NO Solver Timeout: 4 Global Timeout: 300 Maximum number of concurrent processes: 900 ******************************************************************************************* *********************** UNPROCESSED TRANSITION SYSTEMS PER FUNCTION *********************** ******************************************************************************************* List of LLVMGraphs + assumeNodes + staticAssertNodes [1] : +++++++++++++++++++++++++++++++ main +++++++++++++++++++++++++++++++ + + Init Location: 0 Transitions: 0, main_i -> ¿functionCall(__VERIFIER_nondet_int)}> 5))> 5)> (main_i - 1)}> 0}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: Accepting locations: Asserts: + Assume Nodes [0]: ++++++++++++++++++++++++++++++++++++++++++++++++ + Static Assert Nodes [0]: +++++++++++++++++++++++++++++++++++++++++ + After preprocess (paralelization): ++++++++++++++++++++++++++++++ Init Location: 0 Transitions: 0}> ¿functionCall(__VERIFIER_nondet_int)}> varCall_1}> 5)> 5))> (main_i - 1)}> 0}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: 8, Accepting locations: Asserts: + + +++++++++++++++++++++++++++++++ main +++++++++++++++++++++++++++++++ Function Return and Parameters Information [2 functions]: function name: __VERIFIER_nondet_int [1 return + 0 parameters] demangled: __VERIFIER_nondet_int __VERIFIER_nondet_int__func_return_ [function result] : int function name: main [1 return + 0 parameters] demangled: main main__func_return_ [function result] : int AST Ident Scanner Information [3 idents]: __VERIFIER_nondet_int | function | [integer, ()] | | main | function | [integer, ()] | i | local variable | integer | | Main function: main Preprocessed LLVMGraph Init Location: 0 Transitions: 5) /\ (main_i < 10), par{main_i -> (main_i - 1)}> 5) /\ not((main_i < 10))> 5))> Fresh variables: undef2, Undef variables: undef2, Abstraction variables: Exit nodes: 8, Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: -1 + main_i, rest remain the same}> Variables: main_i Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 Map Locations to Subgraph: ( 0 , 0 ) ( 2 , 1 ) ( 8 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.002149 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000607s Ranking function: -6 + main_i New Graphs: Transitions: Variables: main_i > No variable changes in termination graph. Checking conditional unfeasibility... Calling Safety with literal main_i <= 9 and entry LOG: CALL check - Post:main_i <= 9 - Process 1 * Exit transition: * Postcondition : main_i <= 9 Quasi-invariants: Location 2: main_i <= 9 ; LOG: CALL check - Post:main_i <= 9 - Process 2 * Exit transition: * Postcondition : main_i <= 9 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000204s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000242s LOG: NarrowEntry size 1 It's unfeasible. Removing transition: -1 + main_i, rest remain the same}> Narrowing transition: LOG: Narrow transition size 1 ENTRIES: END ENTRIES: GRAPH: END GRAPH: EXIT: POST: main_i <= 9 LOG: Try proving POST [997 : 999] [997 : 1000] [997 : 1001] LOG: Postcondition is not implied - no solution > Postcondition is not implied! LOG: RETURN check - Elapsed time: 4.114325s [997 : 1002] [997 : 1006] Successful child: 1002 Program does NOT terminate