NO Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: undef1}> (1 + x_5^0)}> (1 + x_5^0)}> Fresh variables: undef1, Undef variables: undef1, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: (1 + x_5^0)}> (1 + x_5^0)}> Fresh variables: undef1, Undef variables: undef1, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: 1 + x_5^0, rest remain the same}> 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0 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: 0.003232 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001343s Ranking function: 1 - x_5^0 + y_6^0 New Graphs: Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000614s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001742s Trying to remove transition: 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004767s Time used: 0.004631 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008479s Time used: 0.008165 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.018352s Time used: 0.018338 LOG: SAT solveNonLinear - Elapsed time: 0.026831s Cost: 1; Total time: 0.026503 Failed at location 1: x_5^0 <= y_6^0 Before Improving: Quasi-invariant at l1: x_5^0 <= y_6^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002571s Remaining time after improvement: 0.999032 Termination implied by a set of quasi-invariant(s): Quasi-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 It's unfeasible. Removing transition: 1 + x_5^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + x_5^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... > It's unfeasible. Removing transition: 1 + x_5^0, rest remain the same}> New Graphs: Calling Safety with literal x_5^0 <= y_6^0 and entry LOG: CALL check - Post:x_5^0 <= y_6^0 - Process 1 * Exit transition: * Postcondition : x_5^0 <= y_6^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000332s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000406s INVARIANTS: 1: Quasi-INVARIANTS to narrow Graph: 1: x_5^0 <= y_6^0 , Narrowing transition: 1 + x_5^0, rest remain the same}> LOG: Narrow transition size 1 It's unfeasible. Removing transition: 1 + x_5^0, rest remain the same}> invGraph after Narrowing: Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000615s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001732s Trying to remove transition: 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004454s Time used: 0.004323 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001569s Time used: 4.00099 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.005921s Time used: 4.00077 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.012861s Time used: 1.00931 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009589s Time used: 0.006297 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.010774s Time used: 0.010768 LOG: SAT solveNonLinear - Elapsed time: 0.020363s Cost: 1; Total time: 0.017065 Quasi-ranking function: 50000 - x_5^0 + y_6^0 New Graphs: Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000459s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001741s Trying to remove transition: 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005310s Time used: 0.005174 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.003458s Time used: 4.00295 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.005631s Time used: 4.00067 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003492s Time used: 1.00036 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.010578s Time used: 0.007298 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.012912s Time used: 0.012905 LOG: SAT solveNonLinear - Elapsed time: 0.023490s Cost: 1; Total time: 0.020203 Termination implied by a set of invariant(s): Invariant at l1: 1 + 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 Strengthening transition (result): 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 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 - x_5^0 New Graphs: Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000543s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002054s Trying to remove transition: 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005066s Time used: 0.004921 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002165s Time used: 4.00164 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.005388s Time used: 4.0007 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004277s Time used: 1.00058 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011167s Time used: 0.008064 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.009517s Time used: 0.009509 LOG: SAT solveNonLinear - Elapsed time: 0.020684s Cost: 1; Total time: 0.017573 Termination implied by a set of invariant(s): Invariant at l1: y_6^0 <= 1 + x_5^0 [ 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_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 + x_5^0, rest remain the same}> Quasi-ranking function: 50000 - x_5^0 - y_6^0 New Graphs: Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000643s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002431s Trying to remove transition: 1 + x_5^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005912s Time used: 0.005739 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 2.773698s Time used: 2.77324 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.026684s Time used: 0.99864 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.959733s Time used: 0.957653 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.010940s Time used: 0.007801 Proving non-termination of subgraph 1 Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0, y_6^0 Checking conditional non-termination of SCC {l1}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005788s Time used: 0.005627 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.004826s Time used: 0.004816 LOG: SAT solveNonLinear - Elapsed time: 0.010613s Cost: 1; Total time: 0.010443 Failed at location 1: 1 + y_6^0 <= x_5^0 Before Improving: Quasi-invariant at l1: 1 + y_6^0 <= x_5^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001518s Remaining time after improvement: 0.999022 Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l1: 1 + y_6^0 <= x_5^0 Strengthening and disabling EXIT transitions... Closed exits from l1: 1 Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + x_5^0, rest remain the same}> Calling reachability with... Transition: Conditions: 1 + y_6^0 <= x_5^0, OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: 1 + y_6^0 <= x_5^0, OPEN EXITS: > Conditions are reachable! Program does NOT terminate