/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 11:06:11,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 11:06:11,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 11:06:11,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 11:06:11,312 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 11:06:11,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 11:06:11,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 11:06:11,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 11:06:11,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 11:06:11,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 11:06:11,341 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 11:06:11,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 11:06:11,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 11:06:11,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 11:06:11,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 11:06:11,342 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 11:06:11,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 11:06:11,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 11:06:11,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 11:06:11,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 11:06:11,343 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 11:06:11,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 11:06:11,344 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 11:06:11,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 11:06:11,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 11:06:11,345 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 11:06:11,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 11:06:11,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 11:06:11,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 11:06:11,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 11:06:11,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 11:06:11,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 11:06:11,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 11:06:11,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 11:06:11,346 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 11:06:11,346 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 11:06:11,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 11:06:11,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 11:06:11,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 11:06:11,590 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 11:06:11,592 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 11:06:11,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2023-08-26 11:06:12,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 11:06:12,643 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 11:06:12,644 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2023-08-26 11:06:12,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a197c0f1/3eb1d7a464184351ba8cea604172a059/FLAGe06d23cca [2023-08-26 11:06:12,659 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a197c0f1/3eb1d7a464184351ba8cea604172a059 [2023-08-26 11:06:12,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 11:06:12,662 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 11:06:12,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 11:06:12,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 11:06:12,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 11:06:12,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9c8f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12, skipping insertion in model container [2023-08-26 11:06:12,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,679 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 11:06:12,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 11:06:12,816 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 11:06:12,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 11:06:12,865 INFO L206 MainTranslator]: Completed translation [2023-08-26 11:06:12,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12 WrapperNode [2023-08-26 11:06:12,866 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 11:06:12,867 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 11:06:12,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 11:06:12,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 11:06:12,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,923 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 318 [2023-08-26 11:06:12,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 11:06:12,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 11:06:12,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 11:06:12,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 11:06:12,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,939 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,964 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,969 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,971 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 11:06:12,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 11:06:12,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 11:06:12,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 11:06:12,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (1/1) ... [2023-08-26 11:06:12,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 11:06:12,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:06:12,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 11:06:13,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 11:06:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 11:06:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 11:06:13,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 11:06:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 11:06:13,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 11:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 11:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 11:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 11:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 11:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 11:06:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 11:06:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 11:06:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 11:06:13,028 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 11:06:13,132 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 11:06:13,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 11:06:13,519 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 11:06:13,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 11:06:13,530 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 11:06:13,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:06:13 BoogieIcfgContainer [2023-08-26 11:06:13,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 11:06:13,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 11:06:13,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 11:06:13,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 11:06:13,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:06:12" (1/3) ... [2023-08-26 11:06:13,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e861d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:06:13, skipping insertion in model container [2023-08-26 11:06:13,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:06:12" (2/3) ... [2023-08-26 11:06:13,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e861d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:06:13, skipping insertion in model container [2023-08-26 11:06:13,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:06:13" (3/3) ... [2023-08-26 11:06:13,551 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2023-08-26 11:06:13,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 11:06:13,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-08-26 11:06:13,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 11:06:13,675 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 11:06:13,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 391 transitions, 798 flow [2023-08-26 11:06:13,791 INFO L124 PetriNetUnfolderBase]: 21/389 cut-off events. [2023-08-26 11:06:13,792 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 11:06:13,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 389 events. 21/389 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 556 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2023-08-26 11:06:13,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 391 transitions, 798 flow [2023-08-26 11:06:13,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 380 transitions, 772 flow [2023-08-26 11:06:13,805 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 11:06:13,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 366 places, 380 transitions, 772 flow [2023-08-26 11:06:13,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 366 places, 380 transitions, 772 flow [2023-08-26 11:06:13,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 380 transitions, 772 flow [2023-08-26 11:06:13,877 INFO L124 PetriNetUnfolderBase]: 21/380 cut-off events. [2023-08-26 11:06:13,877 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 11:06:13,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 380 events. 21/380 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 522 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2023-08-26 11:06:13,891 INFO L119 LiptonReduction]: Number of co-enabled transitions 26900 [2023-08-26 11:06:19,720 INFO L134 LiptonReduction]: Checked pairs total: 105957 [2023-08-26 11:06:19,720 INFO L136 LiptonReduction]: Total number of compositions: 399 [2023-08-26 11:06:19,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 11:06:19,733 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6cb2bb9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 11:06:19,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2023-08-26 11:06:19,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 11:06:19,734 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 11:06:19,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 11:06:19,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:19,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 11:06:19,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:19,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1518, now seen corresponding path program 1 times [2023-08-26 11:06:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053739541] [2023-08-26 11:06:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:06:19,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:19,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053739541] [2023-08-26 11:06:19,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053739541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:19,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:19,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 11:06:19,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655255959] [2023-08-26 11:06:19,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:19,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 11:06:19,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 11:06:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 11:06:19,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 790 [2023-08-26 11:06:19,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 270 flow. Second operand has 2 states, 2 states have (on average 373.5) internal successors, (747), 2 states have internal predecessors, (747), 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) [2023-08-26 11:06:19,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:19,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 790 [2023-08-26 11:06:19,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:20,102 INFO L124 PetriNetUnfolderBase]: 1031/2350 cut-off events. [2023-08-26 11:06:20,102 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-08-26 11:06:20,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3990 conditions, 2350 events. 1031/2350 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14917 event pairs, 716 based on Foata normal form. 293/2262 useless extension candidates. Maximal degree in co-relation 3611. Up to 1589 conditions per place. [2023-08-26 11:06:20,113 INFO L140 encePairwiseOnDemand]: 757/790 looper letters, 48 selfloop transitions, 0 changer transitions 0/96 dead transitions. [2023-08-26 11:06:20,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 300 flow [2023-08-26 11:06:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 11:06:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 11:06:20,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 827 transitions. [2023-08-26 11:06:20,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234177215189874 [2023-08-26 11:06:20,126 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 827 transitions. [2023-08-26 11:06:20,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 827 transitions. [2023-08-26 11:06:20,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:20,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 827 transitions. [2023-08-26 11:06:20,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 413.5) internal successors, (827), 2 states have internal predecessors, (827), 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) [2023-08-26 11:06:20,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 790.0) internal successors, (2370), 3 states have internal predecessors, (2370), 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) [2023-08-26 11:06:20,141 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 790.0) internal successors, (2370), 3 states have internal predecessors, (2370), 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) [2023-08-26 11:06:20,142 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 270 flow. Second operand 2 states and 827 transitions. [2023-08-26 11:06:20,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 300 flow [2023-08-26 11:06:20,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 292 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 11:06:20,147 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 196 flow [2023-08-26 11:06:20,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=196, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-26 11:06:20,151 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -32 predicate places. [2023-08-26 11:06:20,151 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 196 flow [2023-08-26 11:06:20,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 373.5) internal successors, (747), 2 states have internal predecessors, (747), 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) [2023-08-26 11:06:20,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:20,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 11:06:20,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 11:06:20,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:20,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1823554766, now seen corresponding path program 1 times [2023-08-26 11:06:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:20,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891962691] [2023-08-26 11:06:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:20,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:06:20,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:20,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891962691] [2023-08-26 11:06:20,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891962691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:20,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:20,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:06:20,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358483324] [2023-08-26 11:06:20,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:20,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:06:20,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:20,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:06:20,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:06:20,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 790 [2023-08-26 11:06:20,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 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) [2023-08-26 11:06:20,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:20,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 790 [2023-08-26 11:06:20,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:20,428 INFO L124 PetriNetUnfolderBase]: 1013/2377 cut-off events. [2023-08-26 11:06:20,429 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-26 11:06:20,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 2377 events. 