NO Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: (0 + x_13^0)}> undef10, rt_11^0 -> (0 + st_17^0)}> undef19, nd_12^0 -> undef21, rv_18^0 -> undef24}> undef38, nd_12^0 -> undef40, rv_18^0 -> (0 + undef47)}> undef67}> Fresh variables: undef10, undef19, undef21, undef24, undef28, undef38, undef40, undef47, undef67, Undef variables: undef10, undef19, undef21, undef24, undef28, undef38, undef40, undef47, undef67, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: undef10}> undef19}> undef38}> undef38}> Fresh variables: undef10, undef19, undef21, undef24, undef28, undef38, undef40, undef47, undef67, Undef variables: undef10, undef19, undef21, undef24, undef28, undef38, undef40, undef47, undef67, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: undef19, rest remain the same}> undef38, rest remain the same}> undef38, rest remain the same}> Variables: lt_15^0, y_16^0 Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 undef10, rest remain the same}> Map Locations to Subgraph: ( 0 , 0 ) ( 2 , 1 ) ( 3 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.005082 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001371s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.007024s Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.010102s Time used: 0.009697 Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009020s Time used: 0.008316 Trying to remove transition: undef19, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009728s Time used: 0.009042 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.024287s Time used: 0.023434 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.061904s Time used: 0.061895 LOG: SAT solveNonLinear - Elapsed time: 0.086190s Cost: 1; Total time: 0.085329 Failed at location 2: 1 + y_16^0 <= lt_15^0 Before Improving: Quasi-invariant at l2: 1 + y_16^0 <= lt_15^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.008729s Remaining time after improvement: 0.997621 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: 1 + y_16^0 <= lt_15^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> New Graphs: Calling Safety with literal 1 + y_16^0 <= lt_15^0 and entry LOG: CALL check - Post:1 + y_16^0 <= lt_15^0 - Process 1 * Exit transition: * Postcondition : 1 + y_16^0 <= lt_15^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000551s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000629s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: 1 + y_16^0 <= lt_15^0 , Narrowing transition: undef19, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef38, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef38, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: undef19, rest remain the same}> undef38, rest remain the same}> undef38, rest remain the same}> Variables: lt_15^0, y_16^0 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001275s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.006765s Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008722s Time used: 0.008204 Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009165s Time used: 0.0084 Trying to remove transition: undef19, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009766s Time used: 0.009005 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.022208s Time used: 0.02129 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.039251s Time used: 0.039244 LOG: SAT solveNonLinear - Elapsed time: 0.061458s Cost: 1; Total time: 0.060534 Failed at location 2: y_16^0 <= lt_15^0 Before Improving: Quasi-invariant at l2: y_16^0 <= lt_15^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.008900s Remaining time after improvement: 0.997511 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: y_16^0 <= lt_15^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> New Graphs: Calling Safety with literal y_16^0 <= lt_15^0 and entry LOG: CALL check - Post:y_16^0 <= lt_15^0 - Process 2 * Exit transition: * Postcondition : y_16^0 <= lt_15^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000618s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000697s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: y_16^0 <= lt_15^0 , Narrowing transition: undef19, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef38, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef38, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: undef19, rest remain the same}> undef38, rest remain the same}> undef38, rest remain the same}> Variables: lt_15^0, y_16^0 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001306s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.006783s Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008800s Time used: 0.00827 Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009220s Time used: 0.008398 Trying to remove transition: undef19, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009821s Time used: 0.009018 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.023353s Time used: 0.02255 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.025707s Time used: 4.02398 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.012125s Time used: 1.00081 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.030729s Time used: 0.016837 Proving non-termination of subgraph 1 Transitions: undef19, rest remain the same}> undef38, rest remain the same}> undef38, rest remain the same}> Variables: lt_15^0, y_16^0 Checking that every undef value has an assignment... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001411s Checking conditional non-termination of SCC {l2}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.051225s Time used: 0.05083 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.183684s Time used: 0.183673 LOG: SAT solveNonLinear - Elapsed time: 0.234909s Cost: 1; Total time: 0.234503 Failed at location 2: 1 + lt_15^0 <= y_16^0 Before Improving: Quasi-invariant at l2: 1 + lt_15^0 <= y_16^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.035445s Remaining time after improvement: 0.997336 Minimizing number of undef constraints... LOG: CALL solveNonLinear LOG: RETURN solveNonLinear - Elapsed time: 0.005395s Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: 1 + lt_15^0 <= y_16^0 Constraint over undef '1 + undef19 <= y_16^0' in transition: undef19, rest remain the same}> Constraint over undef 'undef38 <= lt_15^0' in transition: undef38, rest remain the same}> Constraint over undef 'undef38 <= lt_15^0' in transition: undef38, rest remain the same}> Strengthening and disabling EXIT transitions... Closed exits from l2: 1 Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef38, rest remain the same}> Calling reachability with... Transition: Conditions: 1 + lt_15^0 <= y_16^0, OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: 1 + lt_15^0 <= y_16^0, OPEN EXITS: > Conditions are reachable! Program does NOT terminate