./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 8fc3dc66 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-?-8fc3dc6-m [2025-03-17 19:42:30,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:42:30,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:42:30,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:42:30,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:42:30,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:42:30,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:42:30,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:42:30,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:42:30,723 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:42:30,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:42:30,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:42:30,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:42:30,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:42:30,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:42:30,725 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:42:30,726 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:30,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:42:30,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:42:30,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:42:30,727 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 [2025-03-17 19:42:30,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:42:30,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:42:30,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:42:30,948 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:42:30,948 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:42:30,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2025-03-17 19:42:32,135 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff094b8d4/775ed6727ddf41c1ab1cd99825f1f7e1/FLAG0f479d21e [2025-03-17 19:42:32,318 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:42:32,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2025-03-17 19:42:32,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff094b8d4/775ed6727ddf41c1ab1cd99825f1f7e1/FLAG0f479d21e [2025-03-17 19:42:32,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff094b8d4/775ed6727ddf41c1ab1cd99825f1f7e1 [2025-03-17 19:42:32,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:42:32,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:42:32,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:42:32,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:42:32,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:42:32,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed0eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32, skipping insertion in model container [2025-03-17 19:42:32,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,707 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:42:32,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:42:32,837 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:42:32,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:42:32,865 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:42:32,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32 WrapperNode [2025-03-17 19:42:32,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:42:32,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:42:32,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:42:32,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:42:32,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,899 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 216 [2025-03-17 19:42:32,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:42:32,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:42:32,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:42:32,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:42:32,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,915 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,927 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]. [2025-03-17 19:42:32,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,934 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:42:32,945 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:42:32,945 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:42:32,945 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:42:32,946 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (1/1) ... [2025-03-17 19:42:32,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:32,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:32,968 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) [2025-03-17 19:42:32,970 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 [2025-03-17 19:42:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:42:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:42:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:42:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:42:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:42:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:42:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:42:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:42:32,989 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:42:33,067 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:42:33,069 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:42:33,382 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:42:33,382 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:42:33,536 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:42:33,537 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:42:33,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:33 BoogieIcfgContainer [2025-03-17 19:42:33,537 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:42:33,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:42:33,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:42:33,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:42:33,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:42:32" (1/3) ... [2025-03-17 19:42:33,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c12690f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:42:33, skipping insertion in model container [2025-03-17 19:42:33,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:32" (2/3) ... [2025-03-17 19:42:33,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c12690f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:42:33, skipping insertion in model container [2025-03-17 19:42:33,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:33" (3/3) ... [2025-03-17 19:42:33,545 INFO L128 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2025-03-17 19:42:33,557 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:42:33,558 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. [2025-03-17 19:42:33,559 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:42:33,615 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:42:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 206 flow [2025-03-17 19:42:33,675 INFO L124 PetriNetUnfolderBase]: 10/94 cut-off events. [2025-03-17 19:42:33,679 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:42:33,682 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 325 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. [2025-03-17 19:42:33,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 96 transitions, 206 flow [2025-03-17 19:42:33,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 193 flow [2025-03-17 19:42:33,691 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:42:33,717 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;@347bcc03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:42:33,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2025-03-17 19:42:33,722 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:42:33,722 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-03-17 19:42:33,722 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:42:33,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:33,723 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:42:33,723 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:33,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1707860243, now seen corresponding path program 1 times [2025-03-17 19:42:33,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:33,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560034184] [2025-03-17 19:42:33,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:33,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:42:33,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:42:33,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:33,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:33,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:33,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560034184] [2025-03-17 19:42:33,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560034184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:33,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:33,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057773489] [2025-03-17 19:42:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:33,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:33,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:33,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:33,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:33,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:33,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2025-03-17 19:42:33,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:33,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:33,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:34,393 INFO L124 PetriNetUnfolderBase]: 1057/2563 cut-off events. [2025-03-17 19:42:34,393 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-17 19:42:34,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4204 conditions, 2563 events. 1057/2563 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 19328 event pairs, 406 based on Foata normal form. 60/2075 useless extension candidates. Maximal degree in co-relation 4128. Up to 920 conditions per place. [2025-03-17 19:42:34,412 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 72 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2025-03-17 19:42:34,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 427 flow [2025-03-17 19:42:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2025-03-17 19:42:34,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2025-03-17 19:42:34,426 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 193 flow. Second operand 4 states and 296 transitions. [2025-03-17 19:42:34,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 427 flow [2025-03-17 19:42:34,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:34,437 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 222 flow [2025-03-17 19:42:34,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2025-03-17 19:42:34,442 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2025-03-17 19:42:34,443 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 222 flow [2025-03-17 19:42:34,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2025-03-17 19:42:34,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:34,444 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:34,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:42:34,444 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:34,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1404060586, now seen corresponding path program 1 times [2025-03-17 19:42:34,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:34,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632479988] [2025-03-17 19:42:34,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:34,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:42:34,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:42:34,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:34,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:34,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:34,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632479988] [2025-03-17 19:42:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632479988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:34,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:34,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196079710] [2025-03-17 19:42:34,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:34,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:34,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:34,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:34,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2025-03-17 19:42:34,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 222 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) [2025-03-17 19:42:34,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:34,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2025-03-17 19:42:34,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:34,830 INFO L124 PetriNetUnfolderBase]: 869/2216 cut-off events. [2025-03-17 19:42:34,830 INFO L125 PetriNetUnfolderBase]: For 370/378 co-relation queries the response was YES. [2025-03-17 19:42:34,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 2216 events. 869/2216 cut-off events. For 370/378 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 16352 event pairs, 298 based on Foata normal form. 8/1859 useless extension candidates. Maximal degree in co-relation 3480. Up to 656 conditions per place. [2025-03-17 19:42:34,845 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 50 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2025-03-17 19:42:34,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 364 flow [2025-03-17 19:42:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2025-03-17 19:42:34,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7317708333333334 [2025-03-17 19:42:34,847 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 222 flow. Second operand 4 states and 281 transitions. [2025-03-17 19:42:34,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 364 flow [2025-03-17 19:42:34,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 110 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:42:34,852 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 228 flow [2025-03-17 19:42:34,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2025-03-17 19:42:34,853 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2025-03-17 19:42:34,853 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 228 flow [2025-03-17 19:42:34,854 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) [2025-03-17 19:42:34,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:34,854 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:34,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:42:34,854 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:34,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:34,854 INFO L85 PathProgramCache]: Analyzing trace with hash -946404254, now seen corresponding path program 1 times [2025-03-17 19:42:34,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:34,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041485546] [2025-03-17 19:42:34,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:34,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:34,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:42:34,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:42:34,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:34,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:34,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:34,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041485546] [2025-03-17 19:42:34,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041485546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:34,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:34,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:34,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188849635] [2025-03-17 19:42:34,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:34,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:34,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:34,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:34,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:34,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:34,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2025-03-17 19:42:34,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:34,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:34,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:35,229 INFO L124 PetriNetUnfolderBase]: 1241/2953 cut-off events. [2025-03-17 19:42:35,229 INFO L125 PetriNetUnfolderBase]: For 806/869 co-relation queries the response was YES. [2025-03-17 19:42:35,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5369 conditions, 2953 events. 