NO Solver Timeout: 4 Global Timeout: 60 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: 0.001747 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000386s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001001s 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: 0.004836s Time used: 0.004712 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001359s Time used: 4.00084 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.004682s Time used: 4.0007 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003500s Time used: 1.00037 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009643s Time used: 0.006571 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.011943s Time used: 0.011937 LOG: SAT solveNonLinear - Elapsed time: 0.021586s Cost: 1; Total time: 0.018508 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: 0.000593s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002076s 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: 0.006996s Time used: 0.006842 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.000736s Time used: 4.00017 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.026874s Time used: 4.0127 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004182s Time used: 1.00063 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011595s Time used: 0.008792 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.018764s Time used: 0.018758 LOG: SAT solveNonLinear - Elapsed time: 0.030359s Cost: 1; Total time: 0.02755 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: 0.000662s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002626s 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: 0.008629s Time used: 0.008471 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001775s Time used: 4.00123 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.004014s Time used: 4.00103 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004191s Time used: 1.00065 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.012400s Time used: 0.009448 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.019347s Time used: 0.01934 LOG: SAT solveNonLinear - Elapsed time: 0.031747s Cost: 1; Total time: 0.028788 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: 0.000868s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004311s 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: 0.010298s Time used: 0.010124 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 2.781175s Time used: 2.78069 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.025955s Time used: 0.996064 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.971302s Time used: 0.967926 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.012971s Time used: 0.009595 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.023275s Time used: 0.023268 LOG: SAT solveNonLinear - Elapsed time: 0.036245s Cost: 1; Total time: 0.032863 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: 0.000931s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004729s 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: 0.010460s Time used: 0.010247 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.935113s Time used: 0.934473 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.999368s Time used: 0.997626 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.998144s Time used: 0.99632 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.014280s Time used: 0.011007 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.017486s Time used: 0.01748 LOG: SAT solveNonLinear - Elapsed time: 0.031766s Cost: 1; Total time: 0.028487 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: 0.001038s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004650s 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: 0.011660s Time used: 0.011474 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.939221s Time used: 0.938641 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.975973s Time used: 0.973635 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.997801s Time used: 0.996011 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.013481s Time used: 0.01053 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: 0.001986s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.002063s 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