NO Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: undef70}> (1 + i6^0), tmp___09^0 -> undef108}> 0, length5^0 -> (0 + undef111), s^0 -> undef111, tmp^0 -> undef113}> Fresh variables: undef70, undef108, undef111, undef113, Undef variables: undef70, undef108, undef111, undef113, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: (1 + i6^0)}> Fresh variables: undef70, undef108, undef111, undef113, Undef variables: undef70, undef108, undef111, undef113, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: 1 + i6^0, rest remain the same}> Variables: i6^0, length5^0 Graph 2: Transitions: Variables: Graph 3: Transitions: Variables: Graph 4: Transitions: Variables: Graph 5: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 Graph 3 Graph 4 Graph 5 Map Locations to Subgraph: ( 0 , 0 ) ( 2 , 4 ) ( 4 , 5 ) ( 5 , 1 ) ( 8 , 3 ) ( 10 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.002211 Checking conditional termination of SCC {l5}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000809s Ranking function: -1 - i6^0 + length5^0 New Graphs: Proving termination of subgraph 2 Checking unfeasibility... Time used: 0.001798 > 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 Postcodition moved up: 1 <= 0 LOG: Try proving POST Postcondition: 1 <= 0 LOG: CALL check - Post:1 <= 0 - Process 2 * Exit transition: * Postcondition : 1 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000443s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000547s LOG: NarrowEntry size 1 Narrowing transition: 1 + i6^0, rest remain the same}> LOG: Narrow transition size 1 ENTRIES: END ENTRIES: GRAPH: 1 + i6^0, rest remain the same}> END GRAPH: EXIT: POST: 1 <= 0 LOG: Try proving POST Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007011s Time used: 0.006866 Improving Solution with cost 51 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 1.016216s Time used: 1.01616 LOG: SAT solveNonLinear - Elapsed time: 1.023227s Cost: 51; Total time: 1.02303 Failed at location 5: 1 + length5^0 <= i6^0 Before Improving: Quasi-invariant at l5: 1 + length5^0 <= i6^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004341s Remaining time after improvement: 0.998864 Some transition disabled by a set of quasi-invariant(s): Quasi-invariant at l5: 1 + length5^0 <= i6^0 LOG: NEXT CALL check - disable LOG: CALL check - Post:1 + length5^0 <= i6^0 - Process 3 * Exit transition: * Postcondition : 1 + length5^0 <= i6^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000621s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000728s Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.029227s Time used: 0.029041 Improving Solution with cost 51 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 1.000532s Time used: 1.00049 LOG: SAT solveNonLinear - Elapsed time: 1.029759s Cost: 51; Total time: 1.02953 Failed at location 5: length5^0 <= i6^0 Before Improving: Quasi-invariant at l5: length5^0 <= i6^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.006178s Remaining time after improvement: 0.998759 Some transition disabled by a set of quasi-invariant(s): Quasi-invariant at l5: length5^0 <= i6^0 LOG: NEXT CALL check - disable LOG: CALL check - Post:length5^0 <= i6^0 - Process 4 * Exit transition: * Postcondition : length5^0 <= i6^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000736s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000853s Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.114253s Time used: 0.114027 Improving Solution with cost 51 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.886315s Time used: 0.886273 LOG: SAT solveNonLinear - Elapsed time: 1.000568s Cost: 51; Total time: 1.0003 Failed at location 5: length5^0 <= 0 Before Improving: Quasi-invariant at l5: 0 <= 1 + i6^0 Quasi-invariant at l5: 0 <= i6^0 Quasi-invariant at l5: length5^0 <= 0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.008171s Remaining time after improvement: 0.998466 Some transition disabled by a set of quasi-invariant(s): Quasi-invariant at l5: 0 <= 1 + i6^0 Quasi-invariant at l5: 0 <= i6^0 Quasi-invariant at l5: length5^0 <= 0 LOG: NEXT CALL check - disable LOG: CALL check - Post:length5^0 <= 0 - Process 5 * Exit transition: * Postcondition : length5^0 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000765s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000884s LOG: Postcondition is not implied - no solution > Postcondition is not implied! LOG: RETURN check - Elapsed time: 3.084014s Cannot prove unreachability Proving non-termination of subgraph 2 Transitions: Variables: Checking conditional non-termination of SCC {l10}... > No exit transition to close. Calling reachability with... Transition: Conditions: OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: length5^0 <= i6^0, OPEN EXITS: > Conditions are reachable! Program does NOT terminate