NO Solver Timeout: 4 Global Timeout: 300 No parsing errors! Init Location: 0 Transitions: (0 + x7^0)}> (0 + undef120), tmp___1^0 -> undef120}> ((0 + x15^0) + y16^0)}> (0 + y16^0)}> (0 + x15^0)}> 0, j^0 -> (0 + undef281), tmp___0^0 -> undef281, x15^0 -> 3, y16^0 -> ~(6)}> ((0 + x11^0) + y12^0)}> (0 + y12^0)}> (0 + x11^0)}> 0, i^0 -> (0 + undef460), tmp^0 -> undef460, x11^0 -> ~(3), y12^0 -> 4}> ((0 + x7^0) + y8^0)}> (0 + y8^0)}> 0, x7^0 -> 3, y8^0 -> 3}> Fresh variables: undef120, undef281, undef460, Undef variables: undef120, undef281, undef460, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: 0, i^0 -> (0 + undef460), x11^0 -> ~(3), y12^0 -> 4}> ((0 + x15^0) + y16^0)}> 0, x15^0 -> 3, y16^0 -> ~(6)}> ((0 + x11^0) + y12^0)}> Fresh variables: undef120, undef281, undef460, Undef variables: undef120, undef281, undef460, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: x11^0 + y12^0, rest remain the same}> Variables: i13^0, x11^0, y12^0 Graph 2: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Graph 3: Transitions: Variables: Precedence: Graph 0 Graph 1 0, i^0 -> undef460, x11^0 -> -3, y12^0 -> 4, rest remain the same}> Graph 2 0, x15^0 -> 3, y16^0 -> -6, rest remain the same}> Graph 3 Map Locations to Subgraph: ( 0 , 0 ) ( 5 , 3 ) ( 9 , 2 ) ( 14 , 1 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.002815 Some transition disabled by a set of invariant(s): Invariant at l14: 1 + x11^0 <= 0 Strengthening and disabling transitions... > It's unfeasible. Removing transition: x11^0 + y12^0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): Checking unfeasibility... Time used: 0.001336 Some transition disabled by a set of invariant(s): Invariant at l14: 0 <= i13^0 Strengthening and disabling transitions... > It's unfeasible. Removing transition: Checking unfeasibility... Time used: 2.4e-05 Analyzing SCC {l14}... No cycles found. Proving termination of subgraph 2 Checking unfeasibility... Time used: 0.002791 Some transition disabled by a set of invariant(s): Invariant at l9: 1 <= x15^0 Strengthening and disabling transitions... > It's unfeasible. Removing transition: LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): x15^0 + y16^0, rest remain the same}> Checking unfeasibility... Time used: 0.001188 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000381s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000962s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003469s Time used: 0.003396 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004405s Time used: 0.004181 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.000986s Time used: 4.00072 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.021828s Time used: 1.00461 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007323s Time used: 0.00469 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.012562s Time used: 0.012561 LOG: SAT solveNonLinear - Elapsed time: 0.019886s Cost: 1; Total time: 0.017251 Termination implied by a set of invariant(s): Invariant at l9: 0 <= 1 + x15^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): x15^0 + y16^0, 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): x15^0 + y16^0, rest remain the same}> Quasi-ranking function: 50000 - x15^0 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000322s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001353s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004501s Time used: 0.004417 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004361s Time used: 0.004113 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001019s Time used: 4.0007 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.020672s Time used: 1.00034 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007701s Time used: 0.005509 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.012980s Time used: 0.012978 LOG: SAT solveNonLinear - Elapsed time: 0.020681s Cost: 1; Total time: 0.018487 Quasi-ranking function: 50000 - i17^0 + 50000*x15^0 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000391s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001922s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005670s Time used: 0.005574 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004988s Time used: 0.004696 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.002047s Time used: 4.00182 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.012313s Time used: 1.00048 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009591s Time used: 0.006511 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.010361s Time used: 0.010359 LOG: SAT solveNonLinear - Elapsed time: 0.019952s Cost: 1; Total time: 0.01687 Termination implied by a set of invariant(s): Invariant at l9: 1 <= x15^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): x15^0 + y16^0, 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): x15^0 + y16^0, rest remain the same}> Quasi-ranking function: 50000 - i17^0 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000430s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001907s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004319s Time used: 0.004218 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005944s Time used: 0.005693 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001169s Time used: 4.0009 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.023968s Time used: 1.00047 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.010418s Time used: 0.007251 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.011986s Time used: 0.011984 LOG: SAT solveNonLinear - Elapsed time: 0.022404s Cost: 1; Total time: 0.019235 Termination implied by a set of invariant(s): Invariant at l9: i17^0 <= 1 + x15^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): x15^0 + y16^0, 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): x15^0 + y16^0, rest remain the same}> Quasi-ranking function: 50000 - i17^0 - x15^0 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000490s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002416s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006775s Time used: 0.00667 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005921s Time used: 0.005572 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001218s Time used: 4.00086 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.025823s Time used: 1.00937 