/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/chl-word-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 08:58:58,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 08:58:58,589 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 08:58:58,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 08:58:58,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 08:58:58,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 08:58:58,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 08:58:58,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 08:58:58,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 08:58:58,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 08:58:58,629 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 08:58:58,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 08:58:58,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 08:58:58,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 08:58:58,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 08:58:58,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 08:58:58,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 08:58:58,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 08:58:58,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 08:58:58,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 08:58:58,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 08:58:58,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 08:58:58,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 08:58:58,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 08:58:58,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 08:58:58,633 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 08:58:58,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 08:58:58,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 08:58:58,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 08:58:58,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 08:58:58,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 08:58:58,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 08:58:58,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 08:58:58,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 08:58:58,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 08:58:58,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 08:58:58,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 08:58:58,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 08:58:58,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 08:58:58,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 08:58:58,961 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 08:58:58,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-08-26 08:59:00,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 08:59:00,296 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 08:59:00,296 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-08-26 08:59:00,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/068537bc4/7fa45743ff2f49fdb389fecc8f0ebbbe/FLAG45e3ed0f3 [2023-08-26 08:59:00,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/068537bc4/7fa45743ff2f49fdb389fecc8f0ebbbe [2023-08-26 08:59:00,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 08:59:00,323 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 08:59:00,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 08:59:00,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 08:59:00,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 08:59:00,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c7399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00, skipping insertion in model container [2023-08-26 08:59:00,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,347 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 08:59:00,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 08:59:00,566 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 08:59:00,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 08:59:00,634 INFO L206 MainTranslator]: Completed translation [2023-08-26 08:59:00,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00 WrapperNode [2023-08-26 08:59:00,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 08:59:00,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 08:59:00,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 08:59:00,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 08:59:00,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,693 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 214 [2023-08-26 08:59:00,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 08:59:00,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 08:59:00,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 08:59:00,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 08:59:00,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 08:59:00,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 08:59:00,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 08:59:00,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 08:59:00,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (1/1) ... [2023-08-26 08:59:00,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 08:59:00,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:00,793 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 08:59:00,801 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 08:59:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 08:59:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 08:59:00,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 08:59:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 08:59:00,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 08:59:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 08:59:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 08:59:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 08:59:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 08:59:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 08:59:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 08:59:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 08:59:00,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 08:59:00,825 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 08:59:00,934 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 08:59:00,936 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 08:59:01,612 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 08:59:01,628 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 08:59:01,629 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 08:59:01,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:59:01 BoogieIcfgContainer [2023-08-26 08:59:01,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 08:59:01,635 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 08:59:01,635 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 08:59:01,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 08:59:01,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:59:00" (1/3) ... [2023-08-26 08:59:01,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d04aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:59:01, skipping insertion in model container [2023-08-26 08:59:01,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:59:00" (2/3) ... [2023-08-26 08:59:01,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d04aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:59:01, skipping insertion in model container [2023-08-26 08:59:01,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:59:01" (3/3) ... [2023-08-26 08:59:01,641 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2023-08-26 08:59:01,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 08:59:01,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-08-26 08:59:01,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 08:59:01,767 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 08:59:01,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 458 places, 477 transitions, 970 flow [2023-08-26 08:59:01,935 INFO L124 PetriNetUnfolderBase]: 26/475 cut-off events. [2023-08-26 08:59:01,935 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 08:59:01,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 475 events. 26/475 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1064 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 282. Up to 3 conditions per place. [2023-08-26 08:59:01,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 458 places, 477 transitions, 970 flow [2023-08-26 08:59:01,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 466 transitions, 944 flow [2023-08-26 08:59:01,957 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 08:59:01,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 466 transitions, 944 flow [2023-08-26 08:59:01,967 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 466 transitions, 944 flow [2023-08-26 08:59:01,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 466 transitions, 944 flow [2023-08-26 08:59:02,090 INFO L124 PetriNetUnfolderBase]: 26/466 cut-off events. [2023-08-26 08:59:02,091 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 08:59:02,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 466 events. 26/466 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1064 event pairs, 0 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 282. Up to 3 conditions per place. [2023-08-26 08:59:02,111 INFO L119 LiptonReduction]: Number of co-enabled transitions 32480 [2023-08-26 08:59:11,420 INFO L134 LiptonReduction]: Checked pairs total: 236209 [2023-08-26 08:59:11,420 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-08-26 08:59:11,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 08:59:11,438 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;@1652636e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 08:59:11,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 97 error locations. [2023-08-26 08:59:11,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 08:59:11,439 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 08:59:11,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 08:59:11,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:11,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 08:59:11,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:11,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1716, now seen corresponding path program 1 times [2023-08-26 08:59:11,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:11,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879462910] [2023-08-26 08:59:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:11,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:11,531 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 08:59:11,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:11,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879462910] [2023-08-26 08:59:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879462910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 08:59:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795193162] [2023-08-26 08:59:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:11,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 08:59:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 08:59:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 08:59:11,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 888 [2023-08-26 08:59:11,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 181 transitions, 374 flow. Second operand has 2 states, 2 states have (on average 461.5) internal successors, (923), 2 states have internal predecessors, (923), 0 states have call successors, (0), 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 08:59:11,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:11,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 888 [2023-08-26 08:59:11,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:11,989 INFO L124 PetriNetUnfolderBase]: 875/3218 cut-off events. [2023-08-26 08:59:11,989 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-08-26 08:59:11,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4585 conditions, 3218 events. 875/3218 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 26936 event pairs, 573 based on Foata normal form. 225/2740 useless extension candidates. Maximal degree in co-relation 4278. Up to 1321 conditions per place. [2023-08-26 08:59:12,010 INFO L140 encePairwiseOnDemand]: 864/888 looper letters, 49 selfloop transitions, 0 changer transitions 0/157 dead transitions. [2023-08-26 08:59:12,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 157 transitions, 424 flow [2023-08-26 08:59:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 08:59:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 08:59:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 995 transitions. [2023-08-26 08:59:12,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602477477477478 [2023-08-26 08:59:12,031 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 995 transitions. [2023-08-26 08:59:12,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 995 transitions. [2023-08-26 08:59:12,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:12,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 995 transitions. [2023-08-26 08:59:12,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 497.5) internal successors, (995), 2 states have internal predecessors, (995), 0 states have call successors, (0), 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 08:59:12,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 888.0) internal successors, (2664), 3 states have internal predecessors, (2664), 0 states have call successors, (0), 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 08:59:12,051 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 888.0) internal successors, (2664), 3 states have internal predecessors, (2664), 0 states have call successors, (0), 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 08:59:12,053 INFO L175 Difference]: Start difference. First operand has 174 places, 181 transitions, 374 flow. Second operand 2 states and 995 transitions. [