NO Solver Timeout: 4 Global Timeout: 300 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: 0.00134 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000596s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001130s 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: 0.002553s Time used: 0.002423 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.002758s Time used: 0.002581 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.006325s Time used: 0.006323 LOG: SAT solveNonLinear - Elapsed time: 0.009082s Cost: 1; Total time: 0.008904 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: 0.000968s Remaining time after improvement: 0.999545 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: 0.000139s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000163s 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: 0.000279s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000557s 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: 0.001415s Time used: 0.001351 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001062s Time used: 4.00091 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.004950s Time used: 4.00056 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004428s Time used: 1.00046 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004094s Time used: 0.001977 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.004085s Time used: 0.004083 LOG: SAT solveNonLinear - Elapsed time: 0.008179s Cost: 1; Total time: 0.00606 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: 0.000201s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000569s 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: 0.001656s Time used: 0.001591 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001297s Time used: 4.0011 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.003527s Time used: 4.00053 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004529s Time used: 1.00051 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004425s Time used: 0.002136 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: 0.001495s Time used: 0.001407 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.001909s Time used: 0.001907 LOG: SAT solveNonLinear - Elapsed time: 0.003404s Cost: 1; Total time: 0.003314 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: 0.000774s Remaining time after improvement: 0.999618 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