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_i -> ¿functionCall(__VERIFIER_nondet_int), main_up -> 0}> 0}> 1}> (main_i + 1)}> (main_i - 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, main_up -> 0}> 0}> 1}> (main_i + 1)}> (main_i - 1)}> 0}> Fresh variables: Undef variables: Abstraction variables: Exit nodes: 17, 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, ()] | i | local variable | integer | | up | local variable | integer | | Main function: main Preprocessed LLVMGraph Init Location: 0 Transitions: 0) /\ (0 < 1), par{main_i -> (main_i - 1), main_up -> 0}> (main_i + 1), main_up -> 1}> 0) /\ (main_up = 1), par{main_i -> (main_i + 1)}> 0) /\ (main_up < 1), par{main_i -> (main_i - 1)}> 0) /\ (main_up > 1), par{main_i -> (main_i - 1)}> Fresh variables: undef2, Undef variables: undef2, Abstraction variables: Exit nodes: 17, Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: -1 + main_i, main_up -> 0, rest remain the same}> 1 + main_i, main_up -> 1, rest remain the same}> 1 + main_i, rest remain the same}> -1 + main_i, rest remain the same}> -1 + main_i, rest remain the same}> Variables: main_i, main_up Graph 2: Transitions: Variables: Precedence: Graph 0 Graph 1 Graph 2 Map Locations to Subgraph: ( 0 , 0 ) ( 2 , 1 ) ( 17 , 2 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.006378 Some transition disabled by a set of invariant(s): Invariant at l2: main_up <= 1 Strengthening and disabling transitions... > It's unfeasible. Removing transition: -1 + main_i, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + main_i, main_up -> 0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + main_i, main_up -> 1, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): 1 + main_i, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility Strengthening transition (result): -1 + main_i, rest remain the same}> Checking unfeasibility... Time used: 0.003553 Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000847s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.023420s [9826 : 9828] [9826 : 9829] Successful child: 9828 [ 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 + main_i, main_up -> 0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: 1 + main_i, main_up -> 1, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: 1 + main_i, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + main_i, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... > It's unfeasible. Removing transition: 1 + main_i, main_up -> 1, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + main_i, main_up -> 0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: 1 + main_i, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + main_i, rest remain the same}> New Graphs: LOG: CALL check - Post:1 + main_i <= 0 - Process 1 * Exit transition: * Postcondition : 1 + main_i <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000268s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000303s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: 1 + main_i <= 0 , Narrowing transition: -1 + main_i, main_up -> 0, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: 1 + main_i, main_up -> 1, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: 1 + main_i, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: -1 + main_i, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: -1 + main_i, main_up -> 0, rest remain the same}> 1 + main_i, main_up -> 1, rest remain the same}> 1 + main_i, rest remain the same}> -1 + main_i, rest remain the same}> Variables: main_i, main_up Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000754s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.023619s [9826 : 9833] [9826 : 9834] Successful child: 9833 [ 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 + main_i, main_up -> 0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: 1 + main_i, main_up -> 1, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: 1 + main_i, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + main_i, rest remain the same}> [ Termination Graph ] Strengthening and disabling transitions... > It's unfeasible. Removing transition: 1 + main_i, main_up -> 1, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + main_i, main_up -> 0, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: 1 + main_i, rest remain the same}> LOG: CALL solverLinear in Graph for feasibility LOG: RETURN solveLinear in Graph for feasibility It's unfeasible. Removing transition: -1 + main_i, rest remain the same}> New Graphs: LOG: CALL check - Post:11 <= main_i - Process 2 * Exit transition: * Postcondition : 11 <= main_i LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000436s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000475s INVARIANTS: 2: Quasi-INVARIANTS to narrow Graph: 2: 11 <= main_i , Narrowing transition: -1 + main_i, main_up -> 0, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: 1 + main_i, main_up -> 1, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: 1 + main_i, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: -1 + main_i, rest remain the same}> LOG: Narrow transition size 1 invGraph after Narrowing: Transitions: -1 + main_i, main_up -> 0, rest remain the same}> 1 + main_i, main_up -> 1, rest remain the same}> 1 + main_i, rest remain the same}> -1 + main_i, rest remain the same}> Variables: main_i, main_up Checking conditional termination of SCC {l2}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000753s LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.023976s [9826 : 9838] [9826 : 9839] Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.080298s Time used: 0.077875 [9826 : 9844] [9826 : 9848] Successful child: 9844 Program does NOT terminate