1013/2377 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 14804 event pairs, 830 based on Foata normal form. 0/2133 useless extension candidates. Maximal degree in co-relation 4038. Up to 1648 conditions per place. [2023-08-26 11:06:20,438 INFO L140 encePairwiseOnDemand]: 787/790 looper letters, 49 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-26 11:06:20,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 292 flow [2023-08-26 11:06:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:06:20,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:06:20,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1135 transitions. [2023-08-26 11:06:20,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-08-26 11:06:20,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1135 transitions. [2023-08-26 11:06:20,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1135 transitions. [2023-08-26 11:06:20,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:20,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1135 transitions. [2023-08-26 11:06:20,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 378.3333333333333) internal successors, (1135), 3 states have internal predecessors, (1135), 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) [2023-08-26 11:06:20,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:20,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:20,448 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 196 flow. Second operand 3 states and 1135 transitions. [2023-08-26 11:06:20,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 292 flow [2023-08-26 11:06:20,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 11:06:20,451 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 194 flow [2023-08-26 11:06:20,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2023-08-26 11:06:20,451 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -32 predicate places. [2023-08-26 11:06:20,452 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 194 flow [2023-08-26 11:06:20,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 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) [2023-08-26 11:06:20,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:20,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:20,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 11:06:20,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:20,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash -88872888, now seen corresponding path program 1 times [2023-08-26 11:06:20,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459859798] [2023-08-26 11:06:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:20,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:06:20,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459859798] [2023-08-26 11:06:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459859798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:20,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:06:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352359122] [2023-08-26 11:06:20,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:20,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:06:20,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:20,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:06:20,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:06:20,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 790 [2023-08-26 11:06:20,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 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) [2023-08-26 11:06:20,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:20,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 790 [2023-08-26 11:06:20,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:20,951 INFO L124 PetriNetUnfolderBase]: 2536/5178 cut-off events. [2023-08-26 11:06:20,951 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-26 11:06:20,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9313 conditions, 5178 events. 2536/5178 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 34962 event pairs, 1044 based on Foata normal form. 0/4482 useless extension candidates. Maximal degree in co-relation 9309. Up to 2142 conditions per place. [2023-08-26 11:06:20,973 INFO L140 encePairwiseOnDemand]: 787/790 looper letters, 99 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-08-26 11:06:20,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 142 transitions, 495 flow [2023-08-26 11:06:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:06:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:06:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1185 transitions. [2023-08-26 11:06:20,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-26 11:06:20,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1185 transitions. [2023-08-26 11:06:20,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1185 transitions. [2023-08-26 11:06:20,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:20,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1185 transitions. [2023-08-26 11:06:20,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 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) [2023-08-26 11:06:20,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:20,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:20,983 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 194 flow. Second operand 3 states and 1185 transitions. [2023-08-26 11:06:20,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 142 transitions, 495 flow [2023-08-26 11:06:20,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 142 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:06:20,985 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 205 flow [2023-08-26 11:06:20,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2023-08-26 11:06:20,986 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -30 predicate places. [2023-08-26 11:06:20,986 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 205 flow [2023-08-26 11:06:20,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 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) [2023-08-26 11:06:20,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:20,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:20,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 11:06:20,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:20,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash -88928014, now seen corresponding path program 1 times [2023-08-26 11:06:20,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:20,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851591094] [2023-08-26 11:06:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:06:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851591094] [2023-08-26 11:06:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851591094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:21,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:21,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:06:21,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374359454] [2023-08-26 11:06:21,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:21,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:06:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:06:21,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:06:21,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 790 [2023-08-26 11:06:21,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 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) [2023-08-26 11:06:21,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:21,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 790 [2023-08-26 11:06:21,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:21,259 INFO L124 PetriNetUnfolderBase]: 1680/3811 cut-off events. [2023-08-26 11:06:21,259 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2023-08-26 11:06:21,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6790 conditions, 3811 events. 1680/3811 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 25915 event pairs, 1389 based on Foata normal form. 0/3439 useless extension candidates. Maximal degree in co-relation 6785. Up to 2723 conditions per place. [2023-08-26 11:06:21,277 INFO L140 encePairwiseOnDemand]: 784/790 looper letters, 49 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-26 11:06:21,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 295 flow [2023-08-26 11:06:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:06:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:06:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1101 transitions. [2023-08-26 11:06:21,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46455696202531643 [2023-08-26 11:06:21,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1101 transitions. [2023-08-26 11:06:21,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1101 transitions. [2023-08-26 11:06:21,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:21,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1101 transitions. [2023-08-26 11:06:21,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 367.0) internal successors, (1101), 3 states have internal predecessors, (1101), 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) [2023-08-26 11:06:21,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:21,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:21,287 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 205 flow. Second operand 3 states and 1101 transitions. [2023-08-26 11:06:21,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 295 flow [2023-08-26 11:06:21,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:06:21,289 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 195 flow [2023-08-26 11:06:21,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2023-08-26 11:06:21,289 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -34 predicate places. [2023-08-26 11:06:21,290 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 195 flow [2023-08-26 11:06:21,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 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) [2023-08-26 11:06:21,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:21,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:21,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 11:06:21,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:21,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:21,291 INFO L85 PathProgramCache]: Analyzing trace with hash 439971176, now seen corresponding path program 1 times [2023-08-26 11:06:21,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:21,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336486832] [2023-08-26 11:06:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:21,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:06:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336486832] [2023-08-26 11:06:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336486832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:21,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:21,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:06:21,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380548204] [2023-08-26 11:06:21,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:21,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:06:21,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:06:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:06:21,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 790 [2023-08-26 11:06:21,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 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) [2023-08-26 11:06:21,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:21,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 790 [2023-08-26 11:06:21,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:21,542 INFO L124 PetriNetUnfolderBase]: 1694/3707 cut-off events. [2023-08-26 11:06:21,542 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-08-26 11:06:21,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6654 conditions, 3707 events. 1694/3707 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 24582 event pairs, 556 based on Foata normal form. 0/3313 useless extension candidates. Maximal degree in co-relation 6649. Up to 2595 conditions per place. [2023-08-26 11:06:21,555 INFO L140 encePairwiseOnDemand]: 783/790 looper letters, 65 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-26 11:06:21,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 103 transitions, 358 flow [2023-08-26 11:06:21,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:06:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:06:21,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1136 transitions. [2023-08-26 11:06:21,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47932489451476795 [2023-08-26 11:06:21,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1136 transitions. [2023-08-26 11:06:21,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1136 transitions. [2023-08-26 11:06:21,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:21,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1136 transitions. [2023-08-26 11:06:21,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 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) [2023-08-26 11:06:21,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:21,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:21,564 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 195 flow. Second operand 3 states and 1136 transitions. [2023-08-26 11:06:21,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 103 transitions, 358 flow [2023-08-26 11:06:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 103 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:06:21,568 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 198 flow [2023-08-26 11:06:21,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2023-08-26 11:06:21,570 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -37 predicate places. [2023-08-26 11:06:21,570 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 198 flow [2023-08-26 11:06:21,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 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) [2023-08-26 11:06:21,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:21,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:21,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 11:06:21,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:21,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:21,571 INFO L85 PathProgramCache]: Analyzing trace with hash -271588302, now seen corresponding path program 1 times [2023-08-26 11:06:21,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:21,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939989513] [2023-08-26 11:06:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:21,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:06:21,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:21,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939989513] [2023-08-26 11:06:21,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939989513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:21,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:21,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:06:21,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846679010] [2023-08-26 11:06:21,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:21,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:06:21,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:21,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:06:21,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:06:21,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 790 [2023-08-26 11:06:21,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 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) [2023-08-26 11:06:21,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:21,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 790 [2023-08-26 11:06:21,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:21,912 INFO L124 PetriNetUnfolderBase]: 1694/3708 cut-off events. [2023-08-26 11:06:21,913 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2023-08-26 11:06:21,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6848 conditions, 3708 events. 1694/3708 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 24586 event pairs, 1361 based on Foata normal form. 0/3312 useless extension candidates. Maximal degree in co-relation 6843. Up to 2755 conditions per place. [2023-08-26 11:06:21,924 INFO L140 encePairwiseOnDemand]: 787/790 looper letters, 50 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-26 11:06:21,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 304 flow [2023-08-26 11:06:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:06:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:06:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2023-08-26 11:06:21,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4704641350210971 [2023-08-26 11:06:21,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2023-08-26 11:06:21,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2023-08-26 11:06:21,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:21,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2023-08-26 11:06:21,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 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) [2023-08-26 11:06:21,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:21,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:21,933 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 198 flow. Second operand 3 states and 1115 transitions. [2023-08-26 11:06:21,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 304 flow [2023-08-26 11:06:21,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 11:06:21,935 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 210 flow [2023-08-26 11:06:21,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2023-08-26 11:06:21,935 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -34 predicate places. [2023-08-26 11:06:21,935 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 210 flow [2023-08-26 11:06:21,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 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) [2023-08-26 11:06:21,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:21,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:21,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 11:06:21,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:21,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1303425416, now seen corresponding path program 1 times [2023-08-26 11:06:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:21,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210223210] [2023-08-26 11:06:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210223210] [2023-08-26 11:06:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210223210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:22,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:22,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:06:22,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080735874] [2023-08-26 11:06:22,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:22,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 11:06:22,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:22,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 11:06:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 11:06:22,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 790 [2023-08-26 11:06:22,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 320.8333333333333) internal successors, (1925), 6 states have internal predecessors, (1925), 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) [2023-08-26 11:06:22,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:22,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 790 [2023-08-26 11:06:22,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:23,679 INFO L124 PetriNetUnfolderBase]: 14105/21739 cut-off events. [2023-08-26 11:06:23,679 INFO L125 PetriNetUnfolderBase]: For 1434/1434 co-relation queries the response was YES. [2023-08-26 11:06:23,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45005 conditions, 21739 events. 