1241/2953 cut-off events. For 806/869 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 23009 event pairs, 468 based on Foata normal form. 99/2502 useless extension candidates. Maximal degree in co-relation 4849. Up to 1119 conditions per place. [2025-03-17 19:42:35,243 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 76 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2025-03-17 19:42:35,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 132 transitions, 518 flow [2025-03-17 19:42:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2025-03-17 19:42:35,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.765625 [2025-03-17 19:42:35,245 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 228 flow. Second operand 4 states and 294 transitions. [2025-03-17 19:42:35,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 132 transitions, 518 flow [2025-03-17 19:42:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 132 transitions, 498 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:35,248 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 254 flow [2025-03-17 19:42:35,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2025-03-17 19:42:35,248 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 6 predicate places. [2025-03-17 19:42:35,249 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 254 flow [2025-03-17 19:42:35,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2025-03-17 19:42:35,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:35,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:35,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:42:35,249 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:35,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:35,250 INFO L85 PathProgramCache]: Analyzing trace with hash 576175063, now seen corresponding path program 1 times [2025-03-17 19:42:35,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:35,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640718219] [2025-03-17 19:42:35,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:35,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:35,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:42:35,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:42:35,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:35,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:35,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640718219] [2025-03-17 19:42:35,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640718219] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:35,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:35,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:35,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216845287] [2025-03-17 19:42:35,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:35,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:35,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:35,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:35,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:35,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2025-03-17 19:42:35,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 254 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) [2025-03-17 19:42:35,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:35,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2025-03-17 19:42:35,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:35,578 INFO L124 PetriNetUnfolderBase]: 1042/2636 cut-off events. [2025-03-17 19:42:35,578 INFO L125 PetriNetUnfolderBase]: For 921/952 co-relation queries the response was YES. [2025-03-17 19:42:35,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5062 conditions, 2636 events. 1042/2636 cut-off events. For 921/952 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 20338 event pairs, 364 based on Foata normal form. 53/2349 useless extension candidates. Maximal degree in co-relation 4553. Up to 810 conditions per place. [2025-03-17 19:42:35,595 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 55 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2025-03-17 19:42:35,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 113 transitions, 426 flow [2025-03-17 19:42:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2025-03-17 19:42:35,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2025-03-17 19:42:35,597 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 254 flow. Second operand 4 states and 277 transitions. [2025-03-17 19:42:35,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 113 transitions, 426 flow [2025-03-17 19:42:35,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 113 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:42:35,603 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 258 flow [2025-03-17 19:42:35,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2025-03-17 19:42:35,604 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2025-03-17 19:42:35,604 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 258 flow [2025-03-17 19:42:35,604 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) [2025-03-17 19:42:35,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:35,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:35,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:42:35,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:35,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:35,605 INFO L85 PathProgramCache]: Analyzing trace with hash 726239846, now seen corresponding path program 1 times [2025-03-17 19:42:35,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:35,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646242410] [2025-03-17 19:42:35,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:35,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:35,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:42:35,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:42:35,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:35,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:35,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:35,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646242410] [2025-03-17 19:42:35,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646242410] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:35,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:35,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:35,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070261318] [2025-03-17 19:42:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:35,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:35,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:35,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:35,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:35,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2025-03-17 19:42:35,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 258 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) [2025-03-17 19:42:35,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:35,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2025-03-17 19:42:35,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:35,934 INFO L124 PetriNetUnfolderBase]: 1007/2666 cut-off events. [2025-03-17 19:42:35,935 INFO L125 PetriNetUnfolderBase]: For 1037/1062 co-relation queries the response was YES. [2025-03-17 19:42:35,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5065 conditions, 2666 events. 1007/2666 cut-off events. For 1037/1062 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21394 event pairs, 323 based on Foata normal form. 25/2287 useless extension candidates. Maximal degree in co-relation 4552. Up to 804 conditions per place. [2025-03-17 19:42:35,952 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 53 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2025-03-17 19:42:35,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 111 transitions, 431 flow [2025-03-17 19:42:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2025-03-17 19:42:35,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-17 19:42:35,954 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 258 flow. Second operand 4 states and 280 transitions. [2025-03-17 19:42:35,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 111 transitions, 431 flow [2025-03-17 19:42:35,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 417 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:35,959 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 256 flow [2025-03-17 19:42:35,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2025-03-17 19:42:35,960 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2025-03-17 19:42:35,960 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 256 flow [2025-03-17 19:42:35,961 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) [2025-03-17 19:42:35,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:35,961 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:35,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:42:35,961 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:35,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash 681557388, now seen corresponding path program 1 times [2025-03-17 19:42:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:35,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834403787] [2025-03-17 19:42:35,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:35,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:35,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:42:35,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:42:35,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:35,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:36,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:36,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834403787] [2025-03-17 19:42:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834403787] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:36,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:36,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110155884] [2025-03-17 19:42:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:36,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:36,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:36,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:36,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:36,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2025-03-17 19:42:36,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 256 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) [2025-03-17 19:42:36,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:36,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2025-03-17 19:42:36,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:36,396 INFO L124 PetriNetUnfolderBase]: 1326/2882 cut-off events. [2025-03-17 19:42:36,397 INFO L125 PetriNetUnfolderBase]: For 1108/1149 co-relation queries the response was YES. [2025-03-17 19:42:36,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5959 conditions, 2882 events. 1326/2882 cut-off events. For 1108/1149 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20672 event pairs, 382 based on Foata normal form. 23/2613 useless extension candidates. Maximal degree in co-relation 5410. Up to 877 conditions per place. [2025-03-17 19:42:36,413 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 74 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2025-03-17 19:42:36,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 542 flow [2025-03-17 19:42:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 349 transitions. [2025-03-17 19:42:36,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7270833333333333 [2025-03-17 19:42:36,415 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 256 flow. Second operand 5 states and 349 transitions. [2025-03-17 19:42:36,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 542 flow [2025-03-17 19:42:36,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:36,424 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 258 flow [2025-03-17 19:42:36,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2025-03-17 19:42:36,425 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2025-03-17 19:42:36,425 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 258 flow [2025-03-17 19:42:36,425 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) [2025-03-17 19:42:36,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:36,425 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:36,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:42:36,425 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:36,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:36,426 INFO L85 PathProgramCache]: Analyzing trace with hash 681558381, now seen corresponding path program 1 times [2025-03-17 19:42:36,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:36,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349874180] [2025-03-17 19:42:36,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:36,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:36,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:42:36,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:42:36,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:36,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:36,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349874180] [2025-03-17 19:42:36,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349874180] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:36,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:36,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:36,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980943574] [2025-03-17 19:42:36,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:36,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:36,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:36,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:36,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:36,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:36,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 258 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) [2025-03-17 19:42:36,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:36,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:36,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:36,702 INFO L124 PetriNetUnfolderBase]: 1108/2752 cut-off events. [2025-03-17 19:42:36,702 INFO L125 PetriNetUnfolderBase]: For 1213/1236 co-relation queries the response was YES. [2025-03-17 19:42:36,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5454 conditions, 2752 events. 1108/2752 cut-off events. For 1213/1236 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21355 event pairs, 511 based on Foata normal form. 49/2453 useless extension candidates. Maximal degree in co-relation 4931. Up to 1164 conditions per place. [2025-03-17 19:42:36,715 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 76 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2025-03-17 19:42:36,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 530 flow [2025-03-17 19:42:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2025-03-17 19:42:36,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2025-03-17 19:42:36,717 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 258 flow. Second operand 4 states and 291 transitions. [2025-03-17 19:42:36,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 530 flow [2025-03-17 19:42:36,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 130 transitions, 518 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:36,721 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 248 flow [2025-03-17 19:42:36,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2025-03-17 19:42:36,722 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 6 predicate places. [2025-03-17 19:42:36,722 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 248 flow [2025-03-17 19:42:36,722 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) [2025-03-17 19:42:36,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:36,723 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:36,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:42:36,723 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:36,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:36,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1038568646, now seen corresponding path program 1 times [2025-03-17 19:42:36,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:36,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644251458] [2025-03-17 19:42:36,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:36,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:36,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:42:36,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:42:36,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:36,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:36,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:36,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644251458] [2025-03-17 19:42:36,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644251458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:36,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:36,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:36,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268577513] [2025-03-17 19:42:36,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:36,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:36,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:36,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:36,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:36,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2025-03-17 19:42:36,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2025-03-17 19:42:36,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:36,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2025-03-17 19:42:36,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:36,982 INFO L124 PetriNetUnfolderBase]: 1004/2611 cut-off events. [2025-03-17 19:42:36,982 INFO L125 PetriNetUnfolderBase]: For 1055/1080 co-relation queries the response was YES. [2025-03-17 19:42:36,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4967 conditions, 2611 events. 