NO Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: (~(1) + x^0), y^0 -> (~(1) + y^0), z^0 -> (1 + z^0)}> (0 + y^0)}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: (~(1) + x^0), y^0 -> (~(1) + y^0), z^0 -> (1 + z^0)}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 Map Locations to Subgraph: ( 0 , 0 ) ( 1 , 1 ) ( 2 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.002153 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000438s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001255s Trying to remove transition: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006621s Time used: 0.006504 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001655s Time used: 4.00097 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.068937s Time used: 4.00048 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.002580s Time used: 1.00001 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.012623s Time used: 0.008121 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.014328s Time used: 0.014318 LOG: SAT solveNonLinear - Elapsed time: 0.026951s Cost: 1; Total time: 0.022439 Termination implied by a set of invariant(s): Invariant at l1: y^0 <= 1 + x^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Quasi-ranking function: 50000 - x^0 + 2*y^0 New Graphs: Transitions: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000637s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003057s Trying to remove transition: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.008384s Time used: 0.008232 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001531s Time used: 4.00073 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.030787s Time used: 4.00052 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.002999s Time used: 1.00039 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.013883s Time used: 0.009522 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.015338s Time used: 0.015331 LOG: SAT solveNonLinear - Elapsed time: 0.029221s Cost: 1; Total time: 0.024853 Termination implied by a set of invariant(s): Invariant at l1: y^0 <= x^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Quasi-ranking function: 50000 + y^0 New Graphs: Transitions: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000700s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002746s Trying to remove transition: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009014s Time used: 0.008856 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001961s Time used: 4.00112 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.015758s Time used: 4.00047 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.004705s Time used: 1.00005 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.013781s Time used: 0.009627 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.018226s Time used: 0.01822 LOG: SAT solveNonLinear - Elapsed time: 0.032007s Cost: 1; Total time: 0.027847 Termination implied by a set of invariant(s): Invariant at l1: y^0 <= x^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Quasi-ranking function: 50000 + 2*x^0 - y^0 New Graphs: Transitions: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000797s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003227s Trying to remove transition: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015006s Time used: 0.014832 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 2.680319s Time used: 2.67954 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.007077s Time used: 0.996575 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.956027s Time used: 0.953921 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015312s Time used: 0.011091 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.019795s Time used: 0.019784 LOG: SAT solveNonLinear - Elapsed time: 0.035107s Cost: 1; Total time: 0.030875 Termination implied by a set of invariant(s): Invariant at l1: y^0 <= x^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Quasi-ranking function: 50000 + x^0 + y^0 New Graphs: Transitions: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000888s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003435s Trying to remove transition: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011815s Time used: 0.011639 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.937185s Time used: 0.936554 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.000212s Time used: 0.997786 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.997220s Time used: 0.995166 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.016322s Time used: 0.012252 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.015949s Time used: 0.015942 LOG: SAT solveNonLinear - Elapsed time: 0.032271s Cost: 1; Total time: 0.028194 Termination implied by a set of invariant(s): Invariant at l1: y^0 <= 1 + x^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Quasi-ranking function: 50000 + x^0 New Graphs: Transitions: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Checking conditional termination of SCC {l1}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000963s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003953s Trying to remove transition: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.015355s Time used: 0.015183 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.935919s Time used: 0.935294 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.999323s Time used: 0.997662 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.998124s Time used: 0.99587 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.006386s Time used: 0.999458 Termination failed. Trying to show unreachability... Proving unreachability of entry: LOG: CALL check - Post:1 <= 0 - Process 1 * Exit transition: * Postcondition : 1 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002218s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.002305s Cannot prove unreachability Proving non-termination of subgraph 1 Transitions: -1 + x^0, y^0 -> -1 + y^0, z^0 -> 1 + z^0, rest remain the same}> Variables: x^0, y^0, z^0 Checking conditional non-termination of SCC {l1}... > No exit transition to close. Calling reachability with... Transition: Conditions: OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: OPEN EXITS: > Conditions are reachable! Program does NOT terminate