NO Solver Timeout: 4 Global Timeout: 300 No parsing errors! Init Location: 0 Transitions: 0, __rho_1_^0 -> undef39, dobreak^0 -> (0 + undef39)}> 0, __rho_2_^0 -> undef47, n^0 -> (0 + undef47)}> 0, R^0 -> 0, __rho_1_^0 -> undef59, dobreak^0 -> (0 + undef59)}> Fresh variables: undef39, undef43, undef47, undef50, undef59, Undef variables: undef39, undef43, undef47, undef50, undef59, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: (0 + undef47)}> (0 + undef47)}> Fresh variables: undef39, undef43, undef47, undef50, undef59, Undef variables: undef39, undef43, undef47, undef50, undef59, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: undef47, rest remain the same}> Variables: n^0 Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 undef47, rest remain the same}> Graph 2 Map Locations to Subgraph: ( 0 , 0 ) ( 3 , 1 ) ( 7 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.001755 Checking conditional termination of SCC {l3}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000454s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001341s Trying to remove transition: undef47, rest remain the same}> Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.002824s Time used: 0.002699 Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004020s Time used: 0.003763 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.007425s Time used: 0.007424 LOG: SAT solveNonLinear - Elapsed time: 0.011446s Cost: 1; Total time: 0.011187 Failed at location 3: 1 <= n^0 Before Improving: Quasi-invariant at l3: 1 <= n^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001424s Remaining time after improvement: 0.999343 Termination implied by a set of quasi-invariant(s): Quasi-invariant at l3: 1 <= n^0 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef47, 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): LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: undef47, rest remain the same}> New Graphs: Transitions: Variables: n^0 > No variable changes in termination graph. Checking conditional unfeasibility... Calling Safety with literal n^0 <= 0 and entry LOG: CALL check - Post:n^0 <= 0 - Process 1 * Exit transition: * Postcondition : n^0 <= 0 Quasi-invariants: Location 3: n^0 <= 0 ; undef47 <= 0 ; Postcondition: n^0 <= 0 LOG: CALL check - Post:n^0 <= 0 - Process 2 * Exit transition: undef47, rest remain the same}> * Postcondition : n^0 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000176s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000209s Postcondition: undef47 <= 0 LOG: CALL check - Post:undef47 <= 0 - Process 3 * Exit transition: undef47, rest remain the same}> * Postcondition : undef47 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000167s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000197s LOG: NarrowEntry size 2 Narrowing transition: LOG: Narrow transition size 2 Narrowing transition: undef47, rest remain the same}> LOG: Narrow transition size 2 ENTRIES: undef47, rest remain the same}> END ENTRIES: GRAPH: undef47, rest remain the same}> END GRAPH: EXIT: POST: n^0 <= 0 LOG: Try proving POST Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.001960s Time used: 0.001873 Improving Solution with cost 50 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.003904s Time used: 0.003903 LOG: SAT solveNonLinear - Elapsed time: 0.005864s Cost: 50; Total time: 0.005776 Some transition disabled by a set of invariant(s): Invariant at l3: 1 <= n^0 Strengthening and disabling transitions... > It's unfeasible. Removing transition: undef47, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.001898s Time used: 0.001844 Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 4.000511s Time used: 4.00038 Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.002753s Time used: 1.00029 LOG: Postcondition is not implied - no solution > Postcondition is not implied! LOG: RETURN check - Elapsed time: 5.016285s Proving non-termination of subgraph 1 Transitions: undef47, rest remain the same}> Variables: n^0 Checking conditional non-termination of SCC {l3}... > No exit transition to close. Calling reachability with... Transition: Conditions: OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: undef47, rest remain the same}> Conditions: OPEN EXITS: undef47, rest remain the same}> > Conditions are reachable! Program does NOT terminate