1004/2611 cut-off events. For 1055/1080 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 20638 event pairs, 323 based on Foata normal form. 58/2284 useless extension candidates. Maximal degree in co-relation 4468. Up to 804 conditions per place. [2025-03-17 19:42:36,993 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 54 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2025-03-17 19:42:36,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 108 transitions, 420 flow [2025-03-17 19:42:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2025-03-17 19:42:36,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2025-03-17 19:42:36,997 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 248 flow. Second operand 4 states and 276 transitions. [2025-03-17 19:42:36,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 108 transitions, 420 flow [2025-03-17 19:42:37,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:42:37,001 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 246 flow [2025-03-17 19:42:37,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2025-03-17 19:42:37,004 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 6 predicate places. [2025-03-17 19:42:37,004 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 246 flow [2025-03-17 19:42:37,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2025-03-17 19:42:37,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:37,004 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:37,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:42:37,004 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:37,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash -346556838, now seen corresponding path program 1 times [2025-03-17 19:42:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:37,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666647062] [2025-03-17 19:42:37,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:37,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:42:37,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:42:37,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:37,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666647062] [2025-03-17 19:42:37,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666647062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:37,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:37,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:42:37,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322039021] [2025-03-17 19:42:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:37,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:42:37,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:37,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:42:37,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:42:37,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-17 19:42:37,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 246 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) [2025-03-17 19:42:37,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:37,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-17 19:42:37,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:37,382 INFO L124 PetriNetUnfolderBase]: 1289/2811 cut-off events. [2025-03-17 19:42:37,382 INFO L125 PetriNetUnfolderBase]: For 1302/1331 co-relation queries the response was YES. [2025-03-17 19:42:37,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5780 conditions, 2811 events. 1289/2811 cut-off events. For 1302/1331 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 20228 event pairs, 334 based on Foata normal form. 97/2612 useless extension candidates. Maximal degree in co-relation 5244. Up to 810 conditions per place. [2025-03-17 19:42:37,393 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 90 selfloop transitions, 9 changer transitions 0/147 dead transitions. [2025-03-17 19:42:37,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 147 transitions, 636 flow [2025-03-17 19:42:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2025-03-17 19:42:37,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2025-03-17 19:42:37,395 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 246 flow. Second operand 6 states and 402 transitions. [2025-03-17 19:42:37,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 147 transitions, 636 flow [2025-03-17 19:42:37,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 147 transitions, 610 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:37,399 INFO L231 Difference]: Finished difference. Result has 97 places, 90 transitions, 263 flow [2025-03-17 19:42:37,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=263, PETRI_PLACES=97, PETRI_TRANSITIONS=90} [2025-03-17 19:42:37,402 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2025-03-17 19:42:37,402 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 90 transitions, 263 flow [2025-03-17 19:42:37,402 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) [2025-03-17 19:42:37,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:37,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:37,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:42:37,403 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:37,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:37,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2130856616, now seen corresponding path program 1 times [2025-03-17 19:42:37,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:37,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162665499] [2025-03-17 19:42:37,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:37,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:37,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:37,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:37,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:37,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:37,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162665499] [2025-03-17 19:42:37,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162665499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:37,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:37,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120032283] [2025-03-17 19:42:37,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:37,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:37,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:37,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:37,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 96 [2025-03-17 19:42:37,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 90 transitions, 263 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) [2025-03-17 19:42:37,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:37,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 96 [2025-03-17 19:42:37,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:37,731 INFO L124 PetriNetUnfolderBase]: 1293/2818 cut-off events. [2025-03-17 19:42:37,731 INFO L125 PetriNetUnfolderBase]: For 1926/2042 co-relation queries the response was YES. [2025-03-17 19:42:37,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 2818 events. 1293/2818 cut-off events. For 1926/2042 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20328 event pairs, 327 based on Foata normal form. 96/2614 useless extension candidates. Maximal degree in co-relation 5465. Up to 843 conditions per place. [2025-03-17 19:42:37,741 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 75 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2025-03-17 19:42:37,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 127 transitions, 571 flow [2025-03-17 19:42:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2025-03-17 19:42:37,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2025-03-17 19:42:37,743 INFO L175 Difference]: Start difference. First operand has 97 places, 90 transitions, 263 flow. Second operand 5 states and 347 transitions. [2025-03-17 19:42:37,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 127 transitions, 571 flow [2025-03-17 19:42:37,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 127 transitions, 540 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:37,746 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 260 flow [2025-03-17 19:42:37,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2025-03-17 19:42:37,748 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2025-03-17 19:42:37,748 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 260 flow [2025-03-17 19:42:37,748 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) [2025-03-17 19:42:37,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:37,748 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:37,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:42:37,748 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:37,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2130857609, now seen corresponding path program 1 times [2025-03-17 19:42:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:37,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012812269] [2025-03-17 19:42:37,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:37,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:37,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:37,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:37,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:37,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:37,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:37,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012812269] [2025-03-17 19:42:37,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012812269] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:37,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:37,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:37,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446040064] [2025-03-17 19:42:37,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:37,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:37,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:37,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:37,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:37,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 260 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) [2025-03-17 19:42:37,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:37,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:37,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:37,975 INFO L124 PetriNetUnfolderBase]: 1089/2624 cut-off events. [2025-03-17 19:42:37,975 INFO L125 PetriNetUnfolderBase]: For 1607/1693 co-relation queries the response was YES. [2025-03-17 19:42:37,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 2624 events. 1089/2624 cut-off events. For 1607/1693 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19945 event pairs, 515 based on Foata normal form. 109/2433 useless extension candidates. Maximal degree in co-relation 4863. Up to 1172 conditions per place. [2025-03-17 19:42:37,986 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 77 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2025-03-17 19:42:37,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 127 transitions, 548 flow [2025-03-17 19:42:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2025-03-17 19:42:37,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2025-03-17 19:42:37,988 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 260 flow. Second operand 4 states and 289 transitions. [2025-03-17 19:42:37,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 127 transitions, 548 flow [2025-03-17 19:42:37,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 127 transitions, 536 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:37,991 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 250 flow [2025-03-17 19:42:37,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2025-03-17 19:42:37,992 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 6 predicate places. [2025-03-17 19:42:37,992 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 250 flow [2025-03-17 19:42:37,992 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) [2025-03-17 19:42:37,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:37,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:37,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:42:37,992 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:37,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:37,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1234637837, now seen corresponding path program 1 times [2025-03-17 19:42:37,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:37,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571360977] [2025-03-17 19:42:37,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:37,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:37,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:37,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:37,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:37,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:38,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:38,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571360977] [2025-03-17 19:42:38,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571360977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:38,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:38,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:42:38,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349692059] [2025-03-17 19:42:38,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:38,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:38,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:38,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:38,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-17 19:42:38,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 250 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) [2025-03-17 19:42:38,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:38,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-17 19:42:38,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:38,312 INFO L124 PetriNetUnfolderBase]: 1244/2733 cut-off events. [2025-03-17 19:42:38,313 INFO L125 PetriNetUnfolderBase]: For 1195/1224 co-relation queries the response was YES. [2025-03-17 19:42:38,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 2733 events. 1244/2733 cut-off events. For 1195/1224 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19589 event pairs, 485 based on Foata normal form. 63/2517 useless extension candidates. Maximal degree in co-relation 5220. Up to 1180 conditions per place. [2025-03-17 19:42:38,323 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 113 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2025-03-17 19:42:38,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 165 transitions, 746 flow [2025-03-17 19:42:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:38,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2025-03-17 19:42:38,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2025-03-17 19:42:38,324 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 250 flow. Second operand 6 states and 424 transitions. [2025-03-17 19:42:38,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 165 transitions, 746 flow [2025-03-17 19:42:38,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 715 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:38,332 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 268 flow [2025-03-17 19:42:38,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2025-03-17 19:42:38,333 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2025-03-17 19:42:38,333 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 268 flow [2025-03-17 19:42:38,333 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) [2025-03-17 19:42:38,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:38,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:38,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:42:38,334 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:38,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1632046313, now seen corresponding path program 1 times [2025-03-17 19:42:38,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:38,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879521743] [2025-03-17 19:42:38,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:38,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:38,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:42:38,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:42:38,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:38,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:38,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:38,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879521743] [2025-03-17 19:42:38,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879521743] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:38,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:38,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:42:38,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416051863] [2025-03-17 19:42:38,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:38,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:42:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:38,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:42:38,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:42:38,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-17 19:42:38,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 268 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) [2025-03-17 19:42:38,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:38,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-17 19:42:38,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:38,704 INFO L124 PetriNetUnfolderBase]: 1260/2704 cut-off events. [2025-03-17 19:42:38,704 INFO L125 PetriNetUnfolderBase]: For 2507/2603 co-relation queries the response was YES. [2025-03-17 19:42:38,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5898 conditions, 2704 events. 