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))> 0)> 0))> (main_i - 1)}> (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)))> 0)> 0))> (main_i - 1)}> (main_i + 1)}> 0}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: 12, 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 <= 5) /\ (main_i > 0) /\ not(((main_i - 1) < 0)), par{main_i -> (main_i - 1)}> = ~(5)) /\ (main_i <= 5) /\ not((main_i > 0)) /\ (main_i < 0), par{main_i -> (main_i + 1)}> = ~(5)) /\ (main_i <= 5) /\ not((main_i > 0)) /\ not((main_i < 0))> = ~(5)) /\ not((main_i <= 5))> = ~(5)))> Fresh variables: undef2, Undef variables: undef2, Abstraction variables: Exit nodes: 12, Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: -1 + main_i, rest remain the same}> 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 ) ( 12 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.001747 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000466s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.006757s [5838 : 5840] [5838 : 5841] Successful child: 5841 Ranking function: -main_i Ranking function and negation of Quasi-Invariant applied New Graphs: Transitions: -1 + main_i, rest remain the same}> Variables: main_i Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000995s Ranking function: -1 + main_i New Graphs: Transitions: Variables: main_i > No variable changes in termination graph. Checking conditional unfeasibility... Termination failed. Trying to show unreachability... Proving unreachability of entry: LOG: CALL check - Post:1 <= 0 - Process 1 * Exit transition: * Postcondition : 1 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000323s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000375s Cannot prove unreachability [5838 : 5845] [5838 : 5849] Successful child: 5845 Program does NOT terminate