NO Solver Timeout: 4 Global Timeout: 300 No parsing errors! Init Location: 0 Transitions: ~(1)), par{arg1 -> undef1}> 0) /\ (undef2 > ~(1)), par{arg1 -> undef2}> undef3}> Fresh variables: undef1, undef2, undef3, Undef variables: undef1, undef2, undef3, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: ~(1))> 0) /\ (undef2 > ~(1)), par{arg1 -> undef2}> Fresh variables: undef1, undef2, undef3, Undef variables: undef1, undef2, undef3, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: undef2, rest remain the same}> Variables: arg1 Precedence: Graph 0 Graph 1 Map Locations to Subgraph: ( 0 , 0 ) ( 2 , 1 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.001619 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000605s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001650s Trying to remove transition: undef2, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003079s Time used: 0.002913 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003243s Time used: 0.003059 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.007587s Time used: 0.007585 LOG: SAT solveNonLinear - Elapsed time: 0.010830s Cost: 1; Total time: 0.010644 Failed at location 2: arg1 <= 0 Before Improving: Quasi-invariant at l2: arg1 <= 0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000845s Remaining time after improvement: 0.99961 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: arg1 <= 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: undef2, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... > It's unfeasible. Removing transition: undef2, rest remain the same}> New Graphs: Calling Safety with literal arg1 <= 0 and entry LOG: CALL check - Post:arg1 <= 0 - Process 1 * Exit transition: * Postcondition : arg1 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000185s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000217s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: arg1 <= 0 , Narrowing transition: undef2, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: undef2, rest remain the same}> Variables: arg1 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000272s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000797s Trying to remove transition: undef2, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.001616s Time used: 0.001545 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.002123s Time used: 0.002003 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.000926s Time used: 4.00077 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.003841s Time used: 1.00034 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004106s Time used: 0.002088 Proving non-termination of subgraph 1 Transitions: undef2, rest remain the same}> Variables: arg1 Checking conditional non-termination of SCC {l2}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.002733s Time used: 0.002629 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.005056s Time used: 0.005054 LOG: SAT solveNonLinear - Elapsed time: 0.007788s Cost: 1; Total time: 0.007683 Failed at location 2: 1 <= arg1 Before Improving: Quasi-invariant at l2: 1 <= arg1 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001464s Remaining time after improvement: 0.999543 Minimizing number of undef constraints... LOG: CALL solveNonLinear LOG: RETURN solveNonLinear - Elapsed time: 0.000827s Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: 1 <= arg1 Constraint over undef '1 <= undef2' in transition: undef2, rest remain the same}> 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): undef2, rest remain the same}> Calling reachability with... Transition: Conditions: 1 <= arg1, OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: 1 <= arg1, OPEN EXITS: > Conditions are reachable! Program does NOT terminate