NO Solver Timeout: 4 Global Timeout: 60 No parsing errors! Init Location: 0 Transitions: (1 + i^0)}> undef140, bufHdr_cntxDirty^0 -> 0, bufHdr_flags^0 -> undef142}> undef162}> 0}> undef390}> 0, i^0 -> 1}> (0 + bufHdr_tag_rnode^0), b1111^0 -> (0 + rnode^0), ret_RelFileNodeEquals1313^0 -> undef463, tmp1212^0 -> undef466, tmp___14^0 -> (0 + undef463)}> (1 + i^0)}> 0, bufHdr_flags^0 -> undef534, bufHdr_tag_rnode_relNode^0 -> 1}> (0 + bufHdr_tag_rnode^0), b77^0 -> (0 + rnode^0), ret_RelFileNodeEquals99^0 -> undef724, tmp1^0 -> (0 + undef724), tmp88^0 -> undef728}> 0}> (0 + undef812), NBuffers^0 -> undef810, NLocBuffer^0 -> undef811, R^0 -> undef812, istemp^0 -> undef826}> Fresh variables: undef140, undef142, undef162, undef365, undef390, undef444, undef463, undef466, undef534, undef724, undef728, undef810, undef811, undef812, undef826, Undef variables: undef140, undef142, undef162, undef365, undef390, undef444, undef463, undef466, undef534, undef724, undef728, undef810, undef811, undef812, undef826, Abstraction variables: Exit nodes: Accepting locations: Asserts: Preprocessed LLVMGraph Init Location: 0 Transitions: 1}> 1}> 1}> 1}> 0}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> (1 + i^0)}> Fresh variables: undef140, undef142, undef162, undef365, undef390, undef444, undef463, undef466, undef534, undef724, undef728, undef810, undef811, undef812, undef826, Undef variables: undef140, undef142, undef162, undef365, undef390, undef444, undef463, undef466, undef534, undef724, undef728, undef810, undef811, undef812, undef826, Abstraction variables: Exit nodes: Accepting locations: Asserts: ************************************************************* ******************************************************************************************* *********************** WORKING TRANSITION SYSTEM (DAG) *********************** ******************************************************************************************* Init Location: 0 Graph 0: Transitions: Variables: Graph 1: Transitions: 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> Variables: NLocBuffer^0, i^0, bufHdr_tag_blockNum^0, firstDelBlock^0 Graph 2: Transitions: Variables: Graph 3: Transitions: 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> Variables: NBuffers^0, i^0, bufHdr_tag_blockNum^0, firstDelBlock^0 Graph 4: Transitions: Variables: Precedence: Graph 0 Graph 1 0, rest remain the same}> Graph 2 Graph 3 1, rest remain the same}> 1, rest remain the same}> Graph 4 1, rest remain the same}> 1, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> Map Locations to Subgraph: ( 0 , 0 ) ( 3 , 1 ) ( 7 , 2 ) ( 10 , 3 ) ( 14 , 4 ) ******************************************************************************************* ******************************** CHECKING ASSERTIONS ******************************** ******************************************************************************************* Proving termination of subgraph 0 Proving termination of subgraph 1 Checking unfeasibility... Time used: 0.017232 Checking conditional termination of SCC {l3}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.005248s Ranking function: -2 + NLocBuffer^0 - 2*bufHdr_tag_blockNum^0 + 2*firstDelBlock^0 - i^0 New Graphs: Transitions: 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> Variables: NLocBuffer^0, bufHdr_tag_blockNum^0, firstDelBlock^0, i^0 Checking conditional termination of SCC {l3}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.002699s Ranking function: NLocBuffer^0 + bufHdr_tag_blockNum^0 - firstDelBlock^0 - i^0 New Graphs: Transitions: 1 + i^0, rest remain the same}> Variables: NLocBuffer^0, i^0 Checking conditional termination of SCC {l3}... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001224s Ranking function: -1 + NLocBuffer^0 - i^0 New Graphs: Proving termination of subgraph 2 Checking unfeasibility... Time used: 0.001053 > No variable changes in termination graph. Checking conditional unfeasibility... Termination failed. Trying to show unreachability... Proving unreachability of entry: LOG: CALL check - Post:1 <= 0 - Process 1 * Exit transition: * 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, rest remain the same}> * Postcondition : 1 <= 0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.000861s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.000959s LOG: NarrowEntry size 1 Narrowing transition: 1 + i^0, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: 1 + i^0, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: 1 + i^0, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: 1 + i^0, rest remain the same}> LOG: Narrow transition size 1 Narrowing transition: 1 + i^0, rest remain the same}> LOG: Narrow transition size 1 ENTRIES: 0, rest remain the same}> END ENTRIES: GRAPH: 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> 1 + i^0, rest remain the same}> END GRAPH: EXIT: POST: 1 <= 0 LOG: Try proving POST Solving with 1 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.039336s Time used: 0.039033 Improving Solution with cost 51 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 1.000519s Time used: 1.0005 LOG: SAT solveNonLinear - Elapsed time: 1.039855s Cost: 51; Total time: 1.03954 Failed at location 3: NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 Before Improving: Quasi-invariant at l3: NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.009504s Remaining time after improvement: 0.997333 Some transition disabled by a set of quasi-invariant(s): Quasi-invariant at l3: NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 LOG: NEXT CALL check - disable LOG: CALL check - Post:NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 - Process 3 * Exit transition: 0, rest remain the same}> * Postcondition : NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001354s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.001485s Solving with 2 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 0.246530s Time used: 0.246025 Improving Solution with cost 51 ... LOG: CALL solveNonLinearGetNextSolution LOG: RETURN solveNonLinearGetNextSolution - Elapsed time: 1.001003s Time used: 1.001 LOG: SAT solveNonLinear - Elapsed time: 1.247533s Cost: 51; Total time: 1.24702 Failed at location 3: NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 Before Improving: Quasi-invariant at l3: 0 <= 1 + i^0 Quasi-invariant at l3: NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 Optimizing invariants... LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.059471s Remaining time after improvement: 0.996092 Some transition disabled by a set of quasi-invariant(s): Quasi-invariant at l3: 0 <= 1 + i^0 Quasi-invariant at l3: NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 LOG: NEXT CALL check - disable LOG: CALL check - Post:NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 - Process 4 * Exit transition: 0, rest remain the same}> * Postcondition : NLocBuffer^0 + firstDelBlock^0 <= 1 + bufHdr_tag_blockNum^0 + i^0 LOG: CALL solveLinear LOG: RETURN solveLinear - Elapsed time: 0.001880s > Postcondition is not implied! LOG: RETURN check - Elapsed time: 0.002011s Solving with 3 template(s). LOG: CALL solveNonLinearGetFirstSolution LOG: RETURN solveNonLinearGetFirstSolution - Elapsed time: 1.000173s Time used: 1.00005 LOG: Postcondition is not implied - no solution > Postcondition is not implied! LOG: RETURN check - Elapsed time: 3.386661s Cannot prove unreachability Proving non-termination of subgraph 2 Transitions: Variables: Checking conditional non-termination of SCC {l7}... > No exit transition to close. Calling reachability with... Transition: Conditions: OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: Conditions: OPEN EXITS: --- Reachability graph --- > Graph without transitions. Calling reachability with... Transition: 0, rest remain the same}> Conditions: NLocBuffer^0 <= i^0, OPEN EXITS: 0, rest remain the same}> > Conditions are reachable! Program does NOT terminate