1260/2704 cut-off events. For 2507/2603 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19159 event pairs, 327 based on Foata normal form. 162/2566 useless extension candidates. Maximal degree in co-relation 5344. Up to 811 conditions per place. [2025-03-17 19:42:38,715 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 95 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2025-03-17 19:42:38,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 722 flow [2025-03-17 19:42:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2025-03-17 19:42:38,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2025-03-17 19:42:38,717 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 268 flow. Second operand 6 states and 399 transitions. [2025-03-17 19:42:38,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 722 flow [2025-03-17 19:42:38,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 149 transitions, 670 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:38,722 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 277 flow [2025-03-17 19:42:38,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2025-03-17 19:42:38,723 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2025-03-17 19:42:38,723 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 277 flow [2025-03-17 19:42:38,723 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) [2025-03-17 19:42:38,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:38,723 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:38,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:42:38,723 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:38,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1966349470, now seen corresponding path program 1 times [2025-03-17 19:42:38,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:38,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31137864] [2025-03-17 19:42:38,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:38,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:38,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:42:38,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:42:38,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:38,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31137864] [2025-03-17 19:42:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31137864] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:38,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182629877] [2025-03-17 19:42:38,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:38,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:38,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:38,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:38,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:38,774 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2025-03-17 19:42:38,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2025-03-17 19:42:38,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:38,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2025-03-17 19:42:38,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:38,949 INFO L124 PetriNetUnfolderBase]: 1033/2447 cut-off events. [2025-03-17 19:42:38,949 INFO L125 PetriNetUnfolderBase]: For 2065/2168 co-relation queries the response was YES. [2025-03-17 19:42:38,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5298 conditions, 2447 events. 1033/2447 cut-off events. For 2065/2168 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 17924 event pairs, 470 based on Foata normal form. 163/2293 useless extension candidates. Maximal degree in co-relation 4757. Up to 988 conditions per place. [2025-03-17 19:42:38,958 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 59 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2025-03-17 19:42:38,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 476 flow [2025-03-17 19:42:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2025-03-17 19:42:38,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2025-03-17 19:42:38,959 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 277 flow. Second operand 4 states and 279 transitions. [2025-03-17 19:42:38,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 476 flow [2025-03-17 19:42:38,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 454 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:38,963 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 268 flow [2025-03-17 19:42:38,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2025-03-17 19:42:38,963 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2025-03-17 19:42:38,963 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 268 flow [2025-03-17 19:42:38,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2025-03-17 19:42:38,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:38,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:38,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:42:38,964 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:38,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash -27482257, now seen corresponding path program 1 times [2025-03-17 19:42:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759027231] [2025-03-17 19:42:38,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:38,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:38,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:42:38,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:42:38,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:38,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:38,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:38,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759027231] [2025-03-17 19:42:38,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759027231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:38,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:38,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:38,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110527531] [2025-03-17 19:42:38,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:38,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:38,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:38,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:38,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:39,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:39,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 268 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) [2025-03-17 19:42:39,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:39,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:39,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:39,222 INFO L124 PetriNetUnfolderBase]: 1260/2723 cut-off events. [2025-03-17 19:42:39,223 INFO L125 PetriNetUnfolderBase]: For 2239/2336 co-relation queries the response was YES. [2025-03-17 19:42:39,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6020 conditions, 2723 events. 1260/2723 cut-off events. For 2239/2336 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19428 event pairs, 515 based on Foata normal form. 130/2615 useless extension candidates. Maximal degree in co-relation 5463. Up to 1205 conditions per place. [2025-03-17 19:42:39,231 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 79 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2025-03-17 19:42:39,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 127 transitions, 587 flow [2025-03-17 19:42:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2025-03-17 19:42:39,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2025-03-17 19:42:39,233 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 268 flow. Second operand 4 states and 287 transitions. [2025-03-17 19:42:39,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 127 transitions, 587 flow [2025-03-17 19:42:39,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 564 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:39,237 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 270 flow [2025-03-17 19:42:39,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2025-03-17 19:42:39,238 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 6 predicate places. [2025-03-17 19:42:39,238 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 270 flow [2025-03-17 19:42:39,238 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) [2025-03-17 19:42:39,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:39,238 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:39,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:42:39,239 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:39,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 827292049, now seen corresponding path program 1 times [2025-03-17 19:42:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064138699] [2025-03-17 19:42:39,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:39,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:39,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:42:39,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:42:39,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:39,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064138699] [2025-03-17 19:42:39,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064138699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:39,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:39,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037470415] [2025-03-17 19:42:39,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:39,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:39,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:39,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:39,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2025-03-17 19:42:39,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 270 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) [2025-03-17 19:42:39,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:39,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2025-03-17 19:42:39,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:39,443 INFO L124 PetriNetUnfolderBase]: 968/2393 cut-off events. [2025-03-17 19:42:39,443 INFO L125 PetriNetUnfolderBase]: For 1872/1961 co-relation queries the response was YES. [2025-03-17 19:42:39,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 2393 events. 968/2393 cut-off events. For 1872/1961 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17875 event pairs, 494 based on Foata normal form. 89/2227 useless extension candidates. Maximal degree in co-relation 4579. Up to 1047 conditions per place. [2025-03-17 19:42:39,453 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 59 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2025-03-17 19:42:39,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 475 flow [2025-03-17 19:42:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2025-03-17 19:42:39,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-17 19:42:39,455 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 270 flow. Second operand 4 states and 280 transitions. [2025-03-17 19:42:39,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 475 flow [2025-03-17 19:42:39,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 467 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:39,459 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 272 flow [2025-03-17 19:42:39,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2025-03-17 19:42:39,460 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2025-03-17 19:42:39,461 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 272 flow [2025-03-17 19:42:39,461 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) [2025-03-17 19:42:39,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:39,461 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:39,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:42:39,461 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:39,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash 733466829, now seen corresponding path program 1 times [2025-03-17 19:42:39,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:39,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634049886] [2025-03-17 19:42:39,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:39,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:39,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:42:39,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:42:39,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:39,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:39,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:39,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634049886] [2025-03-17 19:42:39,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634049886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:39,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:39,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:39,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295962738] [2025-03-17 19:42:39,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:39,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:39,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:39,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:39,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:39,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:39,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 272 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) [2025-03-17 19:42:39,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:39,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:39,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:39,770 INFO L124 PetriNetUnfolderBase]: 1515/3262 cut-off events. [2025-03-17 19:42:39,771 INFO L125 PetriNetUnfolderBase]: For 2530/2647 co-relation queries the response was YES. [2025-03-17 19:42:39,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7223 conditions, 3262 events. 1515/3262 cut-off events. For 2530/2647 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 24108 event pairs, 699 based on Foata normal form. 183/3123 useless extension candidates. Maximal degree in co-relation 6605. Up to 1488 conditions per place. [2025-03-17 19:42:39,784 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 84 selfloop transitions, 7 changer transitions 0/129 dead transitions. [2025-03-17 19:42:39,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 612 flow [2025-03-17 19:42:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2025-03-17 19:42:39,785 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.765625 [2025-03-17 19:42:39,785 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 272 flow. Second operand 4 states and 294 transitions. [2025-03-17 19:42:39,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 129 transitions, 612 flow [2025-03-17 19:42:39,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 129 transitions, 592 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:39,792 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 306 flow [2025-03-17 19:42:39,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2025-03-17 19:42:39,793 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2025-03-17 19:42:39,793 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 306 flow [2025-03-17 19:42:39,793 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) [2025-03-17 19:42:39,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:39,793 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:39,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 19:42:39,794 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:39,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1262635885, now seen corresponding path program 1 times [2025-03-17 19:42:39,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:39,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109005291] [2025-03-17 19:42:39,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:39,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:39,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:42:39,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:42:39,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:39,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:39,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:39,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109005291] [2025-03-17 19:42:39,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109005291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:39,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:39,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:42:39,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989740365] [2025-03-17 19:42:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:39,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:42:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:39,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:42:39,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:42:39,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2025-03-17 19:42:39,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 306 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) [2025-03-17 19:42:39,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:39,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2025-03-17 19:42:39,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:40,327 INFO L124 PetriNetUnfolderBase]: 2202/4847 cut-off events. [2025-03-17 19:42:40,328 INFO L125 PetriNetUnfolderBase]: For 4508/4686 co-relation queries the response was YES. [2025-03-17 19:42:40,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 4847 events. 