NO Solver Timeout: 4 Global Timeout: 300 No parsing errors! Init Location: 0 Transitions: (1 + x^0), y^0 -> (1 + y^0)}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: (1 + x^0), y^0 -> (1 + y^0)}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Variables: x^0, y^0 Graph 2: Transitions: Variables: Graph 3: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 Graph 3 Map Locations to Subgraph: ( 0 , 0 ) ( 1 , 1 ) ( 2 , 3 ) ( 4 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.001545 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000377s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000974s Trying to remove transition: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003780s Time used: 0.003656 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001325s Time used: 4.00111 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.004046s Time used: 4.00087 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004078s Time used: 1.00021 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004736s Time used: 0.003381 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.005483s Time used: 0.005481 LOG: SAT solveNonLinear - Elapsed time: 0.010218s Cost: 1; Total time: 0.008862 Termination implied by a set of invariant(s): Invariant at l1: x^0 <= 1 + y^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 + x^0, y^0 -> 1 + y^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 + x^0, y^0 -> 1 + y^0, rest remain the same}> Quasi-ranking function: 50000 - 2*x^0 + y^0 New Graphs: Transitions: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Variables: x^0, y^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000287s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000962s Trying to remove transition: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003308s Time used: 0.003232 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.000268s Time used: 4.0001 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.018562s Time used: 4.00545 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.002504s Time used: 1.0004 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005840s Time used: 0.004299 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.008849s Time used: 0.008848 LOG: SAT solveNonLinear - Elapsed time: 0.014689s Cost: 1; Total time: 0.013147 Termination implied by a set of invariant(s): Invariant at l1: x^0 <= 1 + y^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 + x^0, y^0 -> 1 + y^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 + x^0, y^0 -> 1 + y^0, rest remain the same}> Quasi-ranking function: 50000 - x^0 New Graphs: Transitions: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Variables: x^0, y^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000330s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001229s Trying to remove transition: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004172s Time used: 0.004088 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.000953s Time used: 4.00078 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.009975s Time used: 4.00562 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.002915s Time used: 1.00049 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006372s Time used: 0.004735 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.008826s Time used: 0.008823 LOG: SAT solveNonLinear - Elapsed time: 0.015198s Cost: 1; Total time: 0.013558 Termination implied by a set of invariant(s): Invariant at l1: y^0 <= 1 + x^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 + x^0, y^0 -> 1 + y^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 + x^0, y^0 -> 1 + y^0, rest remain the same}> Quasi-ranking function: 50000 + x^0 - 2*y^0 New Graphs: Transitions: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Variables: x^0, y^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000417s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002070s Trying to remove transition: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004996s Time used: 0.0049 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.003292s Time used: 4.00311 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.004942s Time used: 4.0006 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.013027s Time used: 1.00051 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006717s Time used: 0.005172 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.010932s Time used: 0.01093 LOG: SAT solveNonLinear - Elapsed time: 0.017650s Cost: 1; Total time: 0.016102 Termination implied by a set of invariant(s): Invariant at l1: y^0 <= 1 + x^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 + x^0, y^0 -> 1 + y^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 + x^0, y^0 -> 1 + y^0, rest remain the same}> Quasi-ranking function: 50000 - y^0 New Graphs: Transitions: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Variables: x^0, y^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000454s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002320s Trying to remove transition: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005061s Time used: 0.00496 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002148s Time used: 4.00186 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.011106s Time used: 4.00061 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.002594s Time used: 1.00048 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007214s Time used: 0.005478 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.008325s Time used: 0.008323 LOG: SAT solveNonLinear - Elapsed time: 0.015539s Cost: 1; Total time: 0.013801 Termination implied by a set of invariant(s): Invariant at l1: x^0 <= 1 + y^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 + x^0, y^0 -> 1 + y^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 + x^0, y^0 -> 1 + y^0, rest remain the same}> Quasi-ranking function: 50000 - x^0 - y^0 New Graphs: Transitions: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Variables: x^0, y^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000488s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002210s Trying to remove transition: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005744s Time used: 0.00564 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001062s Time used: 4.0007 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.019486s Time used: 4.00061 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.002370s Time used: 1.00038 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006805s Time used: 0.004894 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: 0.000698s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000729s Cannot prove unreachability Proving non-termination of subgraph 1 Transitions: 1 + x^0, y^0 -> 1 + y^0, rest remain the same}> Variables: x^0, y^0 Checking conditional non-termination of SCC {l1}... > No exit transition to close. Calling reachability with... Transition: Conditions: OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: OPEN EXITS: > Conditions are reachable! Program does NOT terminate