[ValueError@identity_elimination.py:226] ValueError: At least two variables in the identity group {eax_1#5 (type: char * aliased: False), eax_1#7 (type: char * aliased: False), ebx#0 (type: char * aliased: False), ebx#2 (type: char * aliased: False), eax_1#4 (type: char * aliased: False)} have out degree zero, namely eax_1#5 and eax_1#4, i.e., these set of vertices is not an identity group

[ValueError@identity_elimination.py:226] ValueError: At least two variables in the identity group {eax_1#5 (type: char * aliased: False), eax_1#7 (type: char * aliased: False), ebx#0 (type: char * aliased: False), ebx#2 (type: char * aliased: False), eax_1#4 (type: char * aliased: False)} have out degree zero, namely eax_1#5 and eax_1#4, i.e., these set of vertices is not an identity group #637