2202/4847 cut-off events. For 4508/4686 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 39165 event pairs, 554 based on Foata normal form. 244/4677 useless extension candidates. Maximal degree in co-relation 10160. Up to 1306 conditions per place. [2025-03-17 19:42:40,352 INFO L140 encePairwiseOnDemand]: 86/96 looper letters, 147 selfloop transitions, 13 changer transitions 0/198 dead transitions. [2025-03-17 19:42:40,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 198 transitions, 1014 flow [2025-03-17 19:42:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:42:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:42:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 481 transitions. [2025-03-17 19:42:40,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7157738095238095 [2025-03-17 19:42:40,354 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 306 flow. Second operand 7 states and 481 transitions. [2025-03-17 19:42:40,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 198 transitions, 1014 flow [2025-03-17 19:42:40,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 198 transitions, 1014 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:42:40,366 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 379 flow [2025-03-17 19:42:40,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2025-03-17 19:42:40,367 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 17 predicate places. [2025-03-17 19:42:40,367 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 379 flow [2025-03-17 19:42:40,367 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) [2025-03-17 19:42:40,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:40,367 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:40,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:42:40,368 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:40,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 457775091, now seen corresponding path program 1 times [2025-03-17 19:42:40,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:40,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119064038] [2025-03-17 19:42:40,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:40,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:40,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:42:40,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:42:40,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:40,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:40,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:40,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119064038] [2025-03-17 19:42:40,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119064038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:40,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:40,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:42:40,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817758281] [2025-03-17 19:42:40,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:40,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:42:40,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:40,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:42:40,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:42:40,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2025-03-17 19:42:40,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 379 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) [2025-03-17 19:42:40,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:40,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2025-03-17 19:42:40,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:40,977 INFO L124 PetriNetUnfolderBase]: 2439/4764 cut-off events. [2025-03-17 19:42:40,977 INFO L125 PetriNetUnfolderBase]: For 7556/7929 co-relation queries the response was YES. [2025-03-17 19:42:40,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12571 conditions, 4764 events. 2439/4764 cut-off events. For 7556/7929 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 34847 event pairs, 288 based on Foata normal form. 213/4695 useless extension candidates. Maximal degree in co-relation 11688. Up to 1264 conditions per place. [2025-03-17 19:42:41,001 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 155 selfloop transitions, 9 changer transitions 0/201 dead transitions. [2025-03-17 19:42:41,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 201 transitions, 1359 flow [2025-03-17 19:42:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:42:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:42:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 462 transitions. [2025-03-17 19:42:41,003 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-03-17 19:42:41,003 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 379 flow. Second operand 7 states and 462 transitions. [2025-03-17 19:42:41,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 201 transitions, 1359 flow [2025-03-17 19:42:41,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 201 transitions, 1317 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-03-17 19:42:41,017 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 393 flow [2025-03-17 19:42:41,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2025-03-17 19:42:41,018 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 21 predicate places. [2025-03-17 19:42:41,018 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 393 flow [2025-03-17 19:42:41,018 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) [2025-03-17 19:42:41,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:41,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:41,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:42:41,018 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:41,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:41,019 INFO L85 PathProgramCache]: Analyzing trace with hash 457776084, now seen corresponding path program 1 times [2025-03-17 19:42:41,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:41,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087553160] [2025-03-17 19:42:41,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:41,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:41,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:42:41,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:42:41,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:41,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:41,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:41,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087553160] [2025-03-17 19:42:41,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087553160] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:41,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:41,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:41,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4296161] [2025-03-17 19:42:41,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:41,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:41,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:41,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:41,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:41,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 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) [2025-03-17 19:42:41,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:41,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:41,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:41,411 INFO L124 PetriNetUnfolderBase]: 2204/5270 cut-off events. [2025-03-17 19:42:41,411 INFO L125 PetriNetUnfolderBase]: For 8393/8686 co-relation queries the response was YES. [2025-03-17 19:42:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12680 conditions, 5270 events. 2204/5270 cut-off events. For 8393/8686 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 44703 event pairs, 1155 based on Foata normal form. 227/4997 useless extension candidates. Maximal degree in co-relation 11787. Up to 2387 conditions per place. [2025-03-17 19:42:41,435 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 103 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2025-03-17 19:42:41,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 150 transitions, 929 flow [2025-03-17 19:42:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2025-03-17 19:42:41,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2025-03-17 19:42:41,436 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 393 flow. Second operand 4 states and 292 transitions. [2025-03-17 19:42:41,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 150 transitions, 929 flow [2025-03-17 19:42:41,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 913 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:42:41,448 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 409 flow [2025-03-17 19:42:41,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=379, 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=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2025-03-17 19:42:41,448 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 21 predicate places. [2025-03-17 19:42:41,448 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 409 flow [2025-03-17 19:42:41,449 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) [2025-03-17 19:42:41,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:41,449 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:41,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:42:41,449 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:41,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash 486976689, now seen corresponding path program 1 times [2025-03-17 19:42:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411322986] [2025-03-17 19:42:41,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:41,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:42:41,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:42:41,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:41,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:41,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:41,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411322986] [2025-03-17 19:42:41,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411322986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:41,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:41,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:42:41,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669009417] [2025-03-17 19:42:41,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:41,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:41,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:41,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:41,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:41,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:41,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 409 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) [2025-03-17 19:42:41,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:41,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:41,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:41,919 INFO L124 PetriNetUnfolderBase]: 2789/6608 cut-off events. [2025-03-17 19:42:41,920 INFO L125 PetriNetUnfolderBase]: For 10271/10596 co-relation queries the response was YES. [2025-03-17 19:42:41,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16225 conditions, 6608 events. 2789/6608 cut-off events. For 10271/10596 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 59091 event pairs, 740 based on Foata normal form. 357/6383 useless extension candidates. Maximal degree in co-relation 15184. Up to 1777 conditions per place. [2025-03-17 19:42:41,952 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 124 selfloop transitions, 10 changer transitions 0/171 dead transitions. [2025-03-17 19:42:41,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 171 transitions, 1028 flow [2025-03-17 19:42:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2025-03-17 19:42:41,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7625 [2025-03-17 19:42:41,954 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 409 flow. Second operand 5 states and 366 transitions. [2025-03-17 19:42:41,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 171 transitions, 1028 flow [2025-03-17 19:42:41,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 171 transitions, 1015 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:41,973 INFO L231 Difference]: Finished difference. Result has 114 places, 96 transitions, 449 flow [2025-03-17 19:42:41,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=114, PETRI_TRANSITIONS=96} [2025-03-17 19:42:41,973 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 25 predicate places. [2025-03-17 19:42:41,973 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 96 transitions, 449 flow [2025-03-17 19:42:41,974 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) [2025-03-17 19:42:41,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:41,974 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:41,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 19:42:41,974 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:41,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1306126565, now seen corresponding path program 1 times [2025-03-17 19:42:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:41,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84631869] [2025-03-17 19:42:41,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:41,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:41,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:42:41,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:42:41,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:41,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:42,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:42,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84631869] [2025-03-17 19:42:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84631869] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 19:42:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689811065] [2025-03-17 19:42:42,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:42,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:42:42,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:42,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:42:42,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:42:42,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2025-03-17 19:42:42,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 96 transitions, 449 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) [2025-03-17 19:42:42,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:42,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2025-03-17 19:42:42,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:42,956 INFO L124 PetriNetUnfolderBase]: 3496/6816 cut-off events. [2025-03-17 19:42:42,956 INFO L125 PetriNetUnfolderBase]: For 14472/14855 co-relation queries the response was YES. [2025-03-17 19:42:42,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19185 conditions, 6816 events. 3496/6816 cut-off events. For 14472/14855 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 53364 event pairs, 354 based on Foata normal form. 397/6935 useless extension candidates. Maximal degree in co-relation 18082. Up to 1020 conditions per place. [2025-03-17 19:42:42,988 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 218 selfloop transitions, 16 changer transitions 0/270 dead transitions. [2025-03-17 19:42:42,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 270 transitions, 2129 flow [2025-03-17 19:42:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:42:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:42:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 540 transitions. [2025-03-17 19:42:42,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-17 19:42:42,990 INFO L175 Difference]: Start difference. First operand has 114 places, 96 transitions, 449 flow. Second operand 9 states and 540 transitions. [2025-03-17 19:42:42,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 270 transitions, 2129 flow [2025-03-17 19:42:43,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 270 transitions, 2050 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:43,022 INFO L231 Difference]: Finished difference. Result has 119 places, 96 transitions, 475 flow [2025-03-17 19:42:43,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=475, PETRI_PLACES=119, PETRI_TRANSITIONS=96} [2025-03-17 19:42:43,023 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 30 predicate places. [2025-03-17 19:42:43,023 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 96 transitions, 475 flow [2025-03-17 19:42:43,023 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) [2025-03-17 19:42:43,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:43,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:43,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 19:42:43,023 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:43,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2083592145, now seen corresponding path program 1 times [2025-03-17 19:42:43,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847511481] [2025-03-17 19:42:43,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:43,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:42:43,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:42:43,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:43,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847511481] [2025-03-17 19:42:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847511481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:42:43,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601712085] [2025-03-17 19:42:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:43,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:42:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:43,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:42:43,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:42:43,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 96 [2025-03-17 19:42:43,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 96 transitions, 475 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) [2025-03-17 19:42:43,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:43,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 96 [2025-03-17 19:42:43,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:43,904 INFO L124 PetriNetUnfolderBase]: 4085/7583 cut-off events. [2025-03-17 19:42:43,904 INFO L125 PetriNetUnfolderBase]: For 17310/18158 co-relation queries the response was YES. [2025-03-17 19:42:43,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22139 conditions, 7583 events. 4085/7583 cut-off events. For 17310/18158 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 58078 event pairs, 210 based on Foata normal form. 652/7945 useless extension candidates. Maximal degree in co-relation 20884. Up to 3236 conditions per place. [2025-03-17 19:42:43,940 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 141 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2025-03-17 19:42:43,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 191 transitions, 1311 flow [2025-03-17 19:42:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:42:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:42:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 458 transitions. [2025-03-17 19:42:43,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6815476190476191 [2025-03-17 19:42:43,941 INFO L175 Difference]: Start difference. First operand has 119 places, 96 transitions, 475 flow. Second operand 7 states and 458 transitions. [2025-03-17 19:42:43,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 191 transitions, 1311 flow [2025-03-17 19:42:43,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 191 transitions, 1208 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 19:42:43,974 INFO L231 Difference]: Finished difference. Result has 117 places, 95 transitions, 478 flow [2025-03-17 19:42:43,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=117, PETRI_TRANSITIONS=95} [2025-03-17 19:42:43,975 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2025-03-17 19:42:43,975 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 95 transitions, 478 flow [2025-03-17 19:42:43,975 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) [2025-03-17 19:42:43,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:43,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:43,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 19:42:43,975 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:43,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:43,976 INFO L85 PathProgramCache]: Analyzing trace with hash 279607027, now seen corresponding path program 1 times [2025-03-17 19:42:43,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:43,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115756527] [2025-03-17 19:42:43,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:43,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:43,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:42:43,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:42:43,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:43,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:44,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:44,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115756527] [2025-03-17 19:42:44,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115756527] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:44,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:44,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480648766] [2025-03-17 19:42:44,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:44,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:44,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:44,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:44,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2025-03-17 19:42:44,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 95 transitions, 478 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) [2025-03-17 19:42:44,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:44,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2025-03-17 19:42:44,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:44,377 INFO L124 PetriNetUnfolderBase]: 2525/6003 cut-off events. [2025-03-17 19:42:44,377 INFO L125 PetriNetUnfolderBase]: For 14194/14627 co-relation queries the response was YES. [2025-03-17 19:42:44,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16202 conditions, 6003 events. 2525/6003 cut-off events. For 14194/14627 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 52739 event pairs, 634 based on Foata normal form. 398/6093 useless extension candidates. Maximal degree in co-relation 15133. Up to 2216 conditions per place. [2025-03-17 19:42:44,402 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 68 selfloop transitions, 11 changer transitions 0/118 dead transitions. [2025-03-17 19:42:44,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 118 transitions, 744 flow [2025-03-17 19:42:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2025-03-17 19:42:44,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-17 19:42:44,404 INFO L175 Difference]: Start difference. First operand has 117 places, 95 transitions, 478 flow. Second operand 4 states and 280 transitions. [2025-03-17 19:42:44,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 118 transitions, 744 flow [2025-03-17 19:42:44,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 118 transitions, 717 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:42:44,431 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 469 flow [2025-03-17 19:42:44,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=469, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2025-03-17 19:42:44,431 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 25 predicate places. [2025-03-17 19:42:44,431 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 469 flow [2025-03-17 19:42:44,432 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) [2025-03-17 19:42:44,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:44,432 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:44,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-17 19:42:44,432 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:44,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1541059878, now seen corresponding path program 1 times [2025-03-17 19:42:44,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:44,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882406809] [2025-03-17 19:42:44,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:44,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:44,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:42:44,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:42:44,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:44,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:44,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882406809] [2025-03-17 19:42:44,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882406809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:44,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:44,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:42:44,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190788991] [2025-03-17 19:42:44,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:44,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:44,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:44,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:44,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:44,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 96 [2025-03-17 19:42:44,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 54.4) internal successors, (272), 5 states have internal predecessors, (272), 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) [2025-03-17 19:42:44,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:44,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 96 [2025-03-17 19:42:44,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:44,966 INFO L124 PetriNetUnfolderBase]: 3032/6501 cut-off events. [2025-03-17 19:42:44,966 INFO L125 PetriNetUnfolderBase]: For 15764/16127 co-relation queries the response was YES. [2025-03-17 19:42:44,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18005 conditions, 6501 events. 3032/6501 cut-off events. For 15764/16127 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53975 event pairs, 1430 based on Foata normal form. 385/6569 useless extension candidates. Maximal degree in co-relation 16934. Up to 3034 conditions per place. [2025-03-17 19:42:44,995 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 166 selfloop transitions, 9 changer transitions 0/210 dead transitions. [2025-03-17 19:42:44,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 210 transitions, 1675 flow [2025-03-17 19:42:44,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2025-03-17 19:42:44,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2025-03-17 19:42:44,996 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 469 flow. Second operand 6 states and 424 transitions. [2025-03-17 19:42:44,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 210 transitions, 1675 flow [2025-03-17 19:42:45,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 210 transitions, 1567 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:45,027 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 467 flow [2025-03-17 19:42:45,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2025-03-17 19:42:45,027 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 27 predicate places. [2025-03-17 19:42:45,028 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 467 flow [2025-03-17 19:42:45,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.4) internal successors, (272), 5 states have internal predecessors, (272), 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) [2025-03-17 19:42:45,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:45,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:45,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 19:42:45,028 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:45,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1835218548, now seen corresponding path program 1 times [2025-03-17 19:42:45,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:45,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322466529] [2025-03-17 19:42:45,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:45,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:42:45,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:42:45,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:45,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:45,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:45,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322466529] [2025-03-17 19:42:45,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322466529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:45,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:45,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:45,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695226727] [2025-03-17 19:42:45,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:45,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:45,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:45,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:45,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:45,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-17 19:42:45,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 467 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) [2025-03-17 19:42:45,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:45,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-17 19:42:45,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:45,988 INFO L124 PetriNetUnfolderBase]: 4914/10949 cut-off events. [2025-03-17 19:42:45,988 INFO L125 PetriNetUnfolderBase]: For 24277/24931 co-relation queries the response was YES. [2025-03-17 19:42:46,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30959 conditions, 10949 events. 4914/10949 cut-off events. For 24277/24931 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 95284 event pairs, 2592 based on Foata normal form. 616/11176 useless extension candidates. Maximal degree in co-relation 28460. Up to 4195 conditions per place. [2025-03-17 19:42:46,054 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 130 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2025-03-17 19:42:46,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 173 transitions, 1245 flow [2025-03-17 19:42:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2025-03-17 19:42:46,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8255208333333334 [2025-03-17 19:42:46,055 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 467 flow. Second operand 4 states and 317 transitions. [2025-03-17 19:42:46,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 173 transitions, 1245 flow [2025-03-17 19:42:46,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 173 transitions, 1226 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-17 19:42:46,119 INFO L231 Difference]: Finished difference. Result has 119 places, 98 transitions, 498 flow [2025-03-17 19:42:46,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=119, PETRI_TRANSITIONS=98} [2025-03-17 19:42:46,120 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 30 predicate places. [2025-03-17 19:42:46,120 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 98 transitions, 498 flow [2025-03-17 19:42:46,120 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) [2025-03-17 19:42:46,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:46,120 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:46,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 19:42:46,120 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:46,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:46,121 INFO L85 PathProgramCache]: Analyzing trace with hash -166846380, now seen corresponding path program 1 times [2025-03-17 19:42:46,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:46,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607324875] [2025-03-17 19:42:46,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:46,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:42:46,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:42:46,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:46,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:46,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:46,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607324875] [2025-03-17 19:42:46,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607324875] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:46,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:46,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 19:42:46,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736199111] [2025-03-17 19:42:46,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:46,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:42:46,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:46,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:42:46,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:42:46,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2025-03-17 19:42:46,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 98 transitions, 498 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) [2025-03-17 19:42:46,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:46,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2025-03-17 19:42:46,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:47,393 INFO L124 PetriNetUnfolderBase]: 7000/13027 cut-off events. [2025-03-17 19:42:47,393 INFO L125 PetriNetUnfolderBase]: For 33456/34860 co-relation queries the response was YES. [2025-03-17 19:42:47,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38622 conditions, 13027 events. 7000/13027 cut-off events. For 33456/34860 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 103139 event pairs, 402 based on Foata normal form. 1683/14197 useless extension candidates. Maximal degree in co-relation 30703. Up to 3040 conditions per place. [2025-03-17 19:42:47,458 INFO L140 encePairwiseOnDemand]: 84/96 looper letters, 212 selfloop transitions, 22 changer transitions 0/266 dead transitions. [2025-03-17 19:42:47,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 266 transitions, 1884 flow [2025-03-17 19:42:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:42:47,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:42:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 535 transitions. [2025-03-17 19:42:47,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6192129629629629 [2025-03-17 19:42:47,462 INFO L175 Difference]: Start difference. First operand has 119 places, 98 transitions, 498 flow. Second operand 9 states and 535 transitions. [2025-03-17 19:42:47,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 266 transitions, 1884 flow [2025-03-17 19:42:47,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 266 transitions, 1863 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:47,554 INFO L231 Difference]: Finished difference. Result has 126 places, 98 transitions, 547 flow [2025-03-17 19:42:47,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=547, PETRI_PLACES=126, PETRI_TRANSITIONS=98} [2025-03-17 19:42:47,554 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 37 predicate places. [2025-03-17 19:42:47,554 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 98 transitions, 547 flow [2025-03-17 19:42:47,554 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) [2025-03-17 19:42:47,554 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:47,554 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:47,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 19:42:47,555 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:47,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash -656542837, now seen corresponding path program 1 times [2025-03-17 19:42:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511652971] [2025-03-17 19:42:47,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:47,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:42:47,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:42:47,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:47,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511652971] [2025-03-17 19:42:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511652971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:47,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:47,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:47,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341419037] [2025-03-17 19:42:47,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:47,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:47,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:47,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:47,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 96 [2025-03-17 19:42:47,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 98 transitions, 547 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) [2025-03-17 19:42:47,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:47,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 96 [2025-03-17 19:42:47,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:48,187 INFO L124 PetriNetUnfolderBase]: 4943/10878 cut-off events. [2025-03-17 19:42:48,187 INFO L125 PetriNetUnfolderBase]: For 35054/35954 co-relation queries the response was YES. [2025-03-17 19:42:48,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33775 conditions, 10878 events. 