14105/21739 cut-off events. For 1434/1434 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 138027 event pairs, 1078 based on Foata normal form. 0/19400 useless extension candidates. Maximal degree in co-relation 44998. Up to 8427 conditions per place. [2023-08-26 11:06:23,752 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 322 selfloop transitions, 4 changer transitions 0/331 dead transitions. [2023-08-26 11:06:23,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 331 transitions, 1412 flow [2023-08-26 11:06:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:06:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:06:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2225 transitions. [2023-08-26 11:06:23,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4694092827004219 [2023-08-26 11:06:23,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2225 transitions. [2023-08-26 11:06:23,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2225 transitions. [2023-08-26 11:06:23,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:23,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2225 transitions. [2023-08-26 11:06:23,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 370.8333333333333) internal successors, (2225), 6 states have internal predecessors, (2225), 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) [2023-08-26 11:06:23,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:23,765 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:23,765 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 210 flow. Second operand 6 states and 2225 transitions. [2023-08-26 11:06:23,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 331 transitions, 1412 flow [2023-08-26 11:06:23,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 331 transitions, 1408 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 11:06:23,770 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 212 flow [2023-08-26 11:06:23,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=6, PETRI_FLOW=212, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2023-08-26 11:06:23,771 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -31 predicate places. [2023-08-26 11:06:23,771 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 212 flow [2023-08-26 11:06:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 320.8333333333333) internal successors, (1925), 6 states have internal predecessors, (1925), 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) [2023-08-26 11:06:23,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:23,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 11:06:23,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:23,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash 396319717, now seen corresponding path program 1 times [2023-08-26 11:06:23,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:23,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015659652] [2023-08-26 11:06:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:23,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:23,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:23,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015659652] [2023-08-26 11:06:23,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015659652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:23,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:23,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:06:23,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457999351] [2023-08-26 11:06:23,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:23,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:06:23,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:06:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:06:23,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 790 [2023-08-26 11:06:23,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 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) [2023-08-26 11:06:23,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:23,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 790 [2023-08-26 11:06:23,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:24,208 INFO L124 PetriNetUnfolderBase]: 3060/5425 cut-off events. [2023-08-26 11:06:24,209 INFO L125 PetriNetUnfolderBase]: For 1507/1507 co-relation queries the response was YES. [2023-08-26 11:06:24,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12039 conditions, 5425 events. 3060/5425 cut-off events. For 1507/1507 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 31481 event pairs, 581 based on Foata normal form. 0/4773 useless extension candidates. Maximal degree in co-relation 12032. Up to 3929 conditions per place. [2023-08-26 11:06:24,226 INFO L140 encePairwiseOnDemand]: 786/790 looper letters, 93 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-08-26 11:06:24,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 115 transitions, 474 flow [2023-08-26 11:06:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:06:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:06:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1085 transitions. [2023-08-26 11:06:24,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578059071729958 [2023-08-26 11:06:24,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1085 transitions. [2023-08-26 11:06:24,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1085 transitions. [2023-08-26 11:06:24,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:24,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1085 transitions. [2023-08-26 11:06:24,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 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) [2023-08-26 11:06:24,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:24,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:24,234 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 212 flow. Second operand 3 states and 1085 transitions. [2023-08-26 11:06:24,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 115 transitions, 474 flow [2023-08-26 11:06:24,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 465 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 11:06:24,236 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 224 flow [2023-08-26 11:06:24,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2023-08-26 11:06:24,237 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -32 predicate places. [2023-08-26 11:06:24,237 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 224 flow [2023-08-26 11:06:24,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 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) [2023-08-26 11:06:24,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:24,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 11:06:24,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:24,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1787851297, now seen corresponding path program 1 times [2023-08-26 11:06:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079063705] [2023-08-26 11:06:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:24,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079063705] [2023-08-26 11:06:24,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079063705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:24,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:24,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:06:24,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487206980] [2023-08-26 11:06:24,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:24,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 11:06:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:24,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 11:06:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 11:06:24,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 790 [2023-08-26 11:06:24,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 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) [2023-08-26 11:06:24,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:24,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 790 [2023-08-26 11:06:24,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:26,266 INFO L124 PetriNetUnfolderBase]: 15862/24707 cut-off events. [2023-08-26 11:06:26,266 INFO L125 PetriNetUnfolderBase]: For 1453/1453 co-relation queries the response was YES. [2023-08-26 11:06:26,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53617 conditions, 24707 events. 15862/24707 cut-off events. For 1453/1453 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 150643 event pairs, 9563 based on Foata normal form. 652/23327 useless extension candidates. Maximal degree in co-relation 53609. Up to 16934 conditions per place. [2023-08-26 11:06:26,347 INFO L140 encePairwiseOnDemand]: 784/790 looper letters, 289 selfloop transitions, 6 changer transitions 0/300 dead transitions. [2023-08-26 11:06:26,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 300 transitions, 1300 flow [2023-08-26 11:06:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:06:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:06:26,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2160 transitions. [2023-08-26 11:06:26,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45569620253164556 [2023-08-26 11:06:26,351 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2160 transitions. [2023-08-26 11:06:26,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2160 transitions. [2023-08-26 11:06:26,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:26,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2160 transitions. [2023-08-26 11:06:26,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 360.0) internal successors, (2160), 6 states have internal predecessors, (2160), 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) [2023-08-26 11:06:26,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:26,359 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:26,359 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 224 flow. Second operand 6 states and 2160 transitions. [2023-08-26 11:06:26,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 300 transitions, 1300 flow [2023-08-26 11:06:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 300 transitions, 1289 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:06:26,364 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 231 flow [2023-08-26 11:06:26,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2023-08-26 11:06:26,365 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -29 predicate places. [2023-08-26 11:06:26,365 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 231 flow [2023-08-26 11:06:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 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) [2023-08-26 11:06:26,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:26,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:26,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 11:06:26,366 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:26,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash 811808214, now seen corresponding path program 1 times [2023-08-26 11:06:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884884573] [2023-08-26 11:06:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:26,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:26,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884884573] [2023-08-26 11:06:26,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884884573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:26,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:26,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:06:26,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419448366] [2023-08-26 11:06:26,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:26,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 11:06:26,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:26,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 11:06:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 11:06:26,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 790 [2023-08-26 11:06:26,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 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) [2023-08-26 11:06:26,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:26,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 790 [2023-08-26 11:06:26,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:28,138 INFO L124 PetriNetUnfolderBase]: 14442/22547 cut-off events. [2023-08-26 11:06:28,139 INFO L125 PetriNetUnfolderBase]: For 4670/4670 co-relation queries the response was YES. [2023-08-26 11:06:28,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51621 conditions, 22547 events. 14442/22547 cut-off events. For 4670/4670 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 132874 event pairs, 7633 based on Foata normal form. 316/21369 useless extension candidates. Maximal degree in co-relation 51613. Up to 13404 conditions per place. [2023-08-26 11:06:28,204 INFO L140 encePairwiseOnDemand]: 764/790 looper letters, 159 selfloop transitions, 24 changer transitions 0/188 dead transitions. [2023-08-26 11:06:28,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 188 transitions, 885 flow [2023-08-26 11:06:28,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:06:28,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:06:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2001 transitions. [2023-08-26 11:06:28,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4221518987341772 [2023-08-26 11:06:28,208 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2001 transitions. [2023-08-26 11:06:28,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2001 transitions. [2023-08-26 11:06:28,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:28,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2001 transitions. [2023-08-26 11:06:28,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.5) internal successors, (2001), 6 states have internal predecessors, (2001), 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) [2023-08-26 11:06:28,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:28,216 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:28,216 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 231 flow. Second operand 6 states and 2001 transitions. [2023-08-26 11:06:28,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 188 transitions, 885 flow [2023-08-26 11:06:28,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 188 transitions, 825 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 11:06:28,223 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 259 flow [2023-08-26 11:06:28,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=259, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2023-08-26 11:06:28,223 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -33 predicate places. [2023-08-26 11:06:28,223 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 259 flow [2023-08-26 11:06:28,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 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) [2023-08-26 11:06:28,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:28,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:28,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 11:06:28,224 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:28,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash 694412619, now seen corresponding path program 1 times [2023-08-26 11:06:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405927004] [2023-08-26 11:06:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:28,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:28,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405927004] [2023-08-26 11:06:28,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405927004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:28,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:28,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:06:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852383333] [2023-08-26 11:06:28,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:28,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 11:06:28,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 11:06:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 11:06:28,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 790 [2023-08-26 11:06:28,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 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) [2023-08-26 11:06:28,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:28,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 790 [2023-08-26 11:06:28,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:30,147 INFO L124 PetriNetUnfolderBase]: 14338/22373 cut-off events. [2023-08-26 11:06:30,147 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2023-08-26 11:06:30,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52638 conditions, 22373 events. 