./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:26:12,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:26:12,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:26:12,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:26:12,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:26:12,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:26:12,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:26:12,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:26:12,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:26:12,493 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:26:12,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:26:12,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:26:12,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:26:12,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:26:12,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:26:12,494 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:26:12,494 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:26:12,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:26:12,495 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2025-03-04 15:26:12,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:26:12,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:26:12,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:26:12,727 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:26:12,728 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:26:12,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2025-03-04 15:26:13,883 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb6042df/da63723a7b214e569f7b19d4250ce300/FLAG3d4127f46 [2025-03-04 15:26:14,112 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:26:14,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2025-03-04 15:26:14,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb6042df/da63723a7b214e569f7b19d4250ce300/FLAG3d4127f46 [2025-03-04 15:26:14,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb6042df/da63723a7b214e569f7b19d4250ce300 [2025-03-04 15:26:14,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:26:14,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:26:14,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:26:14,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:26:14,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:26:14,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb92a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14, skipping insertion in model container [2025-03-04 15:26:14,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,480 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:26:14,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:26:14,599 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:26:14,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:26:14,624 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:26:14,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14 WrapperNode [2025-03-04 15:26:14,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:26:14,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:26:14,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:26:14,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:26:14,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,662 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 216 [2025-03-04 15:26:14,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:26:14,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:26:14,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:26:14,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:26:14,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,686 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 15:26:14,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,695 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:26:14,707 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:26:14,707 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:26:14,707 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:26:14,707 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (1/1) ... [2025-03-04 15:26:14,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:26:14,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:14,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:26:14,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:26:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:26:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:26:14,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:26:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:26:14,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:26:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:26:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:26:14,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:26:14,764 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:26:14,844 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:26:14,846 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:26:15,207 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:26:15,207 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:26:15,412 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:26:15,414 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:26:15,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:15 BoogieIcfgContainer [2025-03-04 15:26:15,415 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:26:15,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:26:15,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:26:15,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:26:15,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:26:14" (1/3) ... [2025-03-04 15:26:15,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e99e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:26:15, skipping insertion in model container [2025-03-04 15:26:15,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:14" (2/3) ... [2025-03-04 15:26:15,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e99e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:26:15, skipping insertion in model container [2025-03-04 15:26:15,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:15" (3/3) ... [2025-03-04 15:26:15,423 INFO L128 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2025-03-04 15:26:15,437 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:26:15,441 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibonacci.wvr.c that has 3 procedures, 87 locations, 1 initial locations, 2 loop locations, and 28 error locations. [2025-03-04 15:26:15,441 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:26:15,521 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:26:15,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 206 flow [2025-03-04 15:26:15,597 INFO L124 PetriNetUnfolderBase]: 10/94 cut-off events. [2025-03-04 15:26:15,600 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:26:15,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 10/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 312 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2025-03-04 15:26:15,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 96 transitions, 206 flow [2025-03-04 15:26:15,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 193 flow [2025-03-04 15:26:15,617 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:26:15,627 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f7bf8f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:26:15,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2025-03-04 15:26:15,635 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:26:15,636 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-03-04 15:26:15,636 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:26:15,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:15,636 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 15:26:15,637 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:15,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2140221991, now seen corresponding path program 1 times [2025-03-04 15:26:15,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:15,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701964320] [2025-03-04 15:26:15,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:15,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:15,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:26:15,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:26:15,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:15,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:15,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:15,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701964320] [2025-03-04 15:26:15,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701964320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:15,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:15,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:15,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928912941] [2025-03-04 15:26:15,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:15,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:15,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:15,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:15,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:15,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2025-03-04 15:26:15,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:15,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:15,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2025-03-04 15:26:15,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:16,194 INFO L124 PetriNetUnfolderBase]: 755/1896 cut-off events. [2025-03-04 15:26:16,195 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2025-03-04 15:26:16,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 1896 events. 755/1896 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13351 event pairs, 282 based on Foata normal form. 60/1535 useless extension candidates. Maximal degree in co-relation 2988. Up to 626 conditions per place. [2025-03-04 15:26:16,211 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 50 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2025-03-04 15:26:16,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 107 transitions, 332 flow [2025-03-04 15:26:16,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2025-03-04 15:26:16,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2025-03-04 15:26:16,222 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 193 flow. Second operand 4 states and 279 transitions. [2025-03-04 15:26:16,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 107 transitions, 332 flow [2025-03-04 15:26:16,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 107 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:16,229 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 190 flow [2025-03-04 15:26:16,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2025-03-04 15:26:16,234 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -2 predicate places. [2025-03-04 15:26:16,235 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 190 flow [2025-03-04 15:26:16,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:16,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:16,236 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:16,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:26:16,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:16,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:16,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1922372891, now seen corresponding path program 1 times [2025-03-04 15:26:16,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:16,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025987761] [2025-03-04 15:26:16,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:16,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:16,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:26:16,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:26:16,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:16,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:16,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025987761] [2025-03-04 15:26:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025987761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:16,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:16,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:16,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299692117] [2025-03-04 15:26:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:16,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:16,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:16,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:16,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:16,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2025-03-04 15:26:16,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:16,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:16,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2025-03-04 15:26:16,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:16,517 INFO L124 PetriNetUnfolderBase]: 651/1754 cut-off events. [2025-03-04 15:26:16,517 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-03-04 15:26:16,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2795 conditions, 1754 events. 651/1754 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12469 event pairs, 266 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 2440. Up to 626 conditions per place. [2025-03-04 15:26:16,525 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 48 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2025-03-04 15:26:16,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 106 transitions, 326 flow [2025-03-04 15:26:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2025-03-04 15:26:16,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-04 15:26:16,528 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 190 flow. Second operand 4 states and 280 transitions. [2025-03-04 15:26:16,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 106 transitions, 326 flow [2025-03-04 15:26:16,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 106 transitions, 320 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:16,530 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 188 flow [2025-03-04 15:26:16,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2025-03-04 15:26:16,530 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -3 predicate places. [2025-03-04 15:26:16,530 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 188 flow [2025-03-04 15:26:16,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:16,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:16,531 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:16,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:26:16,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:16,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2066447454, now seen corresponding path program 1 times [2025-03-04 15:26:16,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:16,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640718219] [2025-03-04 15:26:16,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:16,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:16,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:26:16,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:26:16,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:16,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:16,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:16,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640718219] [2025-03-04 15:26:16,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640718219] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:16,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:16,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:16,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516478184] [2025-03-04 15:26:16,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:16,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:16,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:16,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:16,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:16,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2025-03-04 15:26:16,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:16,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:16,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2025-03-04 15:26:16,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:16,846 INFO L124 PetriNetUnfolderBase]: 749/1903 cut-off events. [2025-03-04 15:26:16,846 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2025-03-04 15:26:16,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1903 events. 749/1903 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13682 event pairs, 269 based on Foata normal form. 58/1556 useless extension candidates. Maximal degree in co-relation 2729. Up to 658 conditions per place. [2025-03-04 15:26:16,853 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 49 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2025-03-04 15:26:16,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 103 transitions, 325 flow [2025-03-04 15:26:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2025-03-04 15:26:16,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2025-03-04 15:26:16,854 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 188 flow. Second operand 4 states and 278 transitions. [2025-03-04 15:26:16,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 103 transitions, 325 flow [2025-03-04 15:26:16,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 103 transitions, 315 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:16,856 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 184 flow [2025-03-04 15:26:16,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2025-03-04 15:26:16,856 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2025-03-04 15:26:16,856 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 184 flow [2025-03-04 15:26:16,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:16,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:16,857 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:16,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:26:16,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:16,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash -364637713, now seen corresponding path program 1 times [2025-03-04 15:26:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:16,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400160607] [2025-03-04 15:26:16,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:16,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:16,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:26:16,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:26:16,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:16,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400160607] [2025-03-04 15:26:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400160607] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438143581] [2025-03-04 15:26:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:16,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:16,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:16,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:16,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2025-03-04 15:26:16,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:16,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:16,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2025-03-04 15:26:16,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:17,094 INFO L124 PetriNetUnfolderBase]: 647/1772 cut-off events. [2025-03-04 15:26:17,094 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-04 15:26:17,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 1772 events. 647/1772 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12901 event pairs, 269 based on Foata normal form. 0/1432 useless extension candidates. Maximal degree in co-relation 2462. Up to 658 conditions per place. [2025-03-04 15:26:17,104 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 47 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2025-03-04 15:26:17,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 102 transitions, 315 flow [2025-03-04 15:26:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2025-03-04 15:26:17,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2025-03-04 15:26:17,106 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 184 flow. Second operand 4 states and 279 transitions. [2025-03-04 15:26:17,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 102 transitions, 315 flow [2025-03-04 15:26:17,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 102 transitions, 309 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:17,108 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 182 flow [2025-03-04 15:26:17,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2025-03-04 15:26:17,109 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -6 predicate places. [2025-03-04 15:26:17,109 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 182 flow [2025-03-04 15:26:17,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:17,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:17,110 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:17,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:26:17,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:17,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 563476317, now seen corresponding path program 1 times [2025-03-04 15:26:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:17,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854379226] [2025-03-04 15:26:17,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:17,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:17,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:26:17,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:26:17,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:17,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:17,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:17,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854379226] [2025-03-04 15:26:17,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854379226] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:17,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:17,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:17,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068505017] [2025-03-04 15:26:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:17,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:17,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:17,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:17,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2025-03-04 15:26:17,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:17,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:17,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2025-03-04 15:26:17,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:17,455 INFO L124 PetriNetUnfolderBase]: 899/1988 cut-off events. [2025-03-04 15:26:17,455 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2025-03-04 15:26:17,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 1988 events. 899/1988 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13032 event pairs, 298 based on Foata normal form. 0/1668 useless extension candidates. Maximal degree in co-relation 3058. Up to 626 conditions per place. [2025-03-04 15:26:17,466 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 68 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2025-03-04 15:26:17,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 120 transitions, 408 flow [2025-03-04 15:26:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:26:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:26:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 349 transitions. [2025-03-04 15:26:17,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7270833333333333 [2025-03-04 15:26:17,468 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 182 flow. Second operand 5 states and 349 transitions. [2025-03-04 15:26:17,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 120 transitions, 408 flow [2025-03-04 15:26:17,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 120 transitions, 394 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:17,473 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 191 flow [2025-03-04 15:26:17,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2025-03-04 15:26:17,474 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2025-03-04 15:26:17,474 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 191 flow [2025-03-04 15:26:17,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:17,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:17,474 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:17,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:26:17,475 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:17,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:17,475 INFO L85 PathProgramCache]: Analyzing trace with hash 563477310, now seen corresponding path program 1 times [2025-03-04 15:26:17,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:17,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717075754] [2025-03-04 15:26:17,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:17,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:17,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:26:17,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:26:17,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:17,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:17,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:17,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717075754] [2025-03-04 15:26:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717075754] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:17,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:17,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067278254] [2025-03-04 15:26:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:17,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:17,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:17,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:17,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:17,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-04 15:26:17,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:17,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:17,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-04 15:26:17,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:17,765 INFO L124 PetriNetUnfolderBase]: 957/2288 cut-off events. [2025-03-04 15:26:17,766 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2025-03-04 15:26:17,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 2288 events. 957/2288 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 16423 event pairs, 406 based on Foata normal form. 0/1915 useless extension candidates. Maximal degree in co-relation 3540. Up to 965 conditions per place. [2025-03-04 15:26:17,775 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 70 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2025-03-04 15:26:17,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 421 flow [2025-03-04 15:26:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2025-03-04 15:26:17,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2025-03-04 15:26:17,778 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 191 flow. Second operand 4 states and 292 transitions. [2025-03-04 15:26:17,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 421 flow [2025-03-04 15:26:17,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 412 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:17,781 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 211 flow [2025-03-04 15:26:17,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2025-03-04 15:26:17,782 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -3 predicate places. [2025-03-04 15:26:17,783 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 211 flow [2025-03-04 15:26:17,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:17,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:17,783 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:17,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:26:17,784 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:17,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash 287897262, now seen corresponding path program 1 times [2025-03-04 15:26:17,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:17,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870617370] [2025-03-04 15:26:17,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:17,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:17,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:26:17,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:26:17,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:17,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:17,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870617370] [2025-03-04 15:26:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870617370] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:17,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:26:17,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719700985] [2025-03-04 15:26:17,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:17,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:17,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:17,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:17,896 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-04 15:26:17,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:17,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:17,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-04 15:26:17,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:18,149 INFO L124 PetriNetUnfolderBase]: 1125/2394 cut-off events. [2025-03-04 15:26:18,150 INFO L125 PetriNetUnfolderBase]: For 447/455 co-relation queries the response was YES. [2025-03-04 15:26:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 2394 events. 1125/2394 cut-off events. For 447/455 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 16206 event pairs, 258 based on Foata normal form. 68/2151 useless extension candidates. Maximal degree in co-relation 4076. Up to 656 conditions per place. [2025-03-04 15:26:18,162 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 83 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2025-03-04 15:26:18,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 139 transitions, 503 flow [2025-03-04 15:26:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2025-03-04 15:26:18,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2025-03-04 15:26:18,167 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 211 flow. Second operand 6 states and 402 transitions. [2025-03-04 15:26:18,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 139 transitions, 503 flow [2025-03-04 15:26:18,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:18,170 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 233 flow [2025-03-04 15:26:18,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2025-03-04 15:26:18,171 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 1 predicate places. [2025-03-04 15:26:18,171 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 233 flow [2025-03-04 15:26:18,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:18,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:18,171 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:18,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 15:26:18,172 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:18,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1769542801, now seen corresponding path program 1 times [2025-03-04 15:26:18,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:18,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802574895] [2025-03-04 15:26:18,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:18,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:18,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:26:18,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:26:18,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:18,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:18,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:18,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802574895] [2025-03-04 15:26:18,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802574895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:18,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:18,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:18,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571360977] [2025-03-04 15:26:18,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:18,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:18,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:18,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:18,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:18,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2025-03-04 15:26:18,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:18,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:18,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2025-03-04 15:26:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:18,494 INFO L124 PetriNetUnfolderBase]: 1068/2362 cut-off events. [2025-03-04 15:26:18,494 INFO L125 PetriNetUnfolderBase]: For 1122/1218 co-relation queries the response was YES. [2025-03-04 15:26:18,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4751 conditions, 2362 events. 