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.009663s Time used: 0.006617 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.016083s Time used: 0.01608 LOG: SAT solveNonLinear - Elapsed time: 0.025746s Cost: 1; Total time: 0.022697 Quasi-ranking function: 50000 + i17^0 - x15^0 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000537s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002308s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005977s Time used: 0.005861 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005902s Time used: 0.005545 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001159s Time used: 4.00084 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.012903s Time used: 1.00044 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011345s Time used: 0.008087 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.015275s Time used: 0.015273 LOG: SAT solveNonLinear - Elapsed time: 0.026620s Cost: 1; Total time: 0.02336 Quasi-ranking function: 50000 + i17^0 + x15^0 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000595s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002665s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006718s Time used: 0.006603 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006586s Time used: 0.006267 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001467s Time used: 4.00109 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.017071s Time used: 1.00775 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011657s Time used: 0.008546 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.012730s Time used: 0.012728 LOG: SAT solveNonLinear - Elapsed time: 0.024386s Cost: 1; Total time: 0.021274 Quasi-ranking function: 50000 + x15^0 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000636s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002933s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005829s Time used: 0.005708 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005950s Time used: 0.005565 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001205s Time used: 4.00082 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.021388s Time used: 1.0005 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011112s Time used: 0.007835 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.014961s Time used: 0.014959 LOG: SAT solveNonLinear - Elapsed time: 0.026074s Cost: 1; Total time: 0.022794 Quasi-ranking function: 50000 + i17^0 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000697s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003169s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.005714s Time used: 0.005592 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006759s Time used: 0.006414 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.020086s Time used: 4.01969 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.002097s Time used: 1.00055 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.012781s Time used: 0.009428 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.017745s Time used: 0.017742 LOG: SAT solveNonLinear - Elapsed time: 0.030526s Cost: 1; Total time: 0.02717 Quasi-ranking function: 50000 - y16^0 New Graphs: Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional termination of SCC {l9}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000729s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.004252s Trying to remove transition: x15^0 + y16^0, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.007412s Time used: 0.007195 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.006874s Time used: 0.006527 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.001466s Time used: 4.00106 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.014218s Time used: 1.00058 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.011792s Time used: 0.008526 Termination failed. Trying to show unreachability... Proving unreachability of entry: 0, x15^0 -> 3, y16^0 -> -6, rest remain the same}> LOG: CALL check - Post:1 <= 0 - Process 1 * Exit transition: 0, x15^0 -> 3, y16^0 -> -6, rest remain the same}> * Postcondition : 1 <= 0 Postcodition moved up: 1 <= 0 LOG: Try proving POST Postcondition: 1 <= 0 LOG: CALL check - Post:1 <= 0 - Process 2 * Exit transition: 0, i^0 -> undef460, x11^0 -> -3, y12^0 -> 4, rest remain the same}> * Postcondition : 1 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000684s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000726s LOG: NarrowEntry size 1 ENTRIES: 0, i^0 -> undef460, x11^0 -> -3, y12^0 -> 4, rest remain the same}> END ENTRIES: GRAPH: END GRAPH: EXIT: 0, x15^0 -> 3, y16^0 -> -6, rest remain the same}> POST: 1 <= 0 LOG: Try proving POST Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.002235s Time used: 0.002177 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003112s Time used: 0.003037 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004031s Time used: 0.003933 LOG: Postcondition is not implied - no solution > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.015153s Cannot prove unreachability Proving non-termination of subgraph 2 Transitions: x15^0 + y16^0, rest remain the same}> Variables: i17^0, x15^0, y16^0 Checking conditional non-termination of SCC {l9}... EXIT TRANSITIONS: Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004224s Time used: 0.004162 LOG: SAT solveNonLinear - Elapsed time: 0.004224s Cost: 0; Total time: 0.004162 Non-termination implied by a set of quasi-invariant(s): Quasi-invariant at l9: i17^0 <= 1 Strengthening and disabling EXIT transitions... Closed exits from l9: 1 Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): x15^0 + y16^0, rest remain the same}> Calling reachability with... Transition: Conditions: i17^0 <= 1, OPEN EXITS: (condsUp: i17^0 <= 1) --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: 0, x15^0 -> 3, y16^0 -> -6, rest remain the same}> Conditions: i17^0 <= 1, OPEN EXITS: 0, x15^0 -> 3, y16^0 -> -6, rest remain the same}> (condsUp: 1 + x11^0 <= i13^0, y12^0 = undef281, 0 <= 1) --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: 0, i^0 -> undef460, x11^0 -> -3, y12^0 -> 4, rest remain the same}> Conditions: 1 + x11^0 <= i13^0, y12^0 = undef281, 0 <= 1, OPEN EXITS: 0, i^0 -> undef460, x11^0 -> -3, y12^0 -> 4, rest remain the same}> > Conditions are reachable! Program does NOT terminate