14338/22373 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 131958 event pairs, 12377 based on Foata normal form. 0/20995 useless extension candidates. Maximal degree in co-relation 52630. Up to 21024 conditions per place. [2023-08-26 11:06:30,211 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 236 selfloop transitions, 4 changer transitions 10/255 dead transitions. [2023-08-26 11:06:30,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 255 transitions, 1353 flow [2023-08-26 11:06:30,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:06:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:06:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2147 transitions. [2023-08-26 11:06:30,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529535864978903 [2023-08-26 11:06:30,215 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2147 transitions. [2023-08-26 11:06:30,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2147 transitions. [2023-08-26 11:06:30,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:30,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2147 transitions. [2023-08-26 11:06:30,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 357.8333333333333) internal successors, (2147), 6 states have internal predecessors, (2147), 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) [2023-08-26 11:06:30,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:30,222 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:30,222 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 259 flow. Second operand 6 states and 2147 transitions. [2023-08-26 11:06:30,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 255 transitions, 1353 flow [2023-08-26 11:06:30,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 255 transitions, 1113 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 11:06:30,234 INFO L231 Difference]: Finished difference. Result has 92 places, 81 transitions, 209 flow [2023-08-26 11:06:30,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2023-08-26 11:06:30,234 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -34 predicate places. [2023-08-26 11:06:30,235 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 209 flow [2023-08-26 11:06:30,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 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) [2023-08-26 11:06:30,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:30,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 11:06:30,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:30,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1753541943, now seen corresponding path program 1 times [2023-08-26 11:06:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539687583] [2023-08-26 11:06:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539687583] [2023-08-26 11:06:30,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539687583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:30,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:30,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 11:06:30,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088537783] [2023-08-26 11:06:30,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:30,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:06:30,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:30,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:06:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:06:30,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 790 [2023-08-26 11:06:30,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2023-08-26 11:06:30,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:30,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 790 [2023-08-26 11:06:30,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:30,729 INFO L124 PetriNetUnfolderBase]: 3900/6706 cut-off events. [2023-08-26 11:06:30,729 INFO L125 PetriNetUnfolderBase]: For 698/698 co-relation queries the response was YES. [2023-08-26 11:06:30,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14139 conditions, 6706 events. 3900/6706 cut-off events. For 698/698 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 36641 event pairs, 1269 based on Foata normal form. 1/6346 useless extension candidates. Maximal degree in co-relation 14131. Up to 5747 conditions per place. [2023-08-26 11:06:30,747 INFO L140 encePairwiseOnDemand]: 786/790 looper letters, 93 selfloop transitions, 3 changer transitions 1/110 dead transitions. [2023-08-26 11:06:30,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 474 flow [2023-08-26 11:06:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:06:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:06:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1053 transitions. [2023-08-26 11:06:30,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443037974683544 [2023-08-26 11:06:30,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1053 transitions. [2023-08-26 11:06:30,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1053 transitions. [2023-08-26 11:06:30,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:30,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1053 transitions. [2023-08-26 11:06:30,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 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) [2023-08-26 11:06:30,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:30,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:30,754 INFO L175 Difference]: Start difference. First operand has 92 places, 81 transitions, 209 flow. Second operand 3 states and 1053 transitions. [2023-08-26 11:06:30,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 474 flow [2023-08-26 11:06:30,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 110 transitions, 465 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 11:06:30,756 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 225 flow [2023-08-26 11:06:30,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-08-26 11:06:30,756 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -36 predicate places. [2023-08-26 11:06:30,756 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 225 flow [2023-08-26 11:06:30,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2023-08-26 11:06:30,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:30,757 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:30,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 11:06:30,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:30,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash 551126964, now seen corresponding path program 1 times [2023-08-26 11:06:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040795363] [2023-08-26 11:06:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:30,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:30,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040795363] [2023-08-26 11:06:30,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040795363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:30,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:30,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:06:30,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707406399] [2023-08-26 11:06:30,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:30,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 11:06:30,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:30,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 11:06:30,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 11:06:30,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 790 [2023-08-26 11:06:30,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 358.4) internal successors, (1792), 5 states have internal predecessors, (1792), 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) [2023-08-26 11:06:30,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:30,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 790 [2023-08-26 11:06:30,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:31,271 INFO L124 PetriNetUnfolderBase]: 2376/5072 cut-off events. [2023-08-26 11:06:31,272 INFO L125 PetriNetUnfolderBase]: For 828/867 co-relation queries the response was YES. [2023-08-26 11:06:31,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10047 conditions, 5072 events. 2376/5072 cut-off events. For 828/867 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 34304 event pairs, 947 based on Foata normal form. 9/4774 useless extension candidates. Maximal degree in co-relation 10038. Up to 1836 conditions per place. [2023-08-26 11:06:31,288 INFO L140 encePairwiseOnDemand]: 781/790 looper letters, 145 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2023-08-26 11:06:31,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 181 transitions, 789 flow [2023-08-26 11:06:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 11:06:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 11:06:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1914 transitions. [2023-08-26 11:06:31,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48455696202531645 [2023-08-26 11:06:31,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1914 transitions. [2023-08-26 11:06:31,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1914 transitions. [2023-08-26 11:06:31,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:31,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1914 transitions. [2023-08-26 11:06:31,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 382.8) internal successors, (1914), 5 states have internal predecessors, (1914), 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) [2023-08-26 11:06:31,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 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) [2023-08-26 11:06:31,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 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) [2023-08-26 11:06:31,298 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 225 flow. Second operand 5 states and 1914 transitions. [2023-08-26 11:06:31,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 181 transitions, 789 flow [2023-08-26 11:06:31,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 181 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:06:31,301 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 290 flow [2023-08-26 11:06:31,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-08-26 11:06:31,301 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -30 predicate places. [2023-08-26 11:06:31,301 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 290 flow [2023-08-26 11:06:31,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 358.4) internal successors, (1792), 5 states have internal predecessors, (1792), 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) [2023-08-26 11:06:31,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:31,302 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 11:06:31,302 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:31,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash 531687156, now seen corresponding path program 2 times [2023-08-26 11:06:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62203839] [2023-08-26 11:06:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62203839] [2023-08-26 11:06:31,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62203839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:06:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603161239] [2023-08-26 11:06:31,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 11:06:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:06:31,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:06:31,408 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) [2023-08-26 11:06:31,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 11:06:31,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 11:06:31,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:06:31,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 11:06:31,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:06:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:31,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:06:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603161239] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 11:06:31,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 11:06:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2023-08-26 11:06:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022681137] [2023-08-26 11:06:31,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:31,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 11:06:31,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 11:06:31,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 11:06:31,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 790 [2023-08-26 11:06:31,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 362.25) internal successors, (1449), 4 states have internal predecessors, (1449), 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) [2023-08-26 11:06:31,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:31,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 790 [2023-08-26 11:06:31,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:32,046 INFO L124 PetriNetUnfolderBase]: 2302/4908 cut-off events. [2023-08-26 11:06:32,047 INFO L125 PetriNetUnfolderBase]: For 2151/2215 co-relation queries the response was YES. [2023-08-26 11:06:32,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10599 conditions, 4908 events. 2302/4908 cut-off events. For 2151/2215 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 32281 event pairs, 459 based on Foata normal form. 78/4882 useless extension candidates. Maximal degree in co-relation 10587. Up to 2276 conditions per place. [2023-08-26 11:06:32,065 INFO L140 encePairwiseOnDemand]: 784/790 looper letters, 76 selfloop transitions, 13 changer transitions 1/118 dead transitions. [2023-08-26 11:06:32,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 118 transitions, 581 flow [2023-08-26 11:06:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 11:06:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 11:06:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1501 transitions. [2023-08-26 11:06:32,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-08-26 11:06:32,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1501 transitions. [2023-08-26 11:06:32,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1501 transitions. [2023-08-26 11:06:32,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:32,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1501 transitions. [2023-08-26 11:06:32,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 375.25) internal successors, (1501), 4 states have internal predecessors, (1501), 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) [2023-08-26 11:06:32,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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) [2023-08-26 11:06:32,074 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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) [2023-08-26 11:06:32,074 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 290 flow. Second operand 4 states and 1501 transitions. [2023-08-26 11:06:32,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 118 transitions, 581 flow [2023-08-26 11:06:32,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 118 transitions, 569 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:06:32,077 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 366 flow [2023-08-26 11:06:32,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2023-08-26 11:06:32,078 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -26 predicate places. [2023-08-26 11:06:32,078 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 366 flow [2023-08-26 11:06:32,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 362.25) internal successors, (1449), 4 states have internal predecessors, (1449), 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) [2023-08-26 11:06:32,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:32,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:32,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 11:06:32,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 11:06:32,284 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:32,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:32,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1156698448, now seen corresponding path program 3 times [2023-08-26 11:06:32,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:32,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58249578] [2023-08-26 11:06:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:32,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:32,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:32,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58249578] [2023-08-26 11:06:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58249578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:32,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:32,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:06:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507328249] [2023-08-26 11:06:32,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:32,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 11:06:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 11:06:32,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 11:06:32,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 790 [2023-08-26 11:06:32,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 358.4) internal successors, (1792), 5 states have internal predecessors, (1792), 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) [2023-08-26 11:06:32,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:32,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 790 [2023-08-26 11:06:32,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:32,858 INFO L124 PetriNetUnfolderBase]: 2463/5294 cut-off events. [2023-08-26 11:06:32,858 INFO L125 PetriNetUnfolderBase]: For 4317/4362 co-relation queries the response was YES. [2023-08-26 11:06:32,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12092 conditions, 5294 events. 