NO Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: (1 + x_5^0)}> undef7}> Fresh variables: undef7, Undef variables: undef7, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: (1 + x_5^0)}> Fresh variables: undef7, Undef variables: undef7, 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}> Variables: x_5^0 Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 Map Locations to Subgraph: ( 0 , 0 ) ( 2 , 1 ) ( 4 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.001485 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000623s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001182s 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: 0.003335s Time used: 0.003208 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004186s Time used: 0.003954 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.010463s Time used: 0.010459 LOG: SAT solveNonLinear - Elapsed time: 0.014650s Cost: 1; Total time: 0.014413 Failed at location 2: 1 + x_5^0 <= 0 Before Improving: Quasi-invariant at l2: 1 + x_5^0 <= 0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001534s Remaining time after improvement: 0.999181 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: 1 + 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: 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 1 + x_5^0 <= 0 and entry LOG: CALL check - Post:1 + x_5^0 <= 0 - Process 1 * Exit transition: * Postcondition : 1 + x_5^0 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000267s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000336s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: 1 + x_5^0 <= 0 , Narrowing transition: 1 + x_5^0, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000577s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001169s 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: 0.002965s Time used: 0.002844 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002291s Time used: 4.00179 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.007375s Time used: 4.00074 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.006010s Time used: 1.00067 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007365s Time used: 0.004065 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.008879s Time used: 0.008873 LOG: SAT solveNonLinear - Elapsed time: 0.016243s Cost: 1; Total time: 0.012938 Quasi-ranking function: 50000 - x_5^0 New Graphs: Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000394s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001215s 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: 0.003554s Time used: 0.003425 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001526s Time used: 4.00102 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.006016s Time used: 4.00075 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.006439s Time used: 1.00099 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008071s Time used: 0.005044 Proving non-termination of subgraph 1 Transitions: 1 + x_5^0, rest remain the same}> Variables: x_5^0 Checking conditional non-termination of SCC {l2}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003124s Time used: 0.002981 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.004006s Time used: 0.004002 LOG: SAT solveNonLinear - Elapsed time: 0.007130s Cost: 1; Total time: 0.006983 Failed at location 2: 1 <= x_5^0 Before Improving: Quasi-invariant at l2: 1 <= x_5^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001476s Remaining time after improvement: 0.999123 Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: 1 <= x_5^0 Strengthening and disabling EXIT transitions... Closed exits from l2: 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 <= x_5^0, OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: 1 <= x_5^0, OPEN EXITS: > Conditions are reachable! Program does NOT terminate