1068/2362 cut-off events. For 1122/1218 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 16417 event pairs, 327 based on Foata normal form. 72/2066 useless extension candidates. Maximal degree in co-relation 4256. Up to 798 conditions per place. [2025-03-04 15:26:18,506 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 78 selfloop transitions, 5 changer transitions 0/128 dead transitions. [2025-03-04 15:26:18,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 128 transitions, 559 flow [2025-03-04 15:26:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:26:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:26:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2025-03-04 15:26:18,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2025-03-04 15:26:18,511 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 233 flow. Second operand 5 states and 347 transitions. [2025-03-04 15:26:18,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 128 transitions, 559 flow [2025-03-04 15:26:18,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 128 transitions, 528 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:26:18,516 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 235 flow [2025-03-04 15:26:18,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2025-03-04 15:26:18,518 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 1 predicate places. [2025-03-04 15:26:18,519 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 235 flow [2025-03-04 15:26:18,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:18,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:18,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:18,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 15:26:18,519 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:18,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1769543794, now seen corresponding path program 1 times [2025-03-04 15:26:18,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:18,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593526024] [2025-03-04 15:26:18,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:18,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:18,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:26:18,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:26:18,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:18,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:18,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593526024] [2025-03-04 15:26:18,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593526024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:18,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:18,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667479736] [2025-03-04 15:26:18,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:18,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:18,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:18,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:18,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-04 15:26:18,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:18,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:18,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-04 15:26:18,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:18,793 INFO L124 PetriNetUnfolderBase]: 1160/2695 cut-off events. [2025-03-04 15:26:18,793 INFO L125 PetriNetUnfolderBase]: For 837/933 co-relation queries the response was YES. [2025-03-04 15:26:18,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 2695 events. 1160/2695 cut-off events. For 837/933 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 20051 event pairs, 515 based on Foata normal form. 76/2434 useless extension candidates. Maximal degree in co-relation 4821. Up to 1200 conditions per place. [2025-03-04 15:26:18,803 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 80 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2025-03-04 15:26:18,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 131 transitions, 555 flow [2025-03-04 15:26:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2025-03-04 15:26:18,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2025-03-04 15:26:18,805 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 235 flow. Second operand 4 states and 290 transitions. [2025-03-04 15:26:18,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 131 transitions, 555 flow [2025-03-04 15:26:18,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 131 transitions, 546 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:18,808 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 255 flow [2025-03-04 15:26:18,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2025-03-04 15:26:18,809 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2025-03-04 15:26:18,809 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 255 flow [2025-03-04 15:26:18,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:18,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:18,810 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:18,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 15:26:18,810 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:18,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1253570084, now seen corresponding path program 1 times [2025-03-04 15:26:18,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:18,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516585799] [2025-03-04 15:26:18,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:18,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:18,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:26:18,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:26:18,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:18,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:18,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:18,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516585799] [2025-03-04 15:26:18,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516585799] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:18,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:18,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:26:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782285665] [2025-03-04 15:26:18,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:18,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:18,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:18,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:18,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:18,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-04 15:26:18,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:18,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:18,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-04 15:26:18,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:19,142 INFO L124 PetriNetUnfolderBase]: 1287/2764 cut-off events. [2025-03-04 15:26:19,143 INFO L125 PetriNetUnfolderBase]: For 1007/1048 co-relation queries the response was YES. [2025-03-04 15:26:19,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5871 conditions, 2764 events. 1287/2764 cut-off events. For 1007/1048 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19413 event pairs, 497 based on Foata normal form. 63/2546 useless extension candidates. Maximal degree in co-relation 5335. Up to 1207 conditions per place. [2025-03-04 15:26:19,154 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 118 selfloop transitions, 8 changer transitions 0/170 dead transitions. [2025-03-04 15:26:19,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 170 transitions, 767 flow [2025-03-04 15:26:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2025-03-04 15:26:19,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2025-03-04 15:26:19,155 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 255 flow. Second operand 6 states and 424 transitions. [2025-03-04 15:26:19,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 170 transitions, 767 flow [2025-03-04 15:26:19,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 170 transitions, 751 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-04 15:26:19,161 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 270 flow [2025-03-04 15:26:19,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2025-03-04 15:26:19,162 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2025-03-04 15:26:19,162 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 270 flow [2025-03-04 15:26:19,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:19,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:19,162 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:19,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 15:26:19,162 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:19,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -978747355, now seen corresponding path program 1 times [2025-03-04 15:26:19,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:19,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849468764] [2025-03-04 15:26:19,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:19,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:19,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:26:19,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:26:19,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:19,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:19,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:19,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849468764] [2025-03-04 15:26:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849468764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:19,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:19,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:26:19,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904059021] [2025-03-04 15:26:19,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:19,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:19,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:19,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:19,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-04 15:26:19,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:19,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:19,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-04 15:26:19,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:19,525 INFO L124 PetriNetUnfolderBase]: 1293/2737 cut-off events. [2025-03-04 15:26:19,525 INFO L125 PetriNetUnfolderBase]: For 2081/2177 co-relation queries the response was YES. [2025-03-04 15:26:19,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6028 conditions, 2737 events. 1293/2737 cut-off events. For 2081/2177 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19246 event pairs, 327 based on Foata normal form. 162/2599 useless extension candidates. Maximal degree in co-relation 5467. Up to 811 conditions per place. [2025-03-04 15:26:19,536 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 96 selfloop transitions, 9 changer transitions 0/150 dead transitions. [2025-03-04 15:26:19,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 150 transitions, 726 flow [2025-03-04 15:26:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2025-03-04 15:26:19,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2025-03-04 15:26:19,538 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 270 flow. Second operand 6 states and 399 transitions. [2025-03-04 15:26:19,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 150 transitions, 726 flow [2025-03-04 15:26:19,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 150 transitions, 693 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-04 15:26:19,543 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 286 flow [2025-03-04 15:26:19,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2025-03-04 15:26:19,543 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2025-03-04 15:26:19,543 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 286 flow [2025-03-04 15:26:19,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:19,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:19,544 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:19,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 15:26:19,544 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:19,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:19,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1791383698, now seen corresponding path program 1 times [2025-03-04 15:26:19,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:19,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100286460] [2025-03-04 15:26:19,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:19,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:19,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:26:19,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:26:19,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:19,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100286460] [2025-03-04 15:26:19,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100286460] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:19,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:19,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:26:19,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037470415] [2025-03-04 15:26:19,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:19,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:19,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:19,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:19,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 96 [2025-03-04 15:26:19,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:19,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:19,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 96 [2025-03-04 15:26:19,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:19,966 INFO L124 PetriNetUnfolderBase]: 1610/3523 cut-off events. [2025-03-04 15:26:19,966 INFO L125 PetriNetUnfolderBase]: For 2258/2387 co-relation queries the response was YES. [2025-03-04 15:26:19,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7808 conditions, 3523 events. 