2463/5294 cut-off events. For 4317/4362 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 34921 event pairs, 1115 based on Foata normal form. 31/5251 useless extension candidates. Maximal degree in co-relation 12078. Up to 1898 conditions per place. [2023-08-26 11:06:32,881 INFO L140 encePairwiseOnDemand]: 781/790 looper letters, 155 selfloop transitions, 12 changer transitions 9/203 dead transitions. [2023-08-26 11:06:32,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 203 transitions, 1095 flow [2023-08-26 11:06:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:06:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:06:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2278 transitions. [2023-08-26 11:06:32,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805907172995781 [2023-08-26 11:06:32,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2278 transitions. [2023-08-26 11:06:32,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2278 transitions. [2023-08-26 11:06:32,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:32,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2278 transitions. [2023-08-26 11:06:32,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 379.6666666666667) internal successors, (2278), 6 states have internal predecessors, (2278), 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) [2023-08-26 11:06:32,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:32,893 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 790.0) internal successors, (5530), 7 states have internal predecessors, (5530), 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) [2023-08-26 11:06:32,894 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 366 flow. Second operand 6 states and 2278 transitions. [2023-08-26 11:06:32,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 203 transitions, 1095 flow [2023-08-26 11:06:32,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 203 transitions, 1085 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-26 11:06:32,900 INFO L231 Difference]: Finished difference. Result has 109 places, 100 transitions, 468 flow [2023-08-26 11:06:32,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=109, PETRI_TRANSITIONS=100} [2023-08-26 11:06:32,901 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -17 predicate places. [2023-08-26 11:06:32,901 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 100 transitions, 468 flow [2023-08-26 11:06:32,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 358.4) internal successors, (1792), 5 states have internal predecessors, (1792), 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) [2023-08-26 11:06:32,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:32,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:32,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 11:06:32,902 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:32,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:32,902 INFO L85 PathProgramCache]: Analyzing trace with hash 761931902, now seen corresponding path program 4 times [2023-08-26 11:06:32,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:32,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079977956] [2023-08-26 11:06:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079977956] [2023-08-26 11:06:33,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079977956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:33,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:33,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:06:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562412680] [2023-08-26 11:06:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:33,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 11:06:33,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 11:06:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 11:06:33,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 790 [2023-08-26 11:06:33,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 100 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 358.4) internal successors, (1792), 5 states have internal predecessors, (1792), 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) [2023-08-26 11:06:33,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:33,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 790 [2023-08-26 11:06:33,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:33,536 INFO L124 PetriNetUnfolderBase]: 2442/5140 cut-off events. [2023-08-26 11:06:33,536 INFO L125 PetriNetUnfolderBase]: For 6255/6281 co-relation queries the response was YES. [2023-08-26 11:06:33,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12524 conditions, 5140 events. 2442/5140 cut-off events. For 6255/6281 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 33164 event pairs, 1222 based on Foata normal form. 23/5080 useless extension candidates. Maximal degree in co-relation 12505. Up to 2775 conditions per place. [2023-08-26 11:06:33,562 INFO L140 encePairwiseOnDemand]: 783/790 looper letters, 113 selfloop transitions, 15 changer transitions 1/156 dead transitions. [2023-08-26 11:06:33,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 156 transitions, 979 flow [2023-08-26 11:06:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 11:06:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 11:06:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1872 transitions. [2023-08-26 11:06:33,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739240506329114 [2023-08-26 11:06:33,566 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1872 transitions. [2023-08-26 11:06:33,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1872 transitions. [2023-08-26 11:06:33,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:33,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1872 transitions. [2023-08-26 11:06:33,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 374.4) internal successors, (1872), 5 states have internal predecessors, (1872), 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) [2023-08-26 11:06:33,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 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) [2023-08-26 11:06:33,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 790.0) internal successors, (4740), 6 states have internal predecessors, (4740), 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) [2023-08-26 11:06:33,575 INFO L175 Difference]: Start difference. First operand has 109 places, 100 transitions, 468 flow. Second operand 5 states and 1872 transitions. [2023-08-26 11:06:33,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 156 transitions, 979 flow [2023-08-26 11:06:33,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 156 transitions, 965 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 11:06:33,582 INFO L231 Difference]: Finished difference. Result has 115 places, 107 transitions, 595 flow [2023-08-26 11:06:33,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=115, PETRI_TRANSITIONS=107} [2023-08-26 11:06:33,583 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -11 predicate places. [2023-08-26 11:06:33,583 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 107 transitions, 595 flow [2023-08-26 11:06:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 358.4) internal successors, (1792), 5 states have internal predecessors, (1792), 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) [2023-08-26 11:06:33,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:33,584 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:33,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 11:06:33,584 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:33,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash -125874806, now seen corresponding path program 5 times [2023-08-26 11:06:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399926645] [2023-08-26 11:06:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:33,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:33,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399926645] [2023-08-26 11:06:33,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399926645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:06:33,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222693804] [2023-08-26 11:06:33,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 11:06:33,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:06:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:06:33,715 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) [2023-08-26 11:06:33,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 11:06:33,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 11:06:33,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:06:33,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 11:06:33,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:06:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:33,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:06:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:33,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222693804] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:06:33,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:06:33,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2023-08-26 11:06:33,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044102537] [2023-08-26 11:06:33,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:06:33,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 11:06:33,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:33,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 11:06:33,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-26 11:06:33,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 790 [2023-08-26 11:06:33,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 107 transitions, 595 flow. Second operand has 8 states, 8 states have (on average 359.375) internal successors, (2875), 8 states have internal predecessors, (2875), 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) [2023-08-26 11:06:33,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:33,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 790 [2023-08-26 11:06:33,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:34,901 INFO L124 PetriNetUnfolderBase]: 3236/6870 cut-off events. [2023-08-26 11:06:34,902 INFO L125 PetriNetUnfolderBase]: For 9053/9168 co-relation queries the response was YES. [2023-08-26 11:06:34,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16554 conditions, 6870 events. 3236/6870 cut-off events. For 9053/9168 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 48152 event pairs, 771 based on Foata normal form. 86/6813 useless extension candidates. Maximal degree in co-relation 16532. Up to 1282 conditions per place. [2023-08-26 11:06:34,935 INFO L140 encePairwiseOnDemand]: 778/790 looper letters, 196 selfloop transitions, 52 changer transitions 5/280 dead transitions. [2023-08-26 11:06:34,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 280 transitions, 1706 flow [2023-08-26 11:06:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 11:06:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 11:06:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4120 transitions. [2023-08-26 11:06:34,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47410817031070196 [2023-08-26 11:06:34,942 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4120 transitions. [2023-08-26 11:06:34,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4120 transitions. [2023-08-26 11:06:34,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:34,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4120 transitions. [2023-08-26 11:06:34,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 374.54545454545456) internal successors, (4120), 11 states have internal predecessors, (4120), 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) [2023-08-26 11:06:34,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 790.0) internal successors, (9480), 12 states have internal predecessors, (9480), 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) [2023-08-26 11:06:34,956 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 790.0) internal successors, (9480), 12 states have internal predecessors, (9480), 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) [2023-08-26 11:06:34,956 INFO L175 Difference]: Start difference. First operand has 115 places, 107 transitions, 595 flow. Second operand 11 states and 4120 transitions. [2023-08-26 11:06:34,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 280 transitions, 1706 flow [2023-08-26 11:06:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 280 transitions, 1679 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 11:06:34,969 INFO L231 Difference]: Finished difference. Result has 131 places, 136 transitions, 983 flow [2023-08-26 11:06:34,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=983, PETRI_PLACES=131, PETRI_TRANSITIONS=136} [2023-08-26 11:06:34,969 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2023-08-26 11:06:34,969 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 136 transitions, 983 flow [2023-08-26 11:06:34,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 359.375) internal successors, (2875), 8 states have internal predecessors, (2875), 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) [2023-08-26 11:06:34,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:34,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:34,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 11:06:35,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 11:06:35,175 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:35,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1629797836, now seen corresponding path program 6 times [2023-08-26 11:06:35,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:35,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957027654] [2023-08-26 11:06:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:35,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:35,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:35,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957027654] [2023-08-26 11:06:35,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957027654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:35,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:35,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 11:06:35,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664385045] [2023-08-26 11:06:35,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:35,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 11:06:35,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 11:06:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 11:06:35,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 790 [2023-08-26 11:06:35,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 136 transitions, 983 flow. Second operand has 4 states, 4 states have (on average 362.25) internal successors, (1449), 4 states have internal predecessors, (1449), 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) [2023-08-26 11:06:35,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:35,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 790 [2023-08-26 11:06:35,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:35,921 INFO L124 PetriNetUnfolderBase]: 3141/6589 cut-off events. [2023-08-26 11:06:35,921 INFO L125 PetriNetUnfolderBase]: For 14997/15166 co-relation queries the response was YES. [2023-08-26 11:06:35,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17751 conditions, 6589 events. 