NO Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: undef3}> (1 + undef7)}> (~(1) + undef12)}> Fresh variables: undef3, undef7, undef12, Undef variables: undef3, undef7, undef12, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: (1 + undef7)}> (~(1) + undef12)}> Fresh variables: undef3, undef7, undef12, Undef variables: undef3, undef7, undef12, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: 1 + undef7, rest remain the same}> -1 + undef12, 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 ) ( 3 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.002298 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000852s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002475s Trying to remove transition: -1 + undef12, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005006s Time used: 0.004833 Trying to remove transition: 1 + undef7, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004481s Time used: 0.004209 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008289s Time used: 0.00801 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.031382s Time used: 0.030845 Improving Solution with cost 2 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.151571s Time used: 0.151567 LOG: SAT solveNonLinear - Elapsed time: 0.182953s Cost: 2; Total time: 0.182412 Failed at location 2: x_5^0 <= 0 Failed at location 2: 0 <= x_5^0 Before Improving: Quasi-invariant at l2: x_5^0 <= 0 Quasi-invariant at l2: 0 <= x_5^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.010899s Remaining time after improvement: 0.998435 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: x_5^0 <= 0 Quasi-invariant at l2: 0 <= x_5^0 [ 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 + undef7, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + undef12, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... > It's unfeasible. Removing transition: 1 + undef7, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + undef12, 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: 0.000424s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000486s Calling Safety with literal 0 <= x_5^0 and entry LOG: CALL check - Post:0 <= x_5^0 - Process 2 * Exit transition: * Postcondition : 0 <= x_5^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000356s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000412s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: x_5^0 <= 0 , 0 <= x_5^0 , Narrowing transition: 1 + undef7, rest remain the same}> LOG: Narrow transition size 2 Narrowing transition: -1 + undef12, rest remain the same}> LOG: Narrow transition size 2 invGraph after Narrowing: Transitions: 1 + undef7, rest remain the same}> -1 + undef12, rest remain the same}> Variables: x_5^0 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000825s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002472s Trying to remove transition: -1 + undef12, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004601s Time used: 0.004452 Trying to remove transition: 1 + undef7, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004572s Time used: 0.004288 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009037s Time used: 0.008754 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.019142s Time used: 4.01473 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.014839s Time used: 1.00062 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015273s Time used: 0.00844 Proving non-termination of subgraph 1 Transitions: 1 + undef7, rest remain the same}> -1 + undef12, 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: 0.009629s Time used: 0.009456 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.016986s Time used: 0.016979 LOG: SAT solveNonLinear - Elapsed time: 0.026615s Cost: 1; Total time: 0.026435 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: 0.005314s Remaining time after improvement: 0.99883 Minimizing number of undef constraints... LOG: CALL solveNonLinear LOG: RETURN solveNonLinear - Elapsed time: 0.002240s Number of undef constraints reduced! Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: 1 <= x_5^0 Constraint over undef 'x_5^0 <= 1 + undef7' in transition: 1 + undef7, 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): 1 + undef7, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + undef12, 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