4943/10878 cut-off events. For 35054/35954 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 94836 event pairs, 1210 based on Foata normal form. 838/11559 useless extension candidates. Maximal degree in co-relation 32229. Up to 4577 conditions per place. [2025-03-17 19:42:48,244 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 78 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2025-03-17 19:42:48,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 125 transitions, 867 flow [2025-03-17 19:42:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2025-03-17 19:42:48,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2025-03-17 19:42:48,245 INFO L175 Difference]: Start difference. First operand has 126 places, 98 transitions, 547 flow. Second operand 4 states and 276 transitions. [2025-03-17 19:42:48,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 125 transitions, 867 flow [2025-03-17 19:42:48,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 829 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 19:42:48,363 INFO L231 Difference]: Finished difference. Result has 121 places, 97 transitions, 523 flow [2025-03-17 19:42:48,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=121, PETRI_TRANSITIONS=97} [2025-03-17 19:42:48,363 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 32 predicate places. [2025-03-17 19:42:48,364 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 97 transitions, 523 flow [2025-03-17 19:42:48,364 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) [2025-03-17 19:42:48,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:48,364 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:48,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-17 19:42:48,364 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:48,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1881518570, now seen corresponding path program 1 times [2025-03-17 19:42:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:48,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741519331] [2025-03-17 19:42:48,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:48,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:48,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:42:48,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:42:48,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:48,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:48,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:48,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741519331] [2025-03-17 19:42:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741519331] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:48,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:48,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:48,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824478232] [2025-03-17 19:42:48,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:48,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:48,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:48,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:48,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:48,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:48,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 97 transitions, 523 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) [2025-03-17 19:42:48,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:48,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:48,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:49,061 INFO L124 PetriNetUnfolderBase]: 5600/11567 cut-off events. [2025-03-17 19:42:49,061 INFO L125 PetriNetUnfolderBase]: For 33985/35037 co-relation queries the response was YES. [2025-03-17 19:42:49,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35019 conditions, 11567 events. 5600/11567 cut-off events. For 33985/35037 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 97733 event pairs, 2220 based on Foata normal form. 966/12376 useless extension candidates. Maximal degree in co-relation 33459. Up to 4751 conditions per place. [2025-03-17 19:42:49,120 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 110 selfloop transitions, 9 changer transitions 0/153 dead transitions. [2025-03-17 19:42:49,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 153 transitions, 1055 flow [2025-03-17 19:42:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2025-03-17 19:42:49,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7526041666666666 [2025-03-17 19:42:49,121 INFO L175 Difference]: Start difference. First operand has 121 places, 97 transitions, 523 flow. Second operand 4 states and 289 transitions. [2025-03-17 19:42:49,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 153 transitions, 1055 flow [2025-03-17 19:42:49,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 1026 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:49,233 INFO L231 Difference]: Finished difference. Result has 120 places, 96 transitions, 502 flow [2025-03-17 19:42:49,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=502, PETRI_PLACES=120, PETRI_TRANSITIONS=96} [2025-03-17 19:42:49,233 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 31 predicate places. [2025-03-17 19:42:49,233 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 96 transitions, 502 flow [2025-03-17 19:42:49,233 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) [2025-03-17 19:42:49,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:49,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:49,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-17 19:42:49,233 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:49,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:49,234 INFO L85 PathProgramCache]: Analyzing trace with hash -877269744, now seen corresponding path program 1 times [2025-03-17 19:42:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:49,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797362476] [2025-03-17 19:42:49,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:49,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:49,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:42:49,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:42:49,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:49,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:49,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:49,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797362476] [2025-03-17 19:42:49,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797362476] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:49,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:49,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:49,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261057834] [2025-03-17 19:42:49,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:49,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:49,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:49,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:49,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:49,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-17 19:42:49,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 96 transitions, 502 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) [2025-03-17 19:42:49,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:49,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-17 19:42:49,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:50,901 INFO L124 PetriNetUnfolderBase]: 9488/21033 cut-off events. [2025-03-17 19:42:50,901 INFO L125 PetriNetUnfolderBase]: For 56784/58623 co-relation queries the response was YES. [2025-03-17 19:42:50,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62292 conditions, 21033 events. 9488/21033 cut-off events. For 56784/58623 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 198437 event pairs, 3634 based on Foata normal form. 1645/22563 useless extension candidates. Maximal degree in co-relation 60032. Up to 7618 conditions per place. [2025-03-17 19:42:50,997 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 133 selfloop transitions, 10 changer transitions 0/178 dead transitions. [2025-03-17 19:42:50,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 178 transitions, 1292 flow [2025-03-17 19:42:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2025-03-17 19:42:50,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2025-03-17 19:42:50,998 INFO L175 Difference]: Start difference. First operand has 120 places, 96 transitions, 502 flow. Second operand 4 states and 315 transitions. [2025-03-17 19:42:50,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 178 transitions, 1292 flow [2025-03-17 19:42:51,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 178 transitions, 1267 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:42:51,130 INFO L231 Difference]: Finished difference. Result has 123 places, 105 transitions, 622 flow [2025-03-17 19:42:51,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=622, PETRI_PLACES=123, PETRI_TRANSITIONS=105} [2025-03-17 19:42:51,130 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 34 predicate places. [2025-03-17 19:42:51,130 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 105 transitions, 622 flow [2025-03-17 19:42:51,130 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) [2025-03-17 19:42:51,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:51,131 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] [2025-03-17 19:42:51,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-17 19:42:51,131 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:51,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:51,131 INFO L85 PathProgramCache]: Analyzing trace with hash 959642108, now seen corresponding path program 1 times [2025-03-17 19:42:51,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:51,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932679040] [2025-03-17 19:42:51,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:51,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:42:51,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:42:51,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:51,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:51,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:51,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932679040] [2025-03-17 19:42:51,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932679040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:51,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:51,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:51,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549252414] [2025-03-17 19:42:51,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:51,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:51,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:51,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:51,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 96 [2025-03-17 19:42:51,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 105 transitions, 622 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) [2025-03-17 19:42:51,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:51,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 96 [2025-03-17 19:42:51,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:53,154 INFO L124 PetriNetUnfolderBase]: 12634/24391 cut-off events. [2025-03-17 19:42:53,154 INFO L125 PetriNetUnfolderBase]: For 79617/82114 co-relation queries the response was YES. [2025-03-17 19:42:53,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76146 conditions, 24391 events. 12634/24391 cut-off events. For 79617/82114 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 212917 event pairs, 4644 based on Foata normal form. 2252/26423 useless extension candidates. Maximal degree in co-relation 73560. Up to 10070 conditions per place. [2025-03-17 19:42:53,348 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 120 selfloop transitions, 10 changer transitions 0/164 dead transitions. [2025-03-17 19:42:53,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 164 transitions, 1230 flow [2025-03-17 19:42:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2025-03-17 19:42:53,349 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7473958333333334 [2025-03-17 19:42:53,349 INFO L175 Difference]: Start difference. First operand has 123 places, 105 transitions, 622 flow. Second operand 4 states and 287 transitions. [2025-03-17 19:42:53,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 164 transitions, 1230 flow [2025-03-17 19:42:53,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 164 transitions, 1217 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:42:53,534 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 692 flow [2025-03-17 19:42:53,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=692, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2025-03-17 19:42:53,534 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 35 predicate places. [2025-03-17 19:42:53,534 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 692 flow [2025-03-17 19:42:53,535 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) [2025-03-17 19:42:53,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:53,535 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:53,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-17 19:42:53,535 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:53,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1668734470, now seen corresponding path program 1 times [2025-03-17 19:42:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271541716] [2025-03-17 19:42:53,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:53,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 19:42:53,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 19:42:53,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:53,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:53,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271541716] [2025-03-17 19:42:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271541716] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:42:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937995579] [2025-03-17 19:42:53,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:53,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:53,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:53,594 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) [2025-03-17 19:42:53,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:42:53,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 19:42:53,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 19:42:53,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:53,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:53,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:42:53,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:42:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:53,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:42:53,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937995579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:53,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:42:53,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:42:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087301111] [2025-03-17 19:42:53,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:53,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:42:53,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:53,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:42:53,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:42:53,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-17 19:42:53,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 692 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) [2025-03-17 19:42:53,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:53,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-17 19:42:53,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:55,616 INFO L124 PetriNetUnfolderBase]: 9976/20881 cut-off events. [2025-03-17 19:42:55,616 INFO L125 PetriNetUnfolderBase]: For 73101/74765 co-relation queries the response was YES. [2025-03-17 19:42:55,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69365 conditions, 20881 events. 