3141/6589 cut-off events. For 14997/15166 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 45711 event pairs, 1600 based on Foata normal form. 146/6560 useless extension candidates. Maximal degree in co-relation 17722. Up to 3331 conditions per place. [2023-08-26 11:06:35,958 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 127 selfloop transitions, 13 changer transitions 2/173 dead transitions. [2023-08-26 11:06:35,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 173 transitions, 1451 flow [2023-08-26 11:06:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 11:06:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 11:06:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1510 transitions. [2023-08-26 11:06:35,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778481012658228 [2023-08-26 11:06:35,961 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1510 transitions. [2023-08-26 11:06:35,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1510 transitions. [2023-08-26 11:06:35,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:35,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1510 transitions. [2023-08-26 11:06:35,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 377.5) internal successors, (1510), 4 states have internal predecessors, (1510), 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) [2023-08-26 11:06:35,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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) [2023-08-26 11:06:35,966 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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) [2023-08-26 11:06:35,966 INFO L175 Difference]: Start difference. First operand has 131 places, 136 transitions, 983 flow. Second operand 4 states and 1510 transitions. [2023-08-26 11:06:35,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 173 transitions, 1451 flow [2023-08-26 11:06:35,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 173 transitions, 1404 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-26 11:06:35,987 INFO L231 Difference]: Finished difference. Result has 133 places, 137 transitions, 1000 flow [2023-08-26 11:06:35,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1000, PETRI_PLACES=133, PETRI_TRANSITIONS=137} [2023-08-26 11:06:35,988 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 7 predicate places. [2023-08-26 11:06:35,988 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 137 transitions, 1000 flow [2023-08-26 11:06:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 362.25) internal successors, (1449), 4 states have internal predecessors, (1449), 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) [2023-08-26 11:06:35,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:35,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:35,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 11:06:35,989 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:35,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash -861567640, now seen corresponding path program 7 times [2023-08-26 11:06:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:35,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405955022] [2023-08-26 11:06:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:36,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:36,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405955022] [2023-08-26 11:06:36,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405955022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:06:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104192802] [2023-08-26 11:06:36,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 11:06:36,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:06:36,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:06:36,096 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) [2023-08-26 11:06:36,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 11:06:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:36,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 11:06:36,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:06:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:36,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:06:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104192802] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:06:36,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:06:36,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-08-26 11:06:36,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825861435] [2023-08-26 11:06:36,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:06:36,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 11:06:36,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 11:06:36,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 11:06:36,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 790 [2023-08-26 11:06:36,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 137 transitions, 1000 flow. Second operand has 9 states, 9 states have (on average 358.6666666666667) internal successors, (3228), 9 states have internal predecessors, (3228), 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) [2023-08-26 11:06:36,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:36,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 790 [2023-08-26 11:06:36,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:37,257 INFO L124 PetriNetUnfolderBase]: 3548/7510 cut-off events. [2023-08-26 11:06:37,257 INFO L125 PetriNetUnfolderBase]: For 17731/17781 co-relation queries the response was YES. [2023-08-26 11:06:37,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20432 conditions, 7510 events. 3548/7510 cut-off events. For 17731/17781 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 51925 event pairs, 1262 based on Foata normal form. 56/7380 useless extension candidates. Maximal degree in co-relation 20401. Up to 2249 conditions per place. [2023-08-26 11:06:37,296 INFO L140 encePairwiseOnDemand]: 778/790 looper letters, 156 selfloop transitions, 48 changer transitions 6/237 dead transitions. [2023-08-26 11:06:37,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 237 transitions, 1866 flow [2023-08-26 11:06:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 11:06:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 11:06:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3335 transitions. [2023-08-26 11:06:37,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46905766526019693 [2023-08-26 11:06:37,301 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3335 transitions. [2023-08-26 11:06:37,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3335 transitions. [2023-08-26 11:06:37,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:37,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3335 transitions. [2023-08-26 11:06:37,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 370.55555555555554) internal successors, (3335), 9 states have internal predecessors, (3335), 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) [2023-08-26 11:06:37,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 790.0) internal successors, (7900), 10 states have internal predecessors, (7900), 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) [2023-08-26 11:06:37,310 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 790.0) internal successors, (7900), 10 states have internal predecessors, (7900), 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) [2023-08-26 11:06:37,310 INFO L175 Difference]: Start difference. First operand has 133 places, 137 transitions, 1000 flow. Second operand 9 states and 3335 transitions. [2023-08-26 11:06:37,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 237 transitions, 1866 flow [2023-08-26 11:06:37,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 237 transitions, 1852 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 11:06:37,338 INFO L231 Difference]: Finished difference. Result has 144 places, 146 transitions, 1225 flow [2023-08-26 11:06:37,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1225, PETRI_PLACES=144, PETRI_TRANSITIONS=146} [2023-08-26 11:06:37,338 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 18 predicate places. [2023-08-26 11:06:37,339 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 1225 flow [2023-08-26 11:06:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 358.6666666666667) internal successors, (3228), 9 states have internal predecessors, (3228), 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) [2023-08-26 11:06:37,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:37,339 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:37,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 11:06:37,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:06:37,544 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:37,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1034710905, now seen corresponding path program 1 times [2023-08-26 11:06:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:37,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77107594] [2023-08-26 11:06:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:37,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77107594] [2023-08-26 11:06:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77107594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:37,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:06:37,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 11:06:37,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007792426] [2023-08-26 11:06:37,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:37,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 11:06:37,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:37,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 11:06:37,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 11:06:37,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 790 [2023-08-26 11:06:37,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 1225 flow. Second operand has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-08-26 11:06:37,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:37,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 790 [2023-08-26 11:06:37,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:38,371 INFO L124 PetriNetUnfolderBase]: 4142/8652 cut-off events. [2023-08-26 11:06:38,371 INFO L125 PetriNetUnfolderBase]: For 25915/25987 co-relation queries the response was YES. [2023-08-26 11:06:38,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24600 conditions, 8652 events. 4142/8652 cut-off events. For 25915/25987 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 60382 event pairs, 1618 based on Foata normal form. 110/8554 useless extension candidates. Maximal degree in co-relation 24566. Up to 5282 conditions per place. [2023-08-26 11:06:38,421 INFO L140 encePairwiseOnDemand]: 785/790 looper letters, 148 selfloop transitions, 12 changer transitions 3/194 dead transitions. [2023-08-26 11:06:38,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 194 transitions, 1806 flow [2023-08-26 11:06:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 11:06:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 11:06:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1545 transitions. [2023-08-26 11:06:38,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4889240506329114 [2023-08-26 11:06:38,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1545 transitions. [2023-08-26 11:06:38,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1545 transitions. [2023-08-26 11:06:38,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:38,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1545 transitions. [2023-08-26 11:06:38,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 386.25) internal successors, (1545), 4 states have internal predecessors, (1545), 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) [2023-08-26 11:06:38,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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) [2023-08-26 11:06:38,427 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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) [2023-08-26 11:06:38,427 INFO L175 Difference]: Start difference. First operand has 144 places, 146 transitions, 1225 flow. Second operand 4 states and 1545 transitions. [2023-08-26 11:06:38,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 194 transitions, 1806 flow [2023-08-26 11:06:38,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 194 transitions, 1749 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-26 11:06:38,467 INFO L231 Difference]: Finished difference. Result has 144 places, 149 transitions, 1270 flow [2023-08-26 11:06:38,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1270, PETRI_PLACES=144, PETRI_TRANSITIONS=149} [2023-08-26 11:06:38,468 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 18 predicate places. [2023-08-26 11:06:38,468 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 149 transitions, 1270 flow [2023-08-26 11:06:38,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-08-26 11:06:38,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:38,468 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:38,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 11:06:38,469 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:38,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2070789388, now seen corresponding path program 1 times [2023-08-26 11:06:38,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:38,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191836069] [2023-08-26 11:06:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:38,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:38,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191836069] [2023-08-26 11:06:38,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191836069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:06:38,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923627145] [2023-08-26 11:06:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:38,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:06:38,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:06:38,629 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) [2023-08-26 11:06:38,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 11:06:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:38,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 11:06:38,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:06:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:38,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 11:06:38,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923627145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:06:38,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 11:06:38,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-08-26 11:06:38,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908792957] [2023-08-26 11:06:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:06:38,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:06:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:06:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 11:06:38,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 790 [2023-08-26 11:06:38,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 149 transitions, 1270 flow. Second operand has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 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) [2023-08-26 11:06:38,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:38,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 790 [2023-08-26 11:06:38,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:39,475 INFO L124 PetriNetUnfolderBase]: 4105/8651 cut-off events. [2023-08-26 11:06:39,475 INFO L125 PetriNetUnfolderBase]: For 22868/22999 co-relation queries the response was YES. [2023-08-26 11:06:39,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24118 conditions, 8651 events. 4105/8651 cut-off events. For 22868/22999 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 60259 event pairs, 2856 based on Foata normal form. 225/8660 useless extension candidates. Maximal degree in co-relation 24083. Up to 6411 conditions per place. [2023-08-26 11:06:39,523 INFO L140 encePairwiseOnDemand]: 786/790 looper letters, 103 selfloop transitions, 0 changer transitions 28/167 dead transitions. [2023-08-26 11:06:39,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 167 transitions, 1668 flow [2023-08-26 11:06:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:06:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:06:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1156 transitions. [2023-08-26 11:06:39,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4877637130801688 [2023-08-26 11:06:39,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1156 transitions. [2023-08-26 11:06:39,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1156 transitions. [2023-08-26 11:06:39,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:06:39,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1156 transitions. [2023-08-26 11:06:39,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 385.3333333333333) internal successors, (1156), 3 states have internal predecessors, (1156), 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) [2023-08-26 11:06:39,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:39,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:06:39,528 INFO L175 Difference]: Start difference. First operand has 144 places, 149 transitions, 1270 flow. Second operand 3 states and 1156 transitions. [2023-08-26 11:06:39,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 167 transitions, 1668 flow [2023-08-26 11:06:39,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 167 transitions, 1621 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 11:06:39,564 INFO L231 Difference]: Finished difference. Result has 142 places, 139 transitions, 1122 flow [2023-08-26 11:06:39,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1122, PETRI_PLACES=142, PETRI_TRANSITIONS=139} [2023-08-26 11:06:39,564 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 16 predicate places. [2023-08-26 11:06:39,564 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 139 transitions, 1122 flow [2023-08-26 11:06:39,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 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) [2023-08-26 11:06:39,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:06:39,565 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:06:39,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 11:06:39,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:06:39,772 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:06:39,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:06:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1375847240, now seen corresponding path program 1 times [2023-08-26 11:06:39,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:06:39,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835409431] [2023-08-26 11:06:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:39,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:06:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:06:39,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:06:39,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835409431] [2023-08-26 11:06:39,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835409431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:06:39,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856514975] [2023-08-26 11:06:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:06:39,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:06:39,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:06:39,940 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) [2023-08-26 11:06:39,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 11:06:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:06:40,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-26 11:06:40,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:06:40,556 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 11:06:40,558 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 11:06:40,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2023-08-26 11:06:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:06:40,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:06:41,001 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 11:06:41,002 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-08-26 11:06:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:06:41,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856514975] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:06:41,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:06:41,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 12] total 28 [2023-08-26 11:06:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624364431] [2023-08-26 11:06:41,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:06:41,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 11:06:41,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:06:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 11:06:41,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2023-08-26 11:06:41,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 790 [2023-08-26 11:06:41,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 139 transitions, 1122 flow. Second operand has 28 states, 28 states have (on average 266.2857142857143) internal successors, (7456), 28 states have internal predecessors, (7456), 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) [2023-08-26 11:06:41,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:06:41,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 790 [2023-08-26 11:06:41,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:06:44,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:01,381 INFO L124 PetriNetUnfolderBase]: 28535/48655 cut-off events. [2023-08-26 11:07:01,382 INFO L125 PetriNetUnfolderBase]: For 89199/89549 co-relation queries the response was YES. [2023-08-26 11:07:01,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131701 conditions, 48655 events. 28535/48655 cut-off events. For 89199/89549 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 352547 event pairs, 3931 based on Foata normal form. 996/49623 useless extension candidates. Maximal degree in co-relation 131667. Up to 9105 conditions per place. [2023-08-26 11:07:01,811 INFO L140 encePairwiseOnDemand]: 768/790 looper letters, 966 selfloop transitions, 182 changer transitions 0/1163 dead transitions. [2023-08-26 11:07:01,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 1163 transitions, 7754 flow [2023-08-26 11:07:01,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-26 11:07:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-26 11:07:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 11945 transitions. [2023-08-26 11:07:01,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3600060277275467 [2023-08-26 11:07:01,820 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 11945 transitions. [2023-08-26 11:07:01,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 11945 transitions. [2023-08-26 11:07:01,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:07:01,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 11945 transitions. [2023-08-26 11:07:01,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 284.4047619047619) internal successors, (11945), 42 states have internal predecessors, (11945), 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) [2023-08-26 11:07:01,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 790.0) internal successors, (33970), 43 states have internal predecessors, (33970), 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) [2023-08-26 11:07:01,852 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 790.0) internal successors, (33970), 43 states have internal predecessors, (33970), 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) [2023-08-26 11:07:01,852 INFO L175 Difference]: Start difference. First operand has 142 places, 139 transitions, 1122 flow. Second operand 42 states and 11945 transitions. [2023-08-26 11:07:01,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 1163 transitions, 7754 flow [2023-08-26 11:07:02,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1163 transitions, 7661 flow, removed 35 selfloop flow, removed 2 redundant places. [2023-08-26 11:07:02,112 INFO L231 Difference]: Finished difference. Result has 208 places, 291 transitions, 3377 flow [2023-08-26 11:07:02,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=3377, PETRI_PLACES=208, PETRI_TRANSITIONS=291} [2023-08-26 11:07:02,113 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 82 predicate places. [2023-08-26 11:07:02,113 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 291 transitions, 3377 flow [2023-08-26 11:07:02,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 266.2857142857143) internal successors, (7456), 28 states have internal predecessors, (7456), 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) [2023-08-26 11:07:02,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:07:02,114 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:07:02,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 11:07:02,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-26 11:07:02,314 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:07:02,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:07:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1800982939, now seen corresponding path program 1 times [2023-08-26 11:07:02,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:07:02,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665701196] [2023-08-26 11:07:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:07:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:07:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:07:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:07:02,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:07:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665701196] [2023-08-26 11:07:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665701196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:07:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363342544] [2023-08-26 11:07:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:07:02,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:07:02,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:07:02,496 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 11:07:02,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 11:07:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:07:02,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 11:07:02,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:07:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 11:07:02,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 11:07:02,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363342544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:07:02,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 11:07:02,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-26 11:07:02,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919852839] [2023-08-26 11:07:02,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:07:02,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:07:02,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:07:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:07:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 11:07:02,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 790 [2023-08-26 11:07:02,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 291 transitions, 3377 flow. Second operand has 3 states, 3 states have (on average 387.3333333333333) internal successors, (1162), 3 states have internal predecessors, (1162), 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) [2023-08-26 11:07:02,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:07:02,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 790 [2023-08-26 11:07:02,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:07:06,865 INFO L124 PetriNetUnfolderBase]: 11966/25629 cut-off events. [2023-08-26 11:07:06,865 INFO L125 PetriNetUnfolderBase]: For 124246/124625 co-relation queries the response was YES. [2023-08-26 11:07:06,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85696 conditions, 25629 events. 11966/25629 cut-off events. For 124246/124625 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 218262 event pairs, 8618 based on Foata normal form. 883/26271 useless extension candidates. Maximal degree in co-relation 85635. Up to 18615 conditions per place. [2023-08-26 11:07:07,041 INFO L140 encePairwiseOnDemand]: 788/790 looper letters, 247 selfloop transitions, 0 changer transitions 78/366 dead transitions. [2023-08-26 11:07:07,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 366 transitions, 4710 flow [2023-08-26 11:07:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:07:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:07:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1187 transitions. [2023-08-26 11:07:07,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50084388185654 [2023-08-26 11:07:07,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1187 transitions. [2023-08-26 11:07:07,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1187 transitions. [2023-08-26 11:07:07,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:07:07,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1187 transitions. [2023-08-26 11:07:07,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 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) [2023-08-26 11:07:07,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:07:07,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 790.0) internal successors, (3160), 4 states have internal predecessors, (3160), 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) [2023-08-26 11:07:07,047 INFO L175 Difference]: Start difference. First operand has 208 places, 291 transitions, 3377 flow. Second operand 3 states and 1187 transitions. [2023-08-26 11:07:07,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 366 transitions, 4710 flow [2023-08-26 11:07:07,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 366 transitions, 4539 flow, removed 56 selfloop flow, removed 3 redundant places. [2023-08-26 11:07:07,329 INFO L231 Difference]: Finished difference. Result has 208 places, 288 transitions, 3186 flow [2023-08-26 11:07:07,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3186, PETRI_PLACES=208, PETRI_TRANSITIONS=288} [2023-08-26 11:07:07,330 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 82 predicate places. [2023-08-26 11:07:07,330 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 288 transitions, 3186 flow [2023-08-26 11:07:07,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 387.3333333333333) internal successors, (1162), 3 states have internal predecessors, (1162), 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) [2023-08-26 11:07:07,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:07:07,330 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:07:07,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 11:07:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:07:07,537 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:07:07,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:07:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1843958315, now seen corresponding path program 2 times [2023-08-26 11:07:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:07:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140738898] [2023-08-26 11:07:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:07:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:07:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:07:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:07:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:07:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140738898] [2023-08-26 11:07:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140738898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:07:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334496460] [2023-08-26 11:07:07,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 11:07:07,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:07:07,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:07:07,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 11:07:07,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 11:07:08,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 11:07:08,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:07:08,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-26 11:07:08,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:07:09,364 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 11:07:09,371 INFO L322 Elim1Store]: treesize reduction 15, result has 31.8 percent of original size [2023-08-26 11:07:09,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2023-08-26 11:07:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:07:09,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:07:10,222 INFO L322 Elim1Store]: treesize reduction 5, result has 91.8 percent of original size [2023-08-26 11:07:10,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 73 [2023-08-26 11:07:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:07:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334496460] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:07:10,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:07:10,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16, 16] total 38 [2023-08-26 11:07:10,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496571926] [2023-08-26 11:07:10,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:07:10,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-26 11:07:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:07:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-26 11:07:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2023-08-26 11:07:10,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 790 [2023-08-26 11:07:10,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 288 transitions, 3186 flow. Second operand has 38 states, 38 states have (on average 264.6842105263158) internal successors, (10058), 38 states have internal predecessors, (10058), 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) [2023-08-26 11:07:10,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:07:10,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 790 [2023-08-26 11:07:10,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:07:18,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:21,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:24,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:28,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:32,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:35,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:38,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:40,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:42,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:45,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:49,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:53,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:07:57,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:01,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:03,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:07,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:15,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:17,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:19,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:21,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:23,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:25,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:27,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:29,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:33,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:35,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:37,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:39,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:44,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:46,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:08:52,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:02,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:04,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:12,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:15,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:17,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:19,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:22,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:24,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:26,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:28,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:30,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:33,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:35,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:37,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:39,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:42,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:44,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:47,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:51,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:53,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:55,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:09:59,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:01,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:04,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:06,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:07,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:09,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:11,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:13,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:14,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:16,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:18,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:23,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 11:10:34,469 INFO L124 PetriNetUnfolderBase]: 74509/128149 cut-off events. [2023-08-26 11:10:34,469 INFO L125 PetriNetUnfolderBase]: For 519541/520155 co-relation queries the response was YES. [2023-08-26 11:10:35,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403270 conditions, 128149 events. 74509/128149 cut-off events. For 519541/520155 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 1035183 event pairs, 10507 based on Foata normal form. 1392/129516 useless extension candidates. Maximal degree in co-relation 403207. Up to 24507 conditions per place. [2023-08-26 11:10:36,165 INFO L140 encePairwiseOnDemand]: 766/790 looper letters, 3161 selfloop transitions, 921 changer transitions 63/4160 dead transitions. [2023-08-26 11:10:36,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 4160 transitions, 31937 flow [2023-08-26 11:10:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2023-08-26 11:10:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2023-08-26 11:10:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 64295 transitions. [2023-08-26 11:10:36,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3478037433733636 [2023-08-26 11:10:36,205 INFO L72 ComplementDD]: Start complementDD. Operand 234 states and 64295 transitions. [2023-08-26 11:10:36,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 234 states and 64295 transitions. [2023-08-26 11:10:36,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:10:36,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 234 states and 64295 transitions. [2023-08-26 11:10:36,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 235 states, 234 states have (on average 274.7649572649573) internal successors, (64295), 234 states have internal predecessors, (64295), 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) [2023-08-26 11:10:36,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 235 states, 235 states have (on average 790.0) internal successors, (185650), 235 states have internal predecessors, (185650), 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) [2023-08-26 11:10:36,401 INFO L81 ComplementDD]: Finished complementDD. Result has 235 states, 235 states have (on average 790.0) internal successors, (185650), 235 states have internal predecessors, (185650), 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) [2023-08-26 11:10:36,401 INFO L175 Difference]: Start difference. First operand has 208 places, 288 transitions, 3186 flow. Second operand 234 states and 64295 transitions. [2023-08-26 11:10:36,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 4160 transitions, 31937 flow [2023-08-26 11:10:38,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 4160 transitions, 31476 flow, removed 228 selfloop flow, removed 2 redundant places. [2023-08-26 11:10:38,946 INFO L231 Difference]: Finished difference. Result has 554 places, 1181 transitions, 15778 flow [2023-08-26 11:10:38,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=3101, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=234, PETRI_FLOW=15778, PETRI_PLACES=554, PETRI_TRANSITIONS=1181} [2023-08-26 11:10:38,947 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 428 predicate places. [2023-08-26 11:10:38,947 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 1181 transitions, 15778 flow [2023-08-26 11:10:38,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 264.6842105263158) internal successors, (10058), 38 states have internal predecessors, (10058), 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) [2023-08-26 11:10:38,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:10:38,948 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:10:38,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 11:10:39,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:10:39,152 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:10:39,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:10:39,153 INFO L85 PathProgramCache]: Analyzing trace with hash -646393302, now seen corresponding path program 3 times [2023-08-26 11:10:39,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:10:39,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134603078] [2023-08-26 11:10:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:10:39,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:10:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:10:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:10:39,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:10:39,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134603078] [2023-08-26 11:10:39,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134603078] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:10:39,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691251702] [2023-08-26 11:10:39,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 11:10:39,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:10:39,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:10:39,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 11:10:39,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 11:10:39,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 11:10:39,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:10:39,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 11:10:39,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:10:40,235 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 11:10:40,236 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 11:10:40,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2023-08-26 11:10:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-26 11:10:40,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:10:40,543 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 11:10:40,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-08-26 11:10:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-26 11:10:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691251702] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:10:40,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:10:40,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 31 [2023-08-26 11:10:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293910820] [2023-08-26 11:10:40,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:10:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 11:10:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:10:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 11:10:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2023-08-26 11:10:40,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 790 [2023-08-26 11:10:40,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 1181 transitions, 15778 flow. Second operand has 31 states, 31 states have (on average 265.0) internal successors, (8215), 31 states have internal predecessors, (8215), 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) [2023-08-26 11:10:40,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:10:40,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 790 [2023-08-26 11:10:40,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:12:12,443 INFO L124 PetriNetUnfolderBase]: 138330/240472 cut-off events. [2023-08-26 11:12:12,444 INFO L125 PetriNetUnfolderBase]: For 4169242/4171266 co-relation queries the response was YES. [2023-08-26 11:12:21,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969424 conditions, 240472 events. 138330/240472 cut-off events. For 4169242/4171266 co-relation queries the response was YES. Maximal size of possible extension queue 1945. Compared 2169383 event pairs, 9942 based on Foata normal form. 3716/244081 useless extension candidates. Maximal degree in co-relation 969246. Up to 45369 conditions per place. [2023-08-26 11:12:22,135 INFO L140 encePairwiseOnDemand]: 766/790 looper letters, 2346 selfloop transitions, 359 changer transitions 3720/6440 dead transitions. [2023-08-26 11:12:22,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 6440 transitions, 79172 flow [2023-08-26 11:12:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-08-26 11:12:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2023-08-26 11:12:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 51673 transitions. [2023-08-26 11:12:22,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3535614095107766 [2023-08-26 11:12:22,223 INFO L72 ComplementDD]: Start complementDD. Operand 185 states and 51673 transitions. [2023-08-26 11:12:22,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 51673 transitions. [2023-08-26 11:12:22,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:12:22,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 185 states and 51673 transitions. [2023-08-26 11:12:22,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 186 states, 185 states have (on average 279.3135135135135) internal successors, (51673), 185 states have internal predecessors, (51673), 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) [2023-08-26 11:12:22,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 186 states, 186 states have (on average 790.0) internal successors, (146940), 186 states have internal predecessors, (146940), 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) [2023-08-26 11:12:22,477 INFO L81 ComplementDD]: Finished complementDD. Result has 186 states, 186 states have (on average 790.0) internal successors, (146940), 186 states have internal predecessors, (146940), 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) [2023-08-26 11:12:22,477 INFO L175 Difference]: Start difference. First operand has 554 places, 1181 transitions, 15778 flow. Second operand 185 states and 51673 transitions. [2023-08-26 11:12:22,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 6440 transitions, 79172 flow [2023-08-26 11:13:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 6440 transitions, 72887 flow, removed 3002 selfloop flow, removed 15 redundant places. [2023-08-26 11:13:11,370 INFO L231 Difference]: Finished difference. Result has 880 places, 644 transitions, 9851 flow [2023-08-26 11:13:11,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=790, PETRI_DIFFERENCE_MINUEND_FLOW=12893, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=917, PETRI_DIFFERENCE_SUBTRAHEND_STATES=185, PETRI_FLOW=9851, PETRI_PLACES=880, PETRI_TRANSITIONS=644} [2023-08-26 11:13:11,372 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 754 predicate places. [2023-08-26 11:13:11,372 INFO L495 AbstractCegarLoop]: Abstraction has has 880 places, 644 transitions, 9851 flow [2023-08-26 11:13:11,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 265.0) internal successors, (8215), 31 states have internal predecessors, (8215), 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) [2023-08-26 11:13:11,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:13:11,374 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:13:11,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 11:13:11,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-26 11:13:11,579 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2023-08-26 11:13:11,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:13:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash -350159611, now seen corresponding path program 4 times [2023-08-26 11:13:11,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:13:11,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715308693] [2023-08-26 11:13:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:13:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:13:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:13:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 26 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 11:13:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:13:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715308693] [2023-08-26 11:13:13,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715308693] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:13:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769755633] [2023-08-26 11:13:13,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 11:13:13,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:13:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:13:13,261 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 11:13:13,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 11:13:23,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 11:13:23,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:13:23,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-26 11:13:23,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:13:24,490 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 11:13:24,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2023-08-26 11:13:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 11:13:24,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:13:26,406 INFO L322 Elim1Store]: treesize reduction 5, result has 91.8 percent of original size [2023-08-26 11:13:26,406 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 78 [2023-08-26 11:13:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 11:13:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769755633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:13:26,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:13:26,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 22] total 56 [2023-08-26 11:13:26,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522666124] [2023-08-26 11:13:26,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:13:26,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-26 11:13:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:13:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-26 11:13:26,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=2805, Unknown=0, NotChecked=0, Total=3306 [2023-08-26 11:13:26,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 790 [2023-08-26 11:13:26,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 880 places, 644 transitions, 9851 flow. Second operand has 58 states, 58 states have (on average 266.4655172413793) internal successors, (15455), 58 states have internal predecessors, (15455), 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) [2023-08-26 11:13:26,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:13:26,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 790 [2023-08-26 11:13:26,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand