YES Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: undef1}> undef6}> undef11}> undef18, x_5^0 -> undef19, y_6^0 -> (1 + undef19)}> undef28}> undef32}> undef39, y_6^0 -> (0 + undef39)}> Fresh variables: undef1, undef6, undef11, undef18, undef19, undef28, undef32, undef39, Undef variables: undef1, undef6, undef11, undef18, undef19, undef28, undef32, undef39, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: undef19, y_6^0 -> (1 + undef19)}> undef32, x_5^0 -> undef39, y_6^0 -> (0 + undef39)}> Fresh variables: undef1, undef6, undef11, undef18, undef19, undef28, undef32, undef39, Undef variables: undef1, undef6, undef11, undef18, undef19, undef28, undef32, undef39, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: undef19, y_6^0 -> 1 + undef19, rest remain the same}> undef32, x_5^0 -> undef39, y_6^0 -> undef39, 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: 0.004337 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001592s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.023535s Trying to remove transition: undef32, x_5^0 -> undef39, y_6^0 -> undef39, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.014445s Time used: 0.014005 Trying to remove transition: undef19, y_6^0 -> 1 + undef19, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011559s Time used: 0.010855 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.020153s Time used: 0.019499 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.044208s Time used: 0.0442 LOG: SAT solveNonLinear - Elapsed time: 0.064361s Cost: 1; Total time: 0.063699 Failed at location 1: x_5^0 <= 0 Before Improving: Quasi-invariant at l1: x_5^0 <= 0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.006727s Remaining time after improvement: 0.996937 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l1: x_5^0 <= 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, y_6^0 -> 1 + undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef32, x_5^0 -> undef39, y_6^0 -> undef39, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... > It's unfeasible. Removing transition: undef32, x_5^0 -> undef39, y_6^0 -> undef39, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef19, y_6^0 -> 1 + undef19, rest remain the same}> New Graphs: Calling Safety with literal x_5^0 <= 0 and entry LOG: CALL check - Post:x_5^0 <= 0 - Process 1 * Exit transition: * Postcondition : x_5^0 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000512s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000574s INVARIANTS: 1: Quasi-INVARIANTS to narrow Graph: 1: x_5^0 <= 0 , Narrowing transition: undef19, y_6^0 -> 1 + undef19, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef32, x_5^0 -> undef39, y_6^0 -> undef39, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: undef19, y_6^0 -> 1 + undef19, rest remain the same}> undef32, x_5^0 -> undef39, y_6^0 -> undef39, 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: 0.001511s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.022933s Trying to remove transition: undef32, x_5^0 -> undef39, y_6^0 -> undef39, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.013203s Time used: 0.012665 Trying to remove transition: undef19, y_6^0 -> 1 + undef19, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011755s Time used: 0.010991 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.020091s Time used: 0.019296 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.029922s Time used: 0.029916 LOG: SAT solveNonLinear - Elapsed time: 0.050014s Cost: 1; Total time: 0.049212 Failed at location 1: y_6^0 <= 1 + x_5^0 Before Improving: Quasi-invariant at l1: y_6^0 <= 1 + x_5^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.007147s Remaining time after improvement: 0.997071 Termination implied by a set of quasi-invariant(s): Quasi-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): undef19, y_6^0 -> 1 + undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef32, x_5^0 -> undef39, y_6^0 -> undef39, 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): undef19, y_6^0 -> 1 + undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef32, x_5^0 -> undef39, y_6^0 -> undef39, rest remain the same}> Ranking function: x_5^0 New Graphs: Calling Safety with literal y_6^0 <= 1 + x_5^0 and entry LOG: CALL check - Post:y_6^0 <= 1 + x_5^0 - Process 2 * Exit transition: * Postcondition : y_6^0 <= 1 + x_5^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000472s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000551s INVARIANTS: 1: Quasi-INVARIANTS to narrow Graph: 1: y_6^0 <= 1 + x_5^0 , It's unfeasible. Removing transition: undef19, y_6^0 -> 1 + undef19, rest remain the same}> It's unfeasible. Removing transition: undef32, x_5^0 -> undef39, y_6^0 -> undef39, rest remain the same}> invGraph after Narrowing: Transitions: Variables: x_5^0, y_6^0, __disjvr_0^0 Analyzing SCC {l1}... No cycles found. Proving termination of subgraph 2 Analyzing SCC {l2}... No cycles found. Program Terminates