digraph iCFG { 4 [label="4: DeclStmt \n *&option1:int =(1 << 0) [line 16]\n NULLIFY(&option1,false); [line 16]\n " shape="box"] 4 -> 3 ; 3 [label="3: DeclStmt \n *&option2:int =(1 << 1) [line 17]\n NULLIFY(&option2,false); [line 17]\n APPLY_ABSTRACTION; [line 17]\n " shape="box"] 3 -> 2 ; 2 [label="2: Exit main \n " color=yellow style=filled] 1 [label="1: Start main\nFormals: \nLocals: option2:int option1:int \n DECLARE_LOCALS(&return,&option2,&option1); [line 15]\n NULLIFY(&option1,false); [line 15]\n NULLIFY(&option2,false); [line 15]\n " color=yellow style=filled] 1 -> 4 ; }