Error initializing DefaultRoutingSearchParameters: default '0.5' for field operations_research.sat.SatParameters.clause_cleanup_ratio of type 1

[Jrgsto]

What version of OR-Tools and what language are you using?
Version: 9.11.4210
Language: Python

Which solver are you using (e.g. CP-SAT, Routing Solver, GLOP, BOP, Gurobi)
Routing Solver, CP-SAT,

What operating system (Linux, Windows, ...) and version?
MacOs (but all happening in a docker container with conjunction with django)

What did you do?
It's not easy to reproduce since it only happened for me in certain conditions:

• Dockerized container with python 3.11
• Using Django (5.0.8) plus protobuf (5.26.1) and ortools
  More detailed epxlanation
  I am able to successfully build the container and can get into it. If I run plain python and do the following it all works fine
  python -c "from ortools.constraint_solver import pywrapcp; search_parameters = pywrapcp.DefaultRoutingSearchParameters(); print(search_parameters)"

However if I have run it within the code itself or within the Djangp shell (python manage.py shell) then I get this error
Error initializing DefaultRoutingSearchParameters: Couldn't build proto file into descriptor pool: Invalid default '0.5' for field operations_research.sat.SatParameters.clause_cleanup_ratio of type 1

Here is a print statemant

Python version: 3.11.10 (main, Oct 19 2024, 18:56:55) [GCC 12.2.0]
**pywrapcp:** 
<module 'ortools.constraint_solver.pywrapcp' from '/usr/local/lib/python3.11/site-packages/ortools/constraint_solver/pywrapcp.py'>
**Protobuf:** 
<module 'google.protobuf' from '/usr/local/lib/python3.11/site-packages/google/protobuf/__init__.py'>
**Dir in pywrapcp:**
['Assignment', 'AssignmentElement', 'BOOL_FALSE', 'BOOL_TRUE', 'BOOL_UNSPECIFIED', 'BaseLns', 'BaseObject', 'BooleanVar', 'BoundCost', 'ChangeValue', 'Constraint', 'Decision', 'DecisionBuilder', 'DefaultPhaseParameters', 'DefaultRoutingModelParameters', 'DefaultRoutingSearchParameters', 'Demon', 'DisjunctiveConstraint', 'FindErrorInRoutingSearchParameters', 'FirstSolutionStrategy', 'GlobalVehicleBreaksConstraint', 'IntExpr', 'IntVar', 'IntVarContainer', 'IntVarElement', 'IntVarIterator', 'IntVarLocalSearchFilter', 'IntVarLocalSearchOperator', 'IntervalVar', 'IntervalVarContainer', 'IntervalVarElement', 'LocalSearchFilter', 'LocalSearchFilterManager', 'LocalSearchMetaheuristic', 'LocalSearchOperator', 'NumericalRevInteger', 'OptimizeVar', 'Pack', 'PathOperator', 'PathsMetadata', 'PropagationBaseObject', 'PyConstraint', 'PyConstraintDemon', 'PyDecision', 'PyDecisionBuilder', 'PyDemon', 'RevBool', 'RevInteger', 'RoutingDimension', 'RoutingIndexManager', 'RoutingModel', 'RoutingModelVisitor', 'SearchLimit', 'SearchMonitor', 'SequenceVar', 'SequenceVarContainer', 'SequenceVarElement', 'SimpleBoundCosts', 'SolutionCollector', 'SolveModelWithSat', 'Solver', 'TypeIncompatibilityChecker', 'TypeRegulationsChecker', 'TypeRegulationsConstraint', 'TypeRequirementChecker', '_SwigNonDynamicMeta', '__builtin__', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__lshift__', '__name__', '__package__', '__spec__', '_pywrapcp', '_swig_add_metaclass', '_swig_python_version_info', '_swig_repr', '_swig_setattr_nondynamic_class_variable', '_swig_setattr_nondynamic_instance_variable', 'cvar', 'weakref']
**Accessing DefaultRoutingSearchParameters via pywrapcp.DefaultRoutingSearchParameters():**
Error initializing DefaultRoutingSearchParameters: Couldn't build proto file into descriptor pool: Invalid default '0.5' for field operations_research.sat.SatParameters.clause_cleanup_ratio of type 1

What did you expect to see
I would expect to just initialize the DefaultRoutingSearchParameters with its default parameter

What did you see instead?
Error initializing DefaultRoutingSearchParameters: Couldn't build proto file into descriptor pool: Invalid default '0.5' for field operations_research.sat.SatParameters.clause_cleanup_ratio of type 1

Make sure you include information that can help us debug (full error message, model Proto).
I am quiet inexperienced with it and I just really noticed that the only issue when this happened was within the Django context.

[Mizux]

seems routing and sat are out of sync, will take a look !

Thx for the report

[Jrgsto]

Just in case it helps here are details for the error message:

File "/usr/local/lib/python3.11/site-packages/ortools/constraint_solver/pywrapcp.py", line 4576, in DefaultRoutingSearchParameters
return _pywrapcp.DefaultRoutingSearchParameters()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/ortools/constraint_solver/routing_parameters_pb2.py", line 18, in
from ortools.sat import sat_parameters_pb2 as ortools_dot_sat_dot_sat__parameters__pb2
File "/usr/local/lib/python3.11/site-packages/ortools/sat/sat_parameters_pb2.py", line 17, in

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[Mizux]

Strange this field is an optional double since its infancy in v9.1...

or-tools/ortools/sat/sat_parameters.proto

Lines 160 to 163 in 86d4c54

	// During a cleanup, if clause_cleanup_target is 0, we will delete the
	// clause_cleanup_ratio of "deletable" clauses instead of aiming for a fixed
	// target of clauses to keep.
	optional double clause_cleanup_ratio = 190 [default = 0.5];

BTW your trace is full of strange character \x10\x03\x12!\n\x1d maybe you have an unsupported LOCALE set ?

[Jrgsto]

Strange this field is an optional double since its infancy in v9.1...

or-tools/ortools/sat/sat_parameters.proto

Lines 160 to 163 in 86d4c54

// During a cleanup, if clause_cleanup_target is 0, we will delete the
// clause_cleanup_ratio of "deletable" clauses instead of aiming for a fixed
// target of clauses to keep.
optional double clause_cleanup_ratio = 190 [default = 0.5];
BTW your trace is full of strange character \x10\x03\x12!\n\x1d maybe you have an unsupported LOCALE set ?

Thank you for taking care of that and for the hint of LOCALE set. I was not 100% why those characters are there, suspected something with locale set though.