NO Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: ((0 + x^0) + y^0), y^0 -> (~(2) + y^0)}> ((0 + x^0) + z^0), y^0 -> (1 + y^0), z^0 -> (~(2) + z^0)}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: ((0 + x^0) + y^0), y^0 -> (~(2) + y^0)}> ((0 + x^0) + z^0), y^0 -> (1 + y^0), z^0 -> (~(2) + z^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: x^0 + y^0, y^0 -> -2 + y^0, rest remain the same}> x^0 + z^0, y^0 -> 1 + y^0, z^0 -> -2 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Precedence: Graph 0 Graph 1 Map Locations to Subgraph: ( 0 , 0 ) ( 1 , 1 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.004785 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000937s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002178s Trying to remove transition: x^0 + z^0, y^0 -> 1 + y^0, z^0 -> -2 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.012395s Time used: 0.012274 Trying to remove transition: x^0 + y^0, y^0 -> -2 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007186s Time used: 0.006402 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001760s Time used: 4.00123 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.005979s Time used: 4.00083 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.009453s Time used: 1.00025 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.037525s Time used: 0.021153 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.034546s Time used: 0.03454 LOG: SAT solveNonLinear - Elapsed time: 0.072071s Cost: 1; Total time: 0.055693 Quasi-ranking function: 50000 + y^0 + z^0 New Graphs: Transitions: x^0 + y^0, y^0 -> -2 + y^0, rest remain the same}> x^0 + z^0, y^0 -> 1 + y^0, z^0 -> -2 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000911s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.005978s Trying to remove transition: x^0 + z^0, y^0 -> 1 + y^0, z^0 -> -2 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.021291s Time used: 0.021104 Trying to remove transition: x^0 + y^0, y^0 -> -2 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015634s Time used: 0.014528 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002038s Time used: 4.00098 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.034465s Time used: 4.00075 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.008789s Time used: 1.00021 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.036997s Time used: 0.020387 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.027885s Time used: 0.0277 LOG: SAT solveNonLinear - Elapsed time: 0.064882s Cost: 1; Total time: 0.048087 Quasi-ranking function: 50000 + z^0 New Graphs: Transitions: x^0 + y^0, y^0 -> -2 + y^0, rest remain the same}> x^0 + z^0, y^0 -> 1 + y^0, z^0 -> -2 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001028s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.006624s Trying to remove transition: x^0 + z^0, y^0 -> 1 + y^0, z^0 -> -2 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.023702s Time used: 0.023511 Trying to remove transition: x^0 + y^0, y^0 -> -2 + y^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015022s Time used: 0.013959 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.004064s Time used: 4.00307 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.015936s Time used: 4.00094 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.009685s Time used: 1.00009 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.039758s Time used: 0.023301 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: 0.002819s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.002904s Cannot prove unreachability Proving non-termination of subgraph 1 Transitions: x^0 + y^0, y^0 -> -2 + y^0, rest remain the same}> x^0 + z^0, y^0 -> 1 + y^0, z^0 -> -2 + z^0, rest remain the same}> Variables: x^0, y^0, z^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