NO Solver Timeout: 4 Global Timeout: 300 Maximum number of concurrent processes: 900 ******************************************************************************************* *********************** UNPROCESSED TRANSITION SYSTEMS PER FUNCTION *********************** ******************************************************************************************* List of LLVMGraphs + assumeNodes + staticAssertNodes [1] : +++++++++++++++++++++++++++++++ main +++++++++++++++++++++++++++++++ + + Init Location: 0 Transitions: 0, main_x -> ¿functionCall(__VERIFIER_nondet_int), main_y -> ¿functionCall(__VERIFIER_nondet_int)}> ~(main_y), main_y -> (main_y + 1)}> 0}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: Accepting locations: Asserts: + Assume Nodes [0]: ++++++++++++++++++++++++++++++++++++++++++++++++ + Static Assert Nodes [0]: +++++++++++++++++++++++++++++++++++++++++ + After preprocess (paralelization): ++++++++++++++++++++++++++++++ Init Location: 0 Transitions: 0}> ¿functionCall(__VERIFIER_nondet_int)}> varCall_1}> ¿functionCall(__VERIFIER_nondet_int)}> varCall_2}> ~(main_y), main_y -> (main_y + 1)}> 0}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: 6, Accepting locations: Asserts: + + +++++++++++++++++++++++++++++++ main +++++++++++++++++++++++++++++++ Function Return and Parameters Information [2 functions]: function name: __VERIFIER_nondet_int [1 return + 0 parameters] demangled: __VERIFIER_nondet_int __VERIFIER_nondet_int__func_return_ [function result] : int function name: main [1 return + 0 parameters] demangled: main main__func_return_ [function result] : int AST Ident Scanner Information [4 idents]: __VERIFIER_nondet_int | function | [integer, ()] | | main | function | [integer, ()] | x | local variable | integer | | y | local variable | integer | | Main function: main Preprocessed LLVMGraph Init Location: 0 Transitions: ~(main_y), main_y -> (main_y + 1)}> Fresh variables: undef3, undef4, Undef variables: undef3, undef4, Abstraction variables: Exit nodes: 6, Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: -main_y, main_y -> 1 + main_y, rest remain the same}> Variables: main_x, main_y Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 Map Locations to Subgraph: ( 0 , 0 ) ( 2 , 1 ) ( 6 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.001838 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000491s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001339s [30438 : 30440] [30438 : 30441] Successful child: 30440 [ 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: -main_y, main_y -> 1 + main_y, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... > It's unfeasible. Removing transition: -main_y, main_y -> 1 + main_y, rest remain the same}> New Graphs: LOG: CALL check - Post:10 <= main_x - Process 1 * Exit transition: * Postcondition : 10 <= main_x LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000236s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000272s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: 10 <= main_x , Narrowing transition: -main_y, main_y -> 1 + main_y, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: -main_y, main_y -> 1 + main_y, rest remain the same}> Variables: main_x, main_y Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000237s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000734s [30438 : 30445] [30438 : 30446] Successful child: 30445 [ Invariant Graph ] Strengthening and disabling transitions... LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -main_y, main_y -> 1 + main_y, 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): -main_y, main_y -> 1 + main_y, rest remain the same}> Ranking function: 9 - main_x New Graphs: LOG: CALL check - Post:19 + main_y <= main_x - Process 2 * Exit transition: * Postcondition : 19 + main_y <= main_x LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000261s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000303s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: 19 + main_y <= main_x , Narrowing transition: -main_y, main_y -> 1 + main_y, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: -main_y, main_y -> 1 + main_y, rest remain the same}> Variables: main_x, main_y Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000298s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001096s [30438 : 30450] [30438 : 30451] Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.004245s Time used: 0.00399 Improving Solution with cost 1 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 0.010768s Time used: 0.010766 LOG: SAT solveNonLinear - Elapsed time: 0.015013s Cost: 1; Total time: 0.014756 Quasi-ranking function: 50000 - main_y New Graphs: Transitions: -main_y, main_y -> 1 + main_y, rest remain the same}> Variables: main_x, main_y Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000373s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.003141s [30438 : 30455] [30438 : 30456] Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.003846s Time used: 0.003652 [30438 : 30460] [30438 : 30464] Successful child: 30460 Program does NOT terminate