9976/20881 cut-off events. For 73101/74765 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 187800 event pairs, 348 based on Foata normal form. 1680/22367 useless extension candidates. Maximal degree in co-relation 66676. Up to 6388 conditions per place. [2025-03-17 19:42:55,774 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 253 selfloop transitions, 9 changer transitions 0/296 dead transitions. [2025-03-17 19:42:55,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 296 transitions, 2933 flow [2025-03-17 19:42:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 465 transitions. [2025-03-17 19:42:55,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8072916666666666 [2025-03-17 19:42:55,775 INFO L175 Difference]: Start difference. First operand has 124 places, 108 transitions, 692 flow. Second operand 6 states and 465 transitions. [2025-03-17 19:42:55,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 296 transitions, 2933 flow [2025-03-17 19:42:55,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 296 transitions, 2888 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:55,957 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 697 flow [2025-03-17 19:42:55,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=697, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2025-03-17 19:42:55,958 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2025-03-17 19:42:55,958 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 697 flow [2025-03-17 19:42:55,958 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) [2025-03-17 19:42:55,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:55,958 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:42:55,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:42:56,163 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,SelfDestructingSolverStorable31 [2025-03-17 19:42:56,163 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:42:56,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash -191160382, now seen corresponding path program 1 times [2025-03-17 19:42:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:56,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091017070] [2025-03-17 19:42:56,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:56,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:42:56,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:42:56,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:56,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:56,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:56,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091017070] [2025-03-17 19:42:56,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091017070] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:42:56,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942802285] [2025-03-17 19:42:56,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:56,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:56,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:56,212 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) [2025-03-17 19:42:56,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:42:56,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:42:56,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:42:56,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:56,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:56,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:42:56,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:42:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:56,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:42:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:56,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942802285] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:42:56,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:42:56,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:42:56,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965285803] [2025-03-17 19:42:56,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:42:56,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:42:56,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:56,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:42:56,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:42:56,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-17 19:42:56,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 697 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) [2025-03-17 19:42:56,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:56,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-17 19:42:56,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:01,243 INFO L124 PetriNetUnfolderBase]: 23914/50376 cut-off events. [2025-03-17 19:43:01,244 INFO L125 PetriNetUnfolderBase]: For 173208/177339 co-relation queries the response was YES. [2025-03-17 19:43:01,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165499 conditions, 50376 events. 23914/50376 cut-off events. For 173208/177339 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 474213 event pairs, 5412 based on Foata normal form. 4293/54502 useless extension candidates. Maximal degree in co-relation 161945. Up to 8668 conditions per place. [2025-03-17 19:43:01,561 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 480 selfloop transitions, 17 changer transitions 0/531 dead transitions. [2025-03-17 19:43:01,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 531 transitions, 5339 flow [2025-03-17 19:43:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:43:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:43:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 806 transitions. [2025-03-17 19:43:01,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8395833333333333 [2025-03-17 19:43:01,562 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 697 flow. Second operand 10 states and 806 transitions. [2025-03-17 19:43:01,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 531 transitions, 5339 flow [2025-03-17 19:43:02,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 531 transitions, 5298 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-03-17 19:43:02,393 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 797 flow [2025-03-17 19:43:02,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=797, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2025-03-17 19:43:02,394 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 46 predicate places. [2025-03-17 19:43:02,394 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 797 flow [2025-03-17 19:43:02,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2025-03-17 19:43:02,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:02,394 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:02,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:43:02,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-17 19:43:02,595 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:43:02,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1357175191, now seen corresponding path program 1 times [2025-03-17 19:43:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401089953] [2025-03-17 19:43:02,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:02,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 19:43:02,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 19:43:02,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:02,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:02,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401089953] [2025-03-17 19:43:02,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401089953] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149074294] [2025-03-17 19:43:02,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:02,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:02,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:02,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:43:02,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:43:02,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 19:43:02,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 19:43:02,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:02,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:02,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:43:02,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:02,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:43:02,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149074294] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:02,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:43:02,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:43:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361088907] [2025-03-17 19:43:02,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:02,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:43:02,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:02,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:43:02,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:43:02,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-17 19:43:02,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 797 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2025-03-17 19:43:02,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:02,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-17 19:43:02,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:07,826 INFO L124 PetriNetUnfolderBase]: 23963/52285 cut-off events. [2025-03-17 19:43:07,827 INFO L125 PetriNetUnfolderBase]: For 187425/191744 co-relation queries the response was YES. [2025-03-17 19:43:08,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165722 conditions, 52285 events. 23963/52285 cut-off events. For 187425/191744 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 514365 event pairs, 488 based on Foata normal form. 4345/56390 useless extension candidates. Maximal degree in co-relation 131916. Up to 15345 conditions per place. [2025-03-17 19:43:08,177 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 239 selfloop transitions, 23 changer transitions 0/295 dead transitions. [2025-03-17 19:43:08,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 295 transitions, 2482 flow [2025-03-17 19:43:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:43:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:43:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 461 transitions. [2025-03-17 19:43:08,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8003472222222222 [2025-03-17 19:43:08,179 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 797 flow. Second operand 6 states and 461 transitions. [2025-03-17 19:43:08,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 295 transitions, 2482 flow [2025-03-17 19:43:09,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 295 transitions, 2417 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:09,403 INFO L231 Difference]: Finished difference. Result has 137 places, 118 transitions, 826 flow [2025-03-17 19:43:09,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=826, PETRI_PLACES=137, PETRI_TRANSITIONS=118} [2025-03-17 19:43:09,404 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 48 predicate places. [2025-03-17 19:43:09,404 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 118 transitions, 826 flow [2025-03-17 19:43:09,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2025-03-17 19:43:09,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:09,404 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:09,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 19:43:09,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:09,604 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:43:09,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash 877242718, now seen corresponding path program 1 times [2025-03-17 19:43:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184772477] [2025-03-17 19:43:09,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:09,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 19:43:09,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:43:09,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:09,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:09,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:09,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184772477] [2025-03-17 19:43:09,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184772477] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:09,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295379350] [2025-03-17 19:43:09,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:09,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:09,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:09,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:43:09,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:43:09,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 19:43:09,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:43:09,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:09,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:09,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:43:09,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:09,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:09,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295379350] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:09,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:09,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:43:09,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125504600] [2025-03-17 19:43:09,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:09,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:43:09,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:09,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:43:09,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:43:09,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-17 19:43:09,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 118 transitions, 826 flow. Second operand has 12 states, 12 states have (on average 61.916666666666664) internal successors, (743), 12 states have internal predecessors, (743), 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) [2025-03-17 19:43:09,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:09,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-17 19:43:09,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:22,952 INFO L124 PetriNetUnfolderBase]: 58508/127955 cut-off events. [2025-03-17 19:43:22,953 INFO L125 PetriNetUnfolderBase]: For 495386/506009 co-relation queries the response was YES. [2025-03-17 19:43:23,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410555 conditions, 127955 events. 58508/127955 cut-off events. For 495386/506009 co-relation queries the response was YES. Maximal size of possible extension queue 1401. Compared 1381213 event pairs, 9063 based on Foata normal form. 10775/138655 useless extension candidates. Maximal degree in co-relation 327076. Up to 19379 conditions per place. [2025-03-17 19:43:24,053 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 461 selfloop transitions, 45 changer transitions 0/539 dead transitions. [2025-03-17 19:43:24,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 539 transitions, 4739 flow [2025-03-17 19:43:24,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:43:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:43:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2025-03-17 19:43:24,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.83125 [2025-03-17 19:43:24,054 INFO L175 Difference]: Start difference. First operand has 137 places, 118 transitions, 826 flow. Second operand 10 states and 798 transitions. [2025-03-17 19:43:24,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 539 transitions, 4739 flow [2025-03-17 19:43:25,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 539 transitions, 4621 flow, removed 40 selfloop flow, removed 4 redundant places. [2025-03-17 19:43:25,658 INFO L231 Difference]: Finished difference. Result has 145 places, 151 transitions, 1297 flow [2025-03-17 19:43:25,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1297, PETRI_PLACES=145, PETRI_TRANSITIONS=151} [2025-03-17 19:43:25,658 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 56 predicate places. [2025-03-17 19:43:25,658 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 151 transitions, 1297 flow [2025-03-17 19:43:25,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 61.916666666666664) internal successors, (743), 12 states have internal predecessors, (743), 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) [2025-03-17 19:43:25,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:25,659 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-03-17 19:43:25,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:43:25,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:25,859 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2025-03-17 19:43:25,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash 923145224, now seen corresponding path program 2 times [2025-03-17 19:43:25,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:25,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269812285] [2025-03-17 19:43:25,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:43:25,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:25,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-03-17 19:43:25,868 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 78 statements. [2025-03-17 19:43:25,868 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:43:25,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-03-17 19:43:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269812285] [2025-03-17 19:43:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269812285] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953344624] [2025-03-17 19:43:25,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:43:25,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:25,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:43:25,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:43:25,934 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-03-17 19:43:25,943 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 78 statements. [2025-03-17 19:43:25,943 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:43:25,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:25,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:43:25,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-03-17 19:43:26,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-03-17 19:43:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953344624] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:26,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:26,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:43:26,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269144330] [2025-03-17 19:43:26,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:26,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:43:26,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:26,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:43:26,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:43:26,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 96 [2025-03-17 19:43:26,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 151 transitions, 1297 flow. Second operand has 5 states, 5 states have (on average 61.8) internal successors, (309), 5 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) [2025-03-17 19:43:26,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:26,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 96 [2025-03-17 19:43:26,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand