NO Solver Timeout: 4 Global Timeout: 300 No parsing errors! Init Location: 0 Transitions: undef1}> undef8, y_6^0 -> (1 + y_6^0)}> undef18}> undef22}> (1 + x_5^0)}> Fresh variables: undef1, undef8, undef18, undef22, Undef variables: undef1, undef8, undef18, undef22, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: (1 + y_6^0)}> undef22, x_5^0 -> (1 + x_5^0)}> Fresh variables: undef1, undef8, undef18, undef22, Undef variables: undef1, undef8, undef18, undef22, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0, __disjvr_0^0 Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 Map Locations to Subgraph: ( 0 , 0 ) ( 1 , 1 ) ( 2 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.003486 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001285s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004598s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008439s Time used: 0.008301 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003619s Time used: 0.003225 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008160s Time used: 0.007839 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.016103s Time used: 0.016102 LOG: SAT solveNonLinear - Elapsed time: 0.024263s Cost: 1; Total time: 0.023941 Failed at location 1: y_6^0 <= x_5^0 Before Improving: Quasi-invariant at l1: y_6^0 <= x_5^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002742s Remaining time after improvement: 0.999179 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l1: y_6^0 <= x_5^0 [ 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: 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... > It's unfeasible. Removing transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: 1 + y_6^0, rest remain the same}> New Graphs: Calling Safety with literal y_6^0 <= x_5^0 and entry LOG: CALL check - Post:y_6^0 <= x_5^0 - Process 1 * Exit transition: * Postcondition : y_6^0 <= x_5^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000235s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000262s INVARIANTS: 1: Quasi-INVARIANTS to narrow Graph: 1: y_6^0 <= x_5^0 , Narrowing transition: 1 + y_6^0, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0, __disjvr_0^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000612s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003429s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006677s Time used: 0.006531 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003651s Time used: 0.003249 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001497s Time used: 4.00116 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.007859s Time used: 4.00053 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003595s Time used: 1.00002 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015533s Time used: 0.009234 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.014529s Time used: 0.014527 LOG: SAT solveNonLinear - Elapsed time: 0.030062s Cost: 1; Total time: 0.023761 Termination implied by a set of invariant(s): Invariant at l1: x_5^0 <= y_6^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 - y_6^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000541s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004967s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007141s Time used: 0.007014 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004200s Time used: 0.00375 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002449s Time used: 4.00204 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.014216s Time used: 4.00072 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003671s Time used: 1.00001 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015916s Time used: 0.009209 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.015813s Time used: 0.015811 LOG: SAT solveNonLinear - Elapsed time: 0.031729s Cost: 1; Total time: 0.02502 Termination implied by a set of invariant(s): Invariant at l1: x_5^0 <= y_6^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 - x_5^0 - y_6^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000672s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.007846s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006513s Time used: 0.006368 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004687s Time used: 0.004218 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.010415s Time used: 4.01001 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.014187s Time used: 4.0009 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004544s Time used: 1.00001 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.017325s Time used: 0.010887 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.018433s Time used: 0.018432 LOG: SAT solveNonLinear - Elapsed time: 0.035758s Cost: 1; Total time: 0.029319 Termination implied by a set of invariant(s): Invariant at l1: x_5^0 <= 1 + y_6^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 - x_5^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000735s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.008462s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009697s Time used: 0.009372 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005091s Time used: 0.004548 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001085s Time used: 4.00068 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.012589s Time used: 4.00062 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003903s Time used: 1.00001 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.020618s Time used: 0.010524 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.020674s Time used: 0.020671 LOG: SAT solveNonLinear - Elapsed time: 0.041292s Cost: 1; Total time: 0.031195 Quasi-ranking function: 50000 + __disjvr_0^0 - x_5^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000778s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.009634s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009711s Time used: 0.009376 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005204s Time used: 0.004662 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002638s Time used: 4.00225 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.005652s Time used: 4.00122 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003910s Time used: 1.00003 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.019768s Time used: 0.013515 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.017083s Time used: 0.017081 LOG: SAT solveNonLinear - Elapsed time: 0.036851s Cost: 1; Total time: 0.030596 Termination implied by a set of invariant(s): Invariant at l1: x_5^0 <= y_6^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 + __disjvr_0^0 - y_6^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000855s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.011780s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011110s Time used: 0.010785 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007191s Time used: 0.006692 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.011377s Time used: 4.01086 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.017832s Time used: 4.00103 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.005772s Time used: 1.00003 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.020354s Time used: 0.013347 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.020442s Time used: 0.020441 LOG: SAT solveNonLinear - Elapsed time: 0.040797s Cost: 1; Total time: 0.033788 Quasi-ranking function: 50000 - __disjvr_0^0 - x_5^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000909s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.010593s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.010293s Time used: 0.009895 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006881s Time used: 0.006338 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002726s Time used: 4.00227 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.005330s Time used: 4.00087 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004568s Time used: 1.00001 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.020715s Time used: 0.014716 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.020279s Time used: 0.020277 LOG: SAT solveNonLinear - Elapsed time: 0.040994s Cost: 1; Total time: 0.034993 Termination implied by a set of invariant(s): Invariant at l1: x_5^0 <= y_6^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 - __disjvr_0^0 - y_6^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000968s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.012864s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.010429s Time used: 0.010064 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007442s Time used: 0.006888 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.008238s Time used: 4.0012 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.006814s Time used: 4.00109 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003988s Time used: 1.00015 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.020525s Time used: 0.013703 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.021804s Time used: 0.021803 LOG: SAT solveNonLinear - Elapsed time: 0.042330s Cost: 1; Total time: 0.035506 Termination implied by a set of invariant(s): Invariant at l1: x_5^0 <= y_6^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 + 2*__disjvr_0^0 - x_5^0 - y_6^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001093s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.016254s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.012004s Time used: 0.01161 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007354s Time used: 0.006895 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.009649s Time used: 4.00133 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002767s Time used: 4.00088 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004060s Time used: 1.00006 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.022593s Time used: 0.016081 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.024207s Time used: 0.024205 LOG: SAT solveNonLinear - Elapsed time: 0.046800s Cost: 1; Total time: 0.040286 Termination implied by a set of invariant(s): Invariant at l1: x_5^0 <= y_6^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 - __disjvr_0^0 - x_5^0 - y_6^0 New Graphs: Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001208s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.016918s Trying to remove transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.013756s Time used: 0.013332 Trying to remove transition: 1 + y_6^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008230s Time used: 0.007748 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.008285s Time used: 4.0013 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.003932s Time used: 4.00094 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003926s Time used: 1.00006 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.021896s Time used: 0.014888 Proving non-termination of subgraph 1 Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0, __disjvr_0^0 Checking that every undef value has an assignment... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001400s Checking conditional non-termination of SCC {l1}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 5.002249s Time used: 5.00215 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 5.005744s Time used: 5.001 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 5.011556s Time used: 5.00117 > Checking if the negation of the conditions of every pending exit is quasi-invariant... NO Proving non-termination of subgraph 1 Transitions: 1 + y_6^0, rest remain the same}> undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Variables: __disjvr_0^0, x_5^0, y_6^0 Checking that every undef value has an assignment... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001288s Checking conditional non-termination of SCC {l1}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.339490s Time used: 1.33824 Improving Solution with cost 43 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 1.000758s Time used: 1.00075 LOG: SAT solveNonLinear - Elapsed time: 2.340248s Cost: 43; Total time: 2.33899 Failed at location 1: x_5^0 <= __disjvr_0^0 Before Improving: Quasi-invariant at l1: x_5^0 <= __disjvr_0^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.015381s Remaining time after improvement: 0.987992 Minimizing number of undef constraints... LOG: CALL solveNonLinear LOG: RETURN solveNonLinear - Elapsed time: 0.023984s Number of undef constraints reduced! Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l1: x_5^0 <= __disjvr_0^0 Strengthening and disabling EXIT transitions... Closed exits from l1: 33 Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef22, x_5^0 -> 1 + x_5^0, rest remain the same}> Checking conditional non-termination of SCC {l1}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.193871s Time used: 0.193203 Improving Solution with cost 12 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.307904s Time used: 0.307901 LOG: SAT solveNonLinear - Elapsed time: 0.501775s Cost: 12; Total time: 0.501104 Failed at location 1: __disjvr_0^0 <= 0 Before Improving: Quasi-invariant at l1: __disjvr_0^0 <= 0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.018481s Remaining time after improvement: 0.994216 Minimizing number of undef constraints... LOG: CALL solveNonLinear LOG: RETURN solveNonLinear - Elapsed time: 0.011226s Number of undef constraints reduced! Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l1: __disjvr_0^0 <= 0 Strengthening and disabling EXIT transitions... Closed exits from l1: 17 Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening exit transition (result): Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> Checking conditional non-termination of SCC {l1}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.029540s Time used: 0.029282 Improving Solution with cost 3 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 1.024566s Time used: 1.02455 LOG: SAT solveNonLinear - Elapsed time: 1.054106s Cost: 3; Total time: 1.05383 Failed at location 1: 0 <= __disjvr_0^0 + x_5^0 Before Improving: Quasi-invariant at l1: 0 <= __disjvr_0^0 + x_5^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.009716s Remaining time after improvement: 0.99683 Minimizing number of undef constraints... LOG: CALL solveNonLinear LOG: RETURN solveNonLinear - Elapsed time: 0.005949s Number of undef constraints reduced! Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l1: 0 <= __disjvr_0^0 + x_5^0 Strengthening and disabling EXIT transitions... Closed exits from l1: 5 Strengthening exit transition (result): Strengthening exit transition (result): Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> Checking conditional non-termination of SCC {l1}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.012821s Time used: 0.012661 Improving Solution with cost 2 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 1.008426s Time used: 1.00842 LOG: SAT solveNonLinear - Elapsed time: 1.021247s Cost: 2; Total time: 1.02108 Failed at location 1: 1 + __disjvr_0^0 <= x_5^0 + y_6^0 Before Improving: Quasi-invariant at l1: 1 + __disjvr_0^0 <= x_5^0 + y_6^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.023420s Remaining time after improvement: 0.997793 Minimizing number of undef constraints... LOG: CALL solveNonLinear LOG: RETURN solveNonLinear - Elapsed time: 0.004596s Number of undef constraints reduced! Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l1: 1 + __disjvr_0^0 <= x_5^0 + y_6^0 Strengthening and disabling EXIT transitions... Closed exits from l1: 1 Strengthening exit transition (result): Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + y_6^0, rest remain the same}> Checking conditional non-termination of SCC {l1}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 5.007774s Time used: 5.00371 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 5.006044s Time used: 5.00321 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 5.032578s Time used: 5.00407 > Checking if the negation of the conditions of every pending exit is quasi-invariant... YES Calling reachability with... Transition: Conditions: 1 + x_5^0 <= y_6^0, __disjvr_0^0 + x_5^0 <= 50000, 50001 <= __disjvr_0^0 + x_5^0 + y_6^0, 50001 <= __disjvr_0^0 + y_6^0, x_5^0 <= 50000 + __disjvr_0^0, 50001 + __disjvr_0^0 <= y_6^0, 50001 + 2*__disjvr_0^0 <= x_5^0 + y_6^0, x_5^0 <= 50000, 50001 <= x_5^0 + y_6^0, 50001 <= y_6^0, x_5^0 <= __disjvr_0^0, __disjvr_0^0 <= 0, 0 <= __disjvr_0^0 + x_5^0, 1 + __disjvr_0^0 <= x_5^0 + y_6^0, OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: __disjvr_0^0 <= 0, x_5^0 <= __disjvr_0^0, 0 <= __disjvr_0^0 + x_5^0, 1 + __disjvr_0^0 <= x_5^0 + y_6^0, 1 + x_5^0 <= y_6^0, 50001 + __disjvr_0^0 <= y_6^0, 50001 <= __disjvr_0^0 + x_5^0 + y_6^0, 50001 <= __disjvr_0^0 + y_6^0, 50001 + 2*__disjvr_0^0 <= x_5^0 + y_6^0, 50001 <= x_5^0 + y_6^0, 50001 <= y_6^0, __disjvr_0^0 + x_5^0 <= 50000, x_5^0 <= 50000, OPEN EXITS: > Conditions are reachable! Program does NOT terminate