueReader;
 
 import java.util.HashSet;
diff --git a/qilin.pta/src/qilin/pta/tools/PartialObjSensPTA.java b/qilin.pta/src/qilin/pta/tools/PartialObjSensPTA.java
index 4179803..f1ee485 100644
--- a/qilin.pta/src/qilin/pta/tools/PartialObjSensPTA.java
+++ b/qilin.pta/src/qilin/pta/tools/PartialObjSensPTA.java
@@ -18,7 +18,13 @@
 
 package qilin.pta.tools;
 
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.PAG;
+import qilin.core.pag.VarNode;
 import qilin.parm.ctxcons.ObjCtxConstructor;
 import qilin.parm.heapabst.AllocSiteAbstractor;
 import qilin.parm.heapabst.HeuristicAbstractor;
@@ -29,8 +35,17 @@
 import qilin.pta.PTAConfig;
 import qilin.util.PTAUtils;
 import qilin.util.Stopwatch;
-import soot.*;
-import soot.jimple.*;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.RefLikeType;
+import soot.SootMethod;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.Stmt;
 import soot.util.queue.QueueReader;
 
 import java.util.HashSet;
diff --git a/qilin.pta/src/qilin/pta/tools/ZipperPTA.java b/qilin.pta/src/qilin/pta/tools/ZipperPTA.java
index d9a8573..410e5bf 100644
--- a/qilin.pta/src/qilin/pta/tools/ZipperPTA.java
+++ b/qilin.pta/src/qilin/pta/tools/ZipperPTA.java
@@ -18,7 +18,12 @@
 
 package qilin.pta.tools;
 
-import qilin.core.pag.*;
+import qilin.core.pag.AllocNode;
+import qilin.core.pag.FieldRefNode;
+import qilin.core.pag.LocalVarNode;
+import qilin.core.pag.MethodPAG;
+import qilin.core.pag.Node;
+import qilin.core.pag.VarNode;
 import qilin.parm.ctxcons.CtxConstructor;
 import qilin.parm.heapabst.AllocSiteAbstractor;
 import qilin.parm.heapabst.HeuristicAbstractor;
@@ -29,8 +34,17 @@
 import qilin.pta.PTAConfig;
 import qilin.pta.toolkits.zipper.Main;
 import qilin.util.Stopwatch;
-import soot.*;
-import soot.jimple.*;
+import soot.Local;
+import soot.MethodOrMethodContext;
+import soot.RefLikeType;
+import soot.SootMethod;
+import soot.Unit;
+import soot.Value;
+import soot.jimple.AssignStmt;
+import soot.jimple.InstanceInvokeExpr;
+import soot.jimple.InvokeExpr;
+import soot.jimple.NullConstant;
+import soot.jimple.Stmt;
 import soot.util.queue.QueueReader;
 
 import java.util.HashSet;
diff --git a/qilin.pta/test/qilin/test/util/JunitTests.java b/qilin.pta/test/qilin/test/util/JunitTests.java
index fb341a6..d3329f4 100644
--- a/qilin.pta/test/qilin/test/util/JunitTests.java
+++ b/qilin.pta/test/qilin/test/util/JunitTests.java
@@ -38,6 +38,7 @@
 public abstract class JunitTests {
     protected static String appPath, jrePath, refLogPath;
     protected static boolean isSetUp = false;
+
     @BeforeClass
     public static void setUp() throws IOException {
         if (isSetUp) {
diff --git a/qilin.util/src/qilin/util/DataFactory.java b/qilin.util/src/qilin/util/DataFactory.java
index e9db175..fd891e4 100644
--- a/qilin.util/src/qilin/util/DataFactory.java
+++ b/qilin.util/src/qilin/util/DataFactory.java
@@ -18,7 +18,12 @@
 
 package qilin.util;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 public class DataFactory {
     public static <T> List<T> createList() {
diff --git a/qilin.util/src/qilin/util/Util.java b/qilin.util/src/qilin/util/Util.java
index bb94314..325c959 100644
--- a/qilin.util/src/qilin/util/Util.java
+++ b/qilin.util/src/qilin/util/Util.java
@@ -21,7 +21,11 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.io.*;
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
 import java.util.Map;
 import java.util.Set;
 import java.util.regex.Pattern;
diff --git a/qilin.util/src/qilin/util/graph/DirectedGraphImpl.java b/qilin.util/src/qilin/util/graph/DirectedGraphImpl.java
index c56e752..95e5626 100644
--- a/qilin.util/src/qilin/util/graph/DirectedGraphImpl.java
+++ b/qilin.util/src/qilin/util/graph/DirectedGraphImpl.java
@@ -18,7 +18,12 @@
 
 package qilin.util.graph;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 
 public class DirectedGraphImpl<N> implements DirectedGraph<N> {
     protected Set<N> nodes;
diff --git a/qilin.util/src/qilin/util/graph/Reachability.java b/qilin.util/src/qilin/util/graph/Reachability.java
index 9e7b888..75dc177 100644
--- a/qilin.util/src/qilin/util/graph/Reachability.java
+++ b/qilin.util/src/qilin/util/graph/Reachability.java
@@ -18,7 +18,12 @@
 
 package qilin.util.graph;
 
-import java.util.*;
+import java.util.ArrayDeque;
+import java.util.Deque;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 
 public class Reachability<N> {
     private final DirectedGraph<N> graph;
diff --git a/qilin.util/src/qilin/util/graph/SCCMergedGraph.java b/qilin.util/src/qilin/util/graph/SCCMergedGraph.java
index 2be136e..6856417 100644
--- a/qilin.util/src/qilin/util/graph/SCCMergedGraph.java
+++ b/qilin.util/src/qilin/util/graph/SCCMergedGraph.java
@@ -18,7 +18,11 @@
 
 package qilin.util.graph;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 
 public class SCCMergedGraph<N> implements DirectedGraph<MergedNode<N>> {
     private Set<MergedNode<N>> nodes;
diff --git a/qilin.util/src/qilin/util/graph/StronglyConnectedComponents.java b/qilin.util/src/qilin/util/graph/StronglyConnectedComponents.java
index 3b25644..521da75 100644
--- a/qilin.util/src/qilin/util/graph/StronglyConnectedComponents.java
+++ b/qilin.util/src/qilin/util/graph/StronglyConnectedComponents.java
@@ -18,7 +18,11 @@
 
 package qilin.util.graph;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Stack;
 
 public class StronglyConnectedComponents<N> {
     private final List<List<N>> componentList;
diff --git a/qilin.util/src/qilin/util/graph/TopologicalSorter.java b/qilin.util/src/qilin/util/graph/TopologicalSorter.java
index c257438..85d2db3 100644
--- a/qilin.util/src/qilin/util/graph/TopologicalSorter.java
+++ b/qilin.util/src/qilin/util/graph/TopologicalSorter.java
@@ -18,7 +18,11 @@
 
 package qilin.util.graph;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Set;
 
 public class TopologicalSorter<N> {
     private DirectedGraph<N> graph;
diff --git a/qilin.util/src/qilin/util/queue/UniqueQueue.java b/qilin.util/src/qilin/util/queue/UniqueQueue.java
index 3aaa689..4ef5901 100644
--- a/qilin.util/src/qilin/util/queue/UniqueQueue.java
+++ b/qilin.util/src/qilin/util/queue/UniqueQueue.java
@@ -18,7 +18,12 @@
 
 package qilin.util.queue;
 
-import java.util.*;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.Queue;
+import java.util.Set;
 
 public class UniqueQueue<T> implements Queue<T> {
     private final Set<T> set;