1610/3523 cut-off events. For 2258/2387 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 26141 event pairs, 538 based on Foata normal form. 161/3259 useless extension candidates. Maximal degree in co-relation 7159. Up to 1266 conditions per place. [2025-03-04 15:26:19,981 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 110 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2025-03-04 15:26:19,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 160 transitions, 783 flow [2025-03-04 15:26:19,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:26:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:26:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2025-03-04 15:26:19,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.74375 [2025-03-04 15:26:19,983 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 286 flow. Second operand 5 states and 357 transitions. [2025-03-04 15:26:19,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 160 transitions, 783 flow [2025-03-04 15:26:19,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 160 transitions, 743 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:26:19,989 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 312 flow [2025-03-04 15:26:19,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2025-03-04 15:26:19,989 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 12 predicate places. [2025-03-04 15:26:19,989 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 312 flow [2025-03-04 15:26:19,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:19,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:19,990 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:19,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 15:26:19,990 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:19,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash 642292664, now seen corresponding path program 1 times [2025-03-04 15:26:19,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:19,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634049886] [2025-03-04 15:26:19,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:19,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:19,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:26:19,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:26:19,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:19,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:20,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:20,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634049886] [2025-03-04 15:26:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634049886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:20,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:20,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:20,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295962738] [2025-03-04 15:26:20,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:20,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:20,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:20,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:20,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:20,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-04 15:26:20,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:20,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:20,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-04 15:26:20,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:20,265 INFO L124 PetriNetUnfolderBase]: 1686/3641 cut-off events. [2025-03-04 15:26:20,265 INFO L125 PetriNetUnfolderBase]: For 2820/2923 co-relation queries the response was YES. [2025-03-04 15:26:20,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8194 conditions, 3641 events. 1686/3641 cut-off events. For 2820/2923 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 27708 event pairs, 646 based on Foata normal form. 146/3479 useless extension candidates. Maximal degree in co-relation 7529. Up to 1534 conditions per place. [2025-03-04 15:26:20,276 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 83 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2025-03-04 15:26:20,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 135 transitions, 670 flow [2025-03-04 15:26:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2025-03-04 15:26:20,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2025-03-04 15:26:20,278 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 312 flow. Second operand 4 states and 287 transitions. [2025-03-04 15:26:20,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 135 transitions, 670 flow [2025-03-04 15:26:20,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 135 transitions, 659 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:26:20,284 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 321 flow [2025-03-04 15:26:20,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2025-03-04 15:26:20,284 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2025-03-04 15:26:20,285 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 321 flow [2025-03-04 15:26:20,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:20,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:20,285 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:20,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:26:20,285 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:20,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash -301679582, now seen corresponding path program 1 times [2025-03-04 15:26:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109005291] [2025-03-04 15:26:20,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:20,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:26:20,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:26:20,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:20,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:20,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109005291] [2025-03-04 15:26:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109005291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:20,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:26:20,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910957191] [2025-03-04 15:26:20,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:20,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:20,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:20,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:20,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2025-03-04 15:26:20,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:20,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:20,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2025-03-04 15:26:20,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:20,786 INFO L124 PetriNetUnfolderBase]: 2064/4568 cut-off events. [2025-03-04 15:26:20,786 INFO L125 PetriNetUnfolderBase]: For 3817/3930 co-relation queries the response was YES. [2025-03-04 15:26:20,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10607 conditions, 4568 events. 2064/4568 cut-off events. For 3817/3930 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 36463 event pairs, 441 based on Foata normal form. 257/4439 useless extension candidates. Maximal degree in co-relation 9840. Up to 1031 conditions per place. [2025-03-04 15:26:20,802 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 133 selfloop transitions, 12 changer transitions 0/185 dead transitions. [2025-03-04 15:26:20,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 185 transitions, 982 flow [2025-03-04 15:26:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 417 transitions. [2025-03-04 15:26:20,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2025-03-04 15:26:20,804 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 321 flow. Second operand 6 states and 417 transitions. [2025-03-04 15:26:20,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 185 transitions, 982 flow [2025-03-04 15:26:20,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:26:20,815 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 356 flow [2025-03-04 15:26:20,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2025-03-04 15:26:20,816 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 18 predicate places. [2025-03-04 15:26:20,816 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 356 flow [2025-03-04 15:26:20,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:20,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:20,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:20,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-04 15:26:20,817 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:20,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash 21652905, now seen corresponding path program 1 times [2025-03-04 15:26:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370768938] [2025-03-04 15:26:20,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:20,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:26:20,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:26:20,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:20,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:20,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:20,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370768938] [2025-03-04 15:26:20,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370768938] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:20,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:20,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:20,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564559248] [2025-03-04 15:26:20,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:20,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:20,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:20,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:20,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:20,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-04 15:26:20,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:20,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:20,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-04 15:26:20,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:21,202 INFO L124 PetriNetUnfolderBase]: 2462/5448 cut-off events. [2025-03-04 15:26:21,202 INFO L125 PetriNetUnfolderBase]: For 6332/6501 co-relation queries the response was YES. [2025-03-04 15:26:21,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12562 conditions, 5448 events. 2462/5448 cut-off events. For 6332/6501 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 45297 event pairs, 1053 based on Foata normal form. 263/5081 useless extension candidates. Maximal degree in co-relation 11737. Up to 2343 conditions per place. [2025-03-04 15:26:21,224 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 97 selfloop transitions, 7 changer transitions 0/145 dead transitions. [2025-03-04 15:26:21,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 832 flow [2025-03-04 15:26:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2025-03-04 15:26:21,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.765625 [2025-03-04 15:26:21,226 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 356 flow. Second operand 4 states and 294 transitions. [2025-03-04 15:26:21,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 832 flow [2025-03-04 15:26:21,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 821 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:21,240 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 393 flow [2025-03-04 15:26:21,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2025-03-04 15:26:21,241 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 22 predicate places. [2025-03-04 15:26:21,241 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 393 flow [2025-03-04 15:26:21,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:21,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:21,241 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:21,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-04 15:26:21,242 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:21,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:21,242 INFO L85 PathProgramCache]: Analyzing trace with hash 336767980, now seen corresponding path program 1 times [2025-03-04 15:26:21,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:21,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105394576] [2025-03-04 15:26:21,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:21,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:21,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:26:21,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:26:21,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:21,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:21,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:21,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105394576] [2025-03-04 15:26:21,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105394576] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:21,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:21,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:21,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327019102] [2025-03-04 15:26:21,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:21,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:21,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:21,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:21,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:21,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-04 15:26:21,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:21,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:21,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-04 15:26:21,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:21,750 INFO L124 PetriNetUnfolderBase]: 3142/7061 cut-off events. [2025-03-04 15:26:21,750 INFO L125 PetriNetUnfolderBase]: For 10539/10878 co-relation queries the response was YES. [2025-03-04 15:26:21,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17174 conditions, 7061 events. 3142/7061 cut-off events. For 10539/10878 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 61868 event pairs, 1088 based on Foata normal form. 489/6796 useless extension candidates. Maximal degree in co-relation 16136. Up to 2506 conditions per place. [2025-03-04 15:26:21,782 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 99 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2025-03-04 15:26:21,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 149 transitions, 873 flow [2025-03-04 15:26:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2025-03-04 15:26:21,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2025-03-04 15:26:21,783 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 393 flow. Second operand 4 states and 296 transitions. [2025-03-04 15:26:21,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 149 transitions, 873 flow [2025-03-04 15:26:21,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 149 transitions, 873 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:26:21,813 INFO L231 Difference]: Finished difference. Result has 116 places, 100 transitions, 473 flow [2025-03-04 15:26:21,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=473, PETRI_PLACES=116, PETRI_TRANSITIONS=100} [2025-03-04 15:26:21,814 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 27 predicate places. [2025-03-04 15:26:21,814 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 100 transitions, 473 flow [2025-03-04 15:26:21,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:21,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:21,814 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:21,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 15:26:21,814 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:21,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:21,815 INFO L85 PathProgramCache]: Analyzing trace with hash 671240726, now seen corresponding path program 1 times [2025-03-04 15:26:21,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:21,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340769266] [2025-03-04 15:26:21,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:21,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 15:26:21,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 15:26:21,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:21,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:21,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340769266] [2025-03-04 15:26:21,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340769266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:21,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:21,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:26:21,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036741552] [2025-03-04 15:26:21,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:21,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:21,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:21,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:21,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:21,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2025-03-04 15:26:21,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 100 transitions, 473 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:21,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:21,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2025-03-04 15:26:21,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:22,738 INFO L124 PetriNetUnfolderBase]: 4423/10056 cut-off events. [2025-03-04 15:26:22,738 INFO L125 PetriNetUnfolderBase]: For 20173/20622 co-relation queries the response was YES. [2025-03-04 15:26:22,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25856 conditions, 10056 events. 4423/10056 cut-off events. For 20173/20622 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 95089 event pairs, 1110 based on Foata normal form. 495/9630 useless extension candidates. Maximal degree in co-relation 24601. Up to 2547 conditions per place. [2025-03-04 15:26:22,782 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 195 selfloop transitions, 14 changer transitions 0/250 dead transitions. [2025-03-04 15:26:22,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 250 transitions, 1899 flow [2025-03-04 15:26:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:26:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:26:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 481 transitions. [2025-03-04 15:26:22,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7157738095238095 [2025-03-04 15:26:22,783 INFO L175 Difference]: Start difference. First operand has 116 places, 100 transitions, 473 flow. Second operand 7 states and 481 transitions. [2025-03-04 15:26:22,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 250 transitions, 1899 flow [2025-03-04 15:26:22,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 250 transitions, 1899 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:26:22,842 INFO L231 Difference]: Finished difference. Result has 124 places, 105 transitions, 548 flow [2025-03-04 15:26:22,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=548, PETRI_PLACES=124, PETRI_TRANSITIONS=105} [2025-03-04 15:26:22,843 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 35 predicate places. [2025-03-04 15:26:22,843 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 105 transitions, 548 flow [2025-03-04 15:26:22,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:22,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:22,843 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:22,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-04 15:26:22,843 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:22,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash 210995624, now seen corresponding path program 1 times [2025-03-04 15:26:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:22,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946196684] [2025-03-04 15:26:22,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:22,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 15:26:22,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 15:26:22,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:22,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:22,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946196684] [2025-03-04 15:26:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946196684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:26:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625148552] [2025-03-04 15:26:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:22,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:22,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:22,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:22,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-04 15:26:22,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 105 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:22,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:22,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-04 15:26:22,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:23,685 INFO L124 PetriNetUnfolderBase]: 4009/9748 cut-off events. [2025-03-04 15:26:23,685 INFO L125 PetriNetUnfolderBase]: For 24293/24868 co-relation queries the response was YES. [2025-03-04 15:26:23,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26493 conditions, 9748 events. 4009/9748 cut-off events. For 24293/24868 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 95010 event pairs, 1242 based on Foata normal form. 431/9271 useless extension candidates. Maximal degree in co-relation 25170. Up to 2841 conditions per place. [2025-03-04 15:26:23,728 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 138 selfloop transitions, 11 changer transitions 0/194 dead transitions. [2025-03-04 15:26:23,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 194 transitions, 1400 flow [2025-03-04 15:26:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:26:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:26:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2025-03-04 15:26:23,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2025-03-04 15:26:23,730 INFO L175 Difference]: Start difference. First operand has 124 places, 105 transitions, 548 flow. Second operand 5 states and 355 transitions. [2025-03-04 15:26:23,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 194 transitions, 1400 flow [2025-03-04 15:26:23,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 194 transitions, 1362 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-04 15:26:23,800 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 585 flow [2025-03-04 15:26:23,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2025-03-04 15:26:23,801 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 37 predicate places. [2025-03-04 15:26:23,801 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 585 flow [2025-03-04 15:26:23,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:23,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:23,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:23,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-04 15:26:23,801 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:23,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2142763748, now seen corresponding path program 1 times [2025-03-04 15:26:23,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:23,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542220646] [2025-03-04 15:26:23,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:23,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:23,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 15:26:23,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 15:26:23,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:23,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542220646] [2025-03-04 15:26:23,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542220646] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:23,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:23,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:26:23,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195361851] [2025-03-04 15:26:23,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:23,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:26:23,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:23,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:26:23,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:26:23,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2025-03-04 15:26:23,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 585 flow. Second operand has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:23,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:23,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2025-03-04 15:26:23,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:25,018 INFO L124 PetriNetUnfolderBase]: 6452/11905 cut-off events. [2025-03-04 15:26:25,018 INFO L125 PetriNetUnfolderBase]: For 30590/31803 co-relation queries the response was YES. [2025-03-04 15:26:25,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35939 conditions, 11905 events. 6452/11905 cut-off events. For 30590/31803 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 97724 event pairs, 304 based on Foata normal form. 673/12126 useless extension candidates. Maximal degree in co-relation 34405. Up to 5411 conditions per place. [2025-03-04 15:26:25,099 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 161 selfloop transitions, 17 changer transitions 0/217 dead transitions. [2025-03-04 15:26:25,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 217 transitions, 1603 flow [2025-03-04 15:26:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:26:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:26:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 462 transitions. [2025-03-04 15:26:25,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-03-04 15:26:25,101 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 585 flow. Second operand 7 states and 462 transitions. [2025-03-04 15:26:25,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 217 transitions, 1603 flow [2025-03-04 15:26:25,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 217 transitions, 1599 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:25,193 INFO L231 Difference]: Finished difference. Result has 130 places, 105 transitions, 613 flow [2025-03-04 15:26:25,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=130, PETRI_TRANSITIONS=105} [2025-03-04 15:26:25,194 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 41 predicate places. [2025-03-04 15:26:25,194 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 105 transitions, 613 flow [2025-03-04 15:26:25,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:25,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:25,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:25,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-04 15:26:25,194 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:25,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash -666404051, now seen corresponding path program 1 times [2025-03-04 15:26:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:25,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365810013] [2025-03-04 15:26:25,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:25,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:26:25,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:26:25,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:25,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:25,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:25,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365810013] [2025-03-04 15:26:25,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365810013] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:25,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:26:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601712085] [2025-03-04 15:26:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:25,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:25,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:25,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:25,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-04 15:26:25,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 105 transitions, 613 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:25,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:25,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-04 15:26:25,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:26,426 INFO L124 PetriNetUnfolderBase]: 7003/16725 cut-off events. [2025-03-04 15:26:26,426 INFO L125 PetriNetUnfolderBase]: For 57025/57774 co-relation queries the response was YES. [2025-03-04 15:26:26,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47250 conditions, 16725 events. 7003/16725 cut-off events. For 57025/57774 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 177161 event pairs, 2552 based on Foata normal form. 743/15909 useless extension candidates. Maximal degree in co-relation 45494. Up to 5614 conditions per place. [2025-03-04 15:26:26,511 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 190 selfloop transitions, 13 changer transitions 0/242 dead transitions. [2025-03-04 15:26:26,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 242 transitions, 2196 flow [2025-03-04 15:26:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2025-03-04 15:26:26,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7621527777777778 [2025-03-04 15:26:26,512 INFO L175 Difference]: Start difference. First operand has 130 places, 105 transitions, 613 flow. Second operand 6 states and 439 transitions. [2025-03-04 15:26:26,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 242 transitions, 2196 flow [2025-03-04 15:26:26,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 242 transitions, 2071 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 15:26:26,669 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 721 flow [2025-03-04 15:26:26,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=721, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2025-03-04 15:26:26,669 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 44 predicate places. [2025-03-04 15:26:26,669 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 721 flow [2025-03-04 15:26:26,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:26,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:26,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:26,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-04 15:26:26,670 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:26,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2001167385, now seen corresponding path program 1 times [2025-03-04 15:26:26,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:26,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115756527] [2025-03-04 15:26:26,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:26,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:26:26,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:26:26,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:26,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:26,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:26,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115756527] [2025-03-04 15:26:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115756527] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:26,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:26,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 15:26:26,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076815601] [2025-03-04 15:26:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:26,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 15:26:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:26,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 15:26:26,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:26:26,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2025-03-04 15:26:26,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 721 flow. Second operand has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:26,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:26,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2025-03-04 15:26:26,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:28,182 INFO L124 PetriNetUnfolderBase]: 8814/16902 cut-off events. [2025-03-04 15:26:28,182 INFO L125 PetriNetUnfolderBase]: For 61298/62499 co-relation queries the response was YES. [2025-03-04 15:26:28,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53386 conditions, 16902 events. 8814/16902 cut-off events. For 61298/62499 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 153558 event pairs, 464 based on Foata normal form. 1461/17640 useless extension candidates. Maximal degree in co-relation 51539. Up to 3780 conditions per place. [2025-03-04 15:26:28,296 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 254 selfloop transitions, 24 changer transitions 0/318 dead transitions. [2025-03-04 15:26:28,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 318 transitions, 2855 flow [2025-03-04 15:26:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 15:26:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 15:26:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2025-03-04 15:26:28,297 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6261574074074074 [2025-03-04 15:26:28,297 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 721 flow. Second operand 9 states and 541 transitions. [2025-03-04 15:26:28,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 318 transitions, 2855 flow [2025-03-04 15:26:28,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 318 transitions, 2840 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:28,499 INFO L231 Difference]: Finished difference. Result has 140 places, 114 transitions, 774 flow [2025-03-04 15:26:28,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=140, PETRI_TRANSITIONS=114} [2025-03-04 15:26:28,500 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 51 predicate places. [2025-03-04 15:26:28,500 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 114 transitions, 774 flow [2025-03-04 15:26:28,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:28,500 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:28,500 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:28,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-04 15:26:28,500 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:28,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:28,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1511470928, now seen corresponding path program 1 times [2025-03-04 15:26:28,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:28,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448853866] [2025-03-04 15:26:28,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:28,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:28,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:26:28,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:26:28,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:28,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:28,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448853866] [2025-03-04 15:26:28,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448853866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:28,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:28,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286771434] [2025-03-04 15:26:28,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:28,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:28,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:28,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:28,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:28,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2025-03-04 15:26:28,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 114 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:28,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:28,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2025-03-04 15:26:28,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:29,836 INFO L124 PetriNetUnfolderBase]: 6318/14288 cut-off events. [2025-03-04 15:26:29,836 INFO L125 PetriNetUnfolderBase]: For 63525/64318 co-relation queries the response was YES. [2025-03-04 15:26:29,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47308 conditions, 14288 events. 6318/14288 cut-off events. For 63525/64318 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 142280 event pairs, 488 based on Foata normal form. 583/14688 useless extension candidates. Maximal degree in co-relation 45498. Up to 5838 conditions per place. [2025-03-04 15:26:29,969 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 123 selfloop transitions, 13 changer transitions 0/181 dead transitions. [2025-03-04 15:26:29,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 181 transitions, 1559 flow [2025-03-04 15:26:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:26:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:26:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 345 transitions. [2025-03-04 15:26:29,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2025-03-04 15:26:29,970 INFO L175 Difference]: Start difference. First operand has 140 places, 114 transitions, 774 flow. Second operand 5 states and 345 transitions. [2025-03-04 15:26:29,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 181 transitions, 1559 flow [2025-03-04 15:26:30,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 181 transitions, 1517 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-04 15:26:30,274 INFO L231 Difference]: Finished difference. Result has 136 places, 113 transitions, 749 flow [2025-03-04 15:26:30,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=749, PETRI_PLACES=136, PETRI_TRANSITIONS=113} [2025-03-04 15:26:30,274 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 47 predicate places. [2025-03-04 15:26:30,275 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 113 transitions, 749 flow [2025-03-04 15:26:30,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:30,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:30,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:30,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-04 15:26:30,275 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:30,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash 816310584, now seen corresponding path program 1 times [2025-03-04 15:26:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:30,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679607990] [2025-03-04 15:26:30,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:30,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:26:30,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:26:30,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:30,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:30,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679607990] [2025-03-04 15:26:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679607990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:30,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:30,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:26:30,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282673360] [2025-03-04 15:26:30,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:30,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:26:30,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:30,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:26:30,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:26:30,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2025-03-04 15:26:30,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 113 transitions, 749 flow. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:30,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:30,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2025-03-04 15:26:30,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:31,836 INFO L124 PetriNetUnfolderBase]: 10036/18633 cut-off events. [2025-03-04 15:26:31,836 INFO L125 PetriNetUnfolderBase]: For 81480/83484 co-relation queries the response was YES. [2025-03-04 15:26:31,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63746 conditions, 18633 events. 10036/18633 cut-off events. For 81480/83484 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 165987 event pairs, 402 based on Foata normal form. 1732/19735 useless extension candidates. Maximal degree in co-relation 61724. Up to 8410 conditions per place. [2025-03-04 15:26:31,954 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 177 selfloop transitions, 20 changer transitions 0/236 dead transitions. [2025-03-04 15:26:31,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 236 transitions, 2253 flow [2025-03-04 15:26:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:26:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:26:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 458 transitions. [2025-03-04 15:26:31,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6815476190476191 [2025-03-04 15:26:31,955 INFO L175 Difference]: Start difference. First operand has 136 places, 113 transitions, 749 flow. Second operand 7 states and 458 transitions. [2025-03-04 15:26:31,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 236 transitions, 2253 flow [2025-03-04 15:26:32,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 236 transitions, 2131 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:26:32,230 INFO L231 Difference]: Finished difference. Result has 137 places, 112 transitions, 761 flow [2025-03-04 15:26:32,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=761, PETRI_PLACES=137, PETRI_TRANSITIONS=112} [2025-03-04 15:26:32,230 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 48 predicate places. [2025-03-04 15:26:32,230 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 112 transitions, 761 flow [2025-03-04 15:26:32,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:32,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:32,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:32,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-04 15:26:32,230 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:32,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:32,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1115457540, now seen corresponding path program 1 times [2025-03-04 15:26:32,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:32,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427522067] [2025-03-04 15:26:32,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:32,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:32,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:26:32,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:26:32,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:32,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:32,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:32,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427522067] [2025-03-04 15:26:32,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427522067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:32,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:32,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:32,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261057834] [2025-03-04 15:26:32,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:32,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:32,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:32,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:32,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:32,277 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2025-03-04 15:26:32,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 112 transitions, 761 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:32,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:32,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2025-03-04 15:26:32,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:33,154 INFO L124 PetriNetUnfolderBase]: 6244/14798 cut-off events. [2025-03-04 15:26:33,154 INFO L125 PetriNetUnfolderBase]: For 61182/62269 co-relation queries the response was YES. [2025-03-04 15:26:33,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46286 conditions, 14798 events. 6244/14798 cut-off events. For 61182/62269 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 152509 event pairs, 1412 based on Foata normal form. 1091/15191 useless extension candidates. Maximal degree in co-relation 44508. Up to 5778 conditions per place. [2025-03-04 15:26:33,221 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 84 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2025-03-04 15:26:33,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 141 transitions, 1200 flow [2025-03-04 15:26:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2025-03-04 15:26:33,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-04 15:26:33,222 INFO L175 Difference]: Start difference. First operand has 137 places, 112 transitions, 761 flow. Second operand 4 states and 280 transitions. [2025-03-04 15:26:33,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 141 transitions, 1200 flow [2025-03-04 15:26:33,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 141 transitions, 1166 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 15:26:33,392 INFO L231 Difference]: Finished difference. Result has 134 places, 110 transitions, 744 flow [2025-03-04 15:26:33,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=134, PETRI_TRANSITIONS=110} [2025-03-04 15:26:33,393 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 45 predicate places. [2025-03-04 15:26:33,393 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 110 transitions, 744 flow [2025-03-04 15:26:33,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:33,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:33,393 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:33,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-04 15:26:33,393 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:33,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:33,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1906647493, now seen corresponding path program 1 times [2025-03-04 15:26:33,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:33,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932679040] [2025-03-04 15:26:33,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:33,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:33,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:26:33,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:26:33,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:33,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932679040] [2025-03-04 15:26:33,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932679040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:33,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:33,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549252414] [2025-03-04 15:26:33,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:33,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:33,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:33,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:33,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-04 15:26:33,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 110 transitions, 744 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:33,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:33,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-04 15:26:33,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:35,317 INFO L124 PetriNetUnfolderBase]: 12268/28217 cut-off events. [2025-03-04 15:26:35,318 INFO L125 PetriNetUnfolderBase]: For 116083/117957 co-relation queries the response was YES. [2025-03-04 15:26:35,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89545 conditions, 28217 events. 12268/28217 cut-off events. For 116083/117957 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 297132 event pairs, 6718 based on Foata normal form. 1496/28868 useless extension candidates. Maximal degree in co-relation 84039. Up to 9734 conditions per place. [2025-03-04 15:26:35,558 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 153 selfloop transitions, 11 changer transitions 0/206 dead transitions. [2025-03-04 15:26:35,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 206 transitions, 1907 flow [2025-03-04 15:26:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2025-03-04 15:26:35,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8255208333333334 [2025-03-04 15:26:35,559 INFO L175 Difference]: Start difference. First operand has 134 places, 110 transitions, 744 flow. Second operand 4 states and 317 transitions. [2025-03-04 15:26:35,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 206 transitions, 1907 flow [2025-03-04 15:26:35,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 206 transitions, 1821 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:35,921 INFO L231 Difference]: Finished difference. Result has 136 places, 120 transitions, 886 flow [2025-03-04 15:26:35,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=886, PETRI_PLACES=136, PETRI_TRANSITIONS=120} [2025-03-04 15:26:35,922 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 47 predicate places. [2025-03-04 15:26:35,922 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 120 transitions, 886 flow [2025-03-04 15:26:35,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:35,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:35,922 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:35,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-04 15:26:35,922 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:35,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash 902398667, now seen corresponding path program 1 times [2025-03-04 15:26:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:35,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271541716] [2025-03-04 15:26:35,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:35,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:26:35,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:26:35,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:35,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:35,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271541716] [2025-03-04 15:26:35,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271541716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:35,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:35,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 15:26:35,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008174973] [2025-03-04 15:26:35,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:35,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:35,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:35,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:35,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:36,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-04 15:26:36,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 120 transitions, 886 flow. Second operand has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:36,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:36,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-04 15:26:36,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:38,281 INFO L124 PetriNetUnfolderBase]: 13390/28828 cut-off events. [2025-03-04 15:26:38,281 INFO L125 PetriNetUnfolderBase]: For 117189/119132 co-relation queries the response was YES. [2025-03-04 15:26:38,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93204 conditions, 28828 events. 13390/28828 cut-off events. For 117189/119132 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 291792 event pairs, 6248 based on Foata normal form. 1463/29542 useless extension candidates. Maximal degree in co-relation 90623. Up to 13021 conditions per place. [2025-03-04 15:26:38,486 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 204 selfloop transitions, 11 changer transitions 0/253 dead transitions. [2025-03-04 15:26:38,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 253 transitions, 2336 flow [2025-03-04 15:26:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 422 transitions. [2025-03-04 15:26:38,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7326388888888888 [2025-03-04 15:26:38,487 INFO L175 Difference]: Start difference. First operand has 136 places, 120 transitions, 886 flow. Second operand 6 states and 422 transitions. [2025-03-04 15:26:38,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 253 transitions, 2336 flow [2025-03-04 15:26:38,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 253 transitions, 2309 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:38,845 INFO L231 Difference]: Finished difference. Result has 140 places, 117 transitions, 849 flow [2025-03-04 15:26:38,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=849, PETRI_PLACES=140, PETRI_TRANSITIONS=117} [2025-03-04 15:26:38,846 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 51 predicate places. [2025-03-04 15:26:38,846 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 117 transitions, 849 flow [2025-03-04 15:26:38,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:38,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:38,846 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:38,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-04 15:26:38,846 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:38,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:38,847 INFO L85 PathProgramCache]: Analyzing trace with hash -953871449, now seen corresponding path program 1 times [2025-03-04 15:26:38,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:38,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297887907] [2025-03-04 15:26:38,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:38,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:38,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:26:38,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:26:38,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:38,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:38,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:38,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297887907] [2025-03-04 15:26:38,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297887907] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:38,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:38,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:38,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617994937] [2025-03-04 15:26:38,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:38,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:38,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:38,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:38,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:38,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2025-03-04 15:26:38,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 117 transitions, 849 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:38,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:38,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2025-03-04 15:26:38,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:41,116 INFO L124 PetriNetUnfolderBase]: 11148/26315 cut-off events. [2025-03-04 15:26:41,116 INFO L125 PetriNetUnfolderBase]: For 122750/124766 co-relation queries the response was YES. [2025-03-04 15:26:41,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82660 conditions, 26315 events. 11148/26315 cut-off events. For 122750/124766 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 278737 event pairs, 2588 based on Foata normal form. 1883/26945 useless extension candidates. Maximal degree in co-relation 80162. Up to 10640 conditions per place. [2025-03-04 15:26:41,352 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 100 selfloop transitions, 15 changer transitions 0/153 dead transitions. [2025-03-04 15:26:41,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 153 transitions, 1443 flow [2025-03-04 15:26:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2025-03-04 15:26:41,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2025-03-04 15:26:41,353 INFO L175 Difference]: Start difference. First operand has 140 places, 117 transitions, 849 flow. Second operand 4 states and 276 transitions. [2025-03-04 15:26:41,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 153 transitions, 1443 flow [2025-03-04 15:26:41,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 153 transitions, 1426 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:41,922 INFO L231 Difference]: Finished difference. Result has 139 places, 115 transitions, 852 flow [2025-03-04 15:26:41,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=852, PETRI_PLACES=139, PETRI_TRANSITIONS=115} [2025-03-04 15:26:41,922 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 50 predicate places. [2025-03-04 15:26:41,922 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 115 transitions, 852 flow [2025-03-04 15:26:41,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:41,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:41,923 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:41,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-04 15:26:41,923 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:41,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:41,923 INFO L85 PathProgramCache]: Analyzing trace with hash -464174992, now seen corresponding path program 1 times [2025-03-04 15:26:41,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:41,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487983037] [2025-03-04 15:26:41,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:41,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:26:41,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:26:41,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:41,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:42,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:42,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487983037] [2025-03-04 15:26:42,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487983037] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:42,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:42,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 15:26:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057709066] [2025-03-04 15:26:42,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:42,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 15:26:42,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:42,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 15:26:42,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:26:42,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2025-03-04 15:26:42,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 115 transitions, 852 flow. Second operand has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:42,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:42,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2025-03-04 15:26:42,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:44,203 INFO L124 PetriNetUnfolderBase]: 15834/29876 cut-off events. [2025-03-04 15:26:44,203 INFO L125 PetriNetUnfolderBase]: For 163918/167153 co-relation queries the response was YES. [2025-03-04 15:26:44,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104707 conditions, 29876 events. 15834/29876 cut-off events. For 163918/167153 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 273609 event pairs, 738 based on Foata normal form. 3746/32493 useless extension candidates. Maximal degree in co-relation 101999. Up to 7260 conditions per place. [2025-03-04 15:26:44,442 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 282 selfloop transitions, 28 changer transitions 0/343 dead transitions. [2025-03-04 15:26:44,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 343 transitions, 3716 flow [2025-03-04 15:26:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 15:26:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 15:26:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 534 transitions. [2025-03-04 15:26:44,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2025-03-04 15:26:44,443 INFO L175 Difference]: Start difference. First operand has 139 places, 115 transitions, 852 flow. Second operand 9 states and 534 transitions. [2025-03-04 15:26:44,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 343 transitions, 3716 flow [2025-03-04 15:26:45,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 343 transitions, 3686 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:45,329 INFO L231 Difference]: Finished difference. Result has 144 places, 115 transitions, 888 flow [2025-03-04 15:26:45,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=144, PETRI_TRANSITIONS=115} [2025-03-04 15:26:45,329 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 55 predicate places. [2025-03-04 15:26:45,329 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 115 transitions, 888 flow [2025-03-04 15:26:45,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:45,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:45,330 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:45,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-04 15:26:45,330 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:45,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:45,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1504522119, now seen corresponding path program 1 times [2025-03-04 15:26:45,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:45,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623701485] [2025-03-04 15:26:45,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:45,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:45,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:26:45,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:26:45,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:45,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:45,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:45,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623701485] [2025-03-04 15:26:45,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623701485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:45,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:45,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:45,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38576837] [2025-03-04 15:26:45,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:45,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:45,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:45,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:45,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-04 15:26:45,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 115 transitions, 888 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:45,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:45,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-04 15:26:45,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:49,353 INFO L124 PetriNetUnfolderBase]: 22270/49423 cut-off events. [2025-03-04 15:26:49,353 INFO L125 PetriNetUnfolderBase]: For 268354/272749 co-relation queries the response was YES. [2025-03-04 15:26:49,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176475 conditions, 49423 events. 22270/49423 cut-off events. For 268354/272749 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 532396 event pairs, 8508 based on Foata normal form. 3525/52753 useless extension candidates. Maximal degree in co-relation 172750. Up to 17325 conditions per place. [2025-03-04 15:26:49,676 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 170 selfloop transitions, 13 changer transitions 0/222 dead transitions. [2025-03-04 15:26:49,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 222 transitions, 2307 flow [2025-03-04 15:26:49,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2025-03-04 15:26:49,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2025-03-04 15:26:49,677 INFO L175 Difference]: Start difference. First operand has 144 places, 115 transitions, 888 flow. Second operand 4 states and 315 transitions. [2025-03-04 15:26:49,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 222 transitions, 2307 flow [2025-03-04 15:26:50,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 222 transitions, 2220 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-04 15:26:50,697 INFO L231 Difference]: Finished difference. Result has 142 places, 127 transitions, 1025 flow [2025-03-04 15:26:50,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1025, PETRI_PLACES=142, PETRI_TRANSITIONS=127} [2025-03-04 15:26:50,698 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 53 predicate places. [2025-03-04 15:26:50,698 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 127 transitions, 1025 flow [2025-03-04 15:26:50,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:50,699 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:50,699 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:50,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-04 15:26:50,699 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:50,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:50,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1786196351, now seen corresponding path program 1 times [2025-03-04 15:26:50,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:50,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253767158] [2025-03-04 15:26:50,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:50,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:50,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:26:50,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:26:50,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:50,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:50,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:50,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253767158] [2025-03-04 15:26:50,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253767158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:50,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:50,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:50,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912380916] [2025-03-04 15:26:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:50,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:50,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:50,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:50,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-04 15:26:50,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 127 transitions, 1025 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:50,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:50,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-04 15:26:50,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:55,421 INFO L124 PetriNetUnfolderBase]: 25604/53543 cut-off events. [2025-03-04 15:26:55,421 INFO L125 PetriNetUnfolderBase]: For 292801/297762 co-relation queries the response was YES. [2025-03-04 15:26:55,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187893 conditions, 53543 events. 25604/53543 cut-off events. For 292801/297762 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 562194 event pairs, 9988 based on Foata normal form. 4502/57583 useless extension candidates. Maximal degree in co-relation 184109. Up to 20904 conditions per place. [2025-03-04 15:26:55,888 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 149 selfloop transitions, 18 changer transitions 0/202 dead transitions. [2025-03-04 15:26:55,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 202 transitions, 2086 flow [2025-03-04 15:26:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2025-03-04 15:26:55,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2025-03-04 15:26:55,889 INFO L175 Difference]: Start difference. First operand has 142 places, 127 transitions, 1025 flow. Second operand 4 states and 289 transitions. [2025-03-04 15:26:55,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 202 transitions, 2086 flow [2025-03-04 15:26:57,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 202 transitions, 2070 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:26:57,362 INFO L231 Difference]: Finished difference. Result has 143 places, 125 transitions, 1020 flow [2025-03-04 15:26:57,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1020, PETRI_PLACES=143, PETRI_TRANSITIONS=125} [2025-03-04 15:26:57,363 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 54 predicate places. [2025-03-04 15:26:57,363 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 125 transitions, 1020 flow [2025-03-04 15:26:57,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:57,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:57,363 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:57,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-04 15:26:57,363 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:26:57,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 539480241, now seen corresponding path program 1 times [2025-03-04 15:26:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:57,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918845302] [2025-03-04 15:26:57,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:57,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:26:57,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:26:57,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:57,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:57,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:57,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918845302] [2025-03-04 15:26:57,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918845302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:57,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:57,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:26:57,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604451004] [2025-03-04 15:26:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:57,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:57,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:57,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:57,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:57,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-04 15:26:57,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 125 transitions, 1020 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:57,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:57,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-04 15:26:57,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:02,315 INFO L124 PetriNetUnfolderBase]: 28688/54756 cut-off events. [2025-03-04 15:27:02,315 INFO L125 PetriNetUnfolderBase]: For 306720/311720 co-relation queries the response was YES. [2025-03-04 15:27:02,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202638 conditions, 54756 events. 28688/54756 cut-off events. For 306720/311720 co-relation queries the response was YES. Maximal size of possible extension queue 1435. Compared 535682 event pairs, 10748 based on Foata normal form. 5532/59844 useless extension candidates. Maximal degree in co-relation 198871. Up to 22620 conditions per place. [2025-03-04 15:27:02,724 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 265 selfloop transitions, 16 changer transitions 0/314 dead transitions. [2025-03-04 15:27:02,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 314 transitions, 3480 flow [2025-03-04 15:27:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:27:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:27:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2025-03-04 15:27:02,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2025-03-04 15:27:02,725 INFO L175 Difference]: Start difference. First operand has 143 places, 125 transitions, 1020 flow. Second operand 6 states and 424 transitions. [2025-03-04 15:27:02,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 314 transitions, 3480 flow [2025-03-04 15:27:04,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 314 transitions, 3335 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-04 15:27:04,460 INFO L231 Difference]: Finished difference. Result has 144 places, 126 transitions, 1011 flow [2025-03-04 15:27:04,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1011, PETRI_PLACES=144, PETRI_TRANSITIONS=126} [2025-03-04 15:27:04,461 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 55 predicate places. [2025-03-04 15:27:04,461 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 126 transitions, 1011 flow [2025-03-04 15:27:04,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:04,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:04,461 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:04,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-04 15:27:04,461 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:27:04,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:04,462 INFO L85 PathProgramCache]: Analyzing trace with hash -534468667, now seen corresponding path program 1 times [2025-03-04 15:27:04,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:04,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097622560] [2025-03-04 15:27:04,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:04,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:04,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 15:27:04,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 15:27:04,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:04,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097622560] [2025-03-04 15:27:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097622560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:27:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668214146] [2025-03-04 15:27:04,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:04,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:04,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:04,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:04,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:04,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-04 15:27:04,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 126 transitions, 1011 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:04,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:04,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-04 15:27:04,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:09,185 INFO L124 PetriNetUnfolderBase]: 29012/55871 cut-off events. [2025-03-04 15:27:09,186 INFO L125 PetriNetUnfolderBase]: For 354507/360092 co-relation queries the response was YES. [2025-03-04 15:27:09,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206702 conditions, 55871 events. 29012/55871 cut-off events. For 354507/360092 co-relation queries the response was YES. Maximal size of possible extension queue 1489. Compared 552979 event pairs, 10728 based on Foata normal form. 5174/60313 useless extension candidates. Maximal degree in co-relation 202719. Up to 22756 conditions per place. [2025-03-04 15:27:09,654 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 159 selfloop transitions, 12 changer transitions 0/206 dead transitions. [2025-03-04 15:27:09,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 206 transitions, 2158 flow [2025-03-04 15:27:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:09,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2025-03-04 15:27:09,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2025-03-04 15:27:09,656 INFO L175 Difference]: Start difference. First operand has 144 places, 126 transitions, 1011 flow. Second operand 4 states and 287 transitions. [2025-03-04 15:27:09,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 206 transitions, 2158 flow [2025-03-04 15:27:11,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 206 transitions, 2015 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-03-04 15:27:11,385 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 1012 flow [2025-03-04 15:27:11,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1012, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2025-03-04 15:27:11,386 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 50 predicate places. [2025-03-04 15:27:11,386 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 1012 flow [2025-03-04 15:27:11,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:11,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:11,386 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:11,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-04 15:27:11,386 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:27:11,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1502829102, now seen corresponding path program 1 times [2025-03-04 15:27:11,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:11,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103941061] [2025-03-04 15:27:11,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:11,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:11,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 15:27:11,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 15:27:11,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:11,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103941061] [2025-03-04 15:27:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103941061] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574183062] [2025-03-04 15:27:11,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:11,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:11,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:11,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:27:11,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 15:27:11,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 15:27:11,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:11,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:11,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:11,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:11,564 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:27:11,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574183062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:11,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:27:11,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:27:11,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685290719] [2025-03-04 15:27:11,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:11,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:27:11,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:11,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:27:11,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:27:11,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-04 15:27:11,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 1012 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:11,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:11,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-04 15:27:11,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:15,778 INFO L124 PetriNetUnfolderBase]: 22514/48336 cut-off events. [2025-03-04 15:27:15,778 INFO L125 PetriNetUnfolderBase]: For 243700/247581 co-relation queries the response was YES. [2025-03-04 15:27:16,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176678 conditions, 48336 events. 22514/48336 cut-off events. For 243700/247581 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 507778 event pairs, 5036 based on Foata normal form. 3769/51460 useless extension candidates. Maximal degree in co-relation 175153. Up to 14682 conditions per place. [2025-03-04 15:27:16,343 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 295 selfloop transitions, 19 changer transitions 0/349 dead transitions. [2025-03-04 15:27:16,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 349 transitions, 3816 flow [2025-03-04 15:27:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:27:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:27:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 465 transitions. [2025-03-04 15:27:16,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8072916666666666 [2025-03-04 15:27:16,344 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 1012 flow. Second operand 6 states and 465 transitions. [2025-03-04 15:27:16,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 349 transitions, 3816 flow [2025-03-04 15:27:17,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 349 transitions, 3761 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:17,540 INFO L231 Difference]: Finished difference. Result has 142 places, 127 transitions, 1035 flow [2025-03-04 15:27:17,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1035, PETRI_PLACES=142, PETRI_TRANSITIONS=127} [2025-03-04 15:27:17,540 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 53 predicate places. [2025-03-04 15:27:17,540 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 127 transitions, 1035 flow [2025-03-04 15:27:17,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:17,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:17,541 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:27:17,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:27:17,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-04 15:27:17,744 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-04 15:27:17,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:17,744 INFO L85 PathProgramCache]: Analyzing trace with hash -656937453, now seen corresponding path program 1 times [2025-03-04 15:27:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:17,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336477705] [2025-03-04 15:27:17,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:17,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:17,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-04 15:27:17,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-04 15:27:17,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:17,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:17,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:17,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336477705] [2025-03-04 15:27:17,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336477705] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:17,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646033005] [2025-03-04 15:27:17,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:17,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:17,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:17,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:17,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:27:17,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-04 15:27:17,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-04 15:27:17,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:17,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:17,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:17,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:17,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:17,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646033005] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:17,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:17,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:27:17,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30189171] [2025-03-04 15:27:17,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:17,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:27:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:17,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:27:17,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:27:17,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-04 15:27:17,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 127 transitions, 1035 flow. Second operand has 12 states, 12 states have (on average 61.75) internal successors, (741), 12 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:17,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:17,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-04 15:27:17,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand