NO Solver Timeout: 4 Global Timeout: 300 No parsing errors! Init Location: 0 Transitions: (0 + x_13^0)}> undef10, rt_11^0 -> (0 + st_17^0)}> undef19, nd_12^0 -> undef21, rv_18^0 -> undef24}> undef38, nd_12^0 -> undef40, rv_18^0 -> (0 + undef47)}> undef67}> Fresh variables: undef10, undef19, undef21, undef24, undef28, undef38, undef40, undef47, undef67, Undef variables: undef10, undef19, undef21, undef24, undef28, undef38, undef40, undef47, undef67, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: undef10}> undef19}> undef38}> undef38}> Fresh variables: undef10, undef19, undef21, undef24, undef28, undef38, undef40, undef47, undef67, Undef variables: undef10, undef19, undef21, undef24, undef28, undef38, undef40, undef47, undef67, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: undef19, rest remain the same}> undef38, rest remain the same}> undef38, rest remain the same}> Variables: lt_15^0, y_16^0 Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 undef10, rest remain the same}> 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: 0.002487 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000743s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003394s Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004693s Time used: 0.004464 Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004336s Time used: 0.003926 Trying to remove transition: undef19, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004604s Time used: 0.004225 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.010758s Time used: 0.010295 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.026083s Time used: 0.026081 LOG: SAT solveNonLinear - Elapsed time: 0.036841s Cost: 1; Total time: 0.036376 Failed at location 2: 1 + y_16^0 <= lt_15^0 Before Improving: Quasi-invariant at l2: 1 + y_16^0 <= lt_15^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004226s Remaining time after improvement: 0.998892 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: 1 + y_16^0 <= lt_15^0 [ 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, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> [ Termination 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, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> New Graphs: Calling Safety with literal 1 + y_16^0 <= lt_15^0 and entry LOG: CALL check - Post:1 + y_16^0 <= lt_15^0 - Process 1 * Exit transition: * Postcondition : 1 + y_16^0 <= lt_15^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000263s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000292s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: 1 + y_16^0 <= lt_15^0 , Narrowing transition: undef19, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef38, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef38, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: undef19, rest remain the same}> undef38, rest remain the same}> undef38, rest remain the same}> Variables: lt_15^0, y_16^0 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000603s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003103s Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004051s Time used: 0.00383 Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004356s Time used: 0.003922 Trying to remove transition: undef19, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004599s Time used: 0.004183 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009982s Time used: 0.009483 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.017620s Time used: 0.017618 LOG: SAT solveNonLinear - Elapsed time: 0.027601s Cost: 1; Total time: 0.027101 Failed at location 2: y_16^0 <= lt_15^0 Before Improving: Quasi-invariant at l2: y_16^0 <= lt_15^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004311s Remaining time after improvement: 0.998836 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: y_16^0 <= lt_15^0 [ 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, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> [ Termination 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, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef38, rest remain the same}> New Graphs: Calling Safety with literal y_16^0 <= lt_15^0 and entry LOG: CALL check - Post:y_16^0 <= lt_15^0 - Process 2 * Exit transition: * Postcondition : y_16^0 <= lt_15^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000289s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000320s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: y_16^0 <= lt_15^0 , Narrowing transition: undef19, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef38, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: undef38, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: undef19, rest remain the same}> undef38, rest remain the same}> undef38, rest remain the same}> Variables: lt_15^0, y_16^0 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000639s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003129s Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004103s Time used: 0.003806 Trying to remove transition: undef38, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004371s Time used: 0.003912 Trying to remove transition: undef19, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004629s Time used: 0.004178 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.010514s Time used: 0.010064 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001207s Time used: 4.00037 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.009224s Time used: 1.00043 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015697s Time used: 0.007776 Proving non-termination of subgraph 1 Transitions: undef19, rest remain the same}> undef38, rest remain the same}> undef38, rest remain the same}> Variables: lt_15^0, y_16^0 Checking that every undef value has an assignment... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000689s Checking conditional non-termination of SCC {l2}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.021922s Time used: 0.021714 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.072427s Time used: 0.072424 LOG: SAT solveNonLinear - Elapsed time: 0.094348s Cost: 1; Total time: 0.094138 Failed at location 2: 1 + lt_15^0 <= y_16^0 Before Improving: Quasi-invariant at l2: 1 + lt_15^0 <= y_16^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.018152s Remaining time after improvement: 0.998631 Minimizing number of undef constraints... LOG: CALL solveNonLinear LOG: RETURN solveNonLinear - Elapsed time: 0.002708s Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l2: 1 + lt_15^0 <= y_16^0 Constraint over undef '1 + undef19 <= y_16^0' in transition: undef19, rest remain the same}> Constraint over undef 'undef38 <= lt_15^0' in transition: undef38, rest remain the same}> Constraint over undef 'undef38 <= lt_15^0' in transition: undef38, 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): undef19, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef38, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): undef38, rest remain the same}> Calling reachability with... Transition: Conditions: 1 + lt_15^0 <= y_16^0, OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: 1 + lt_15^0 <= y_16^0, OPEN EXITS: > Conditions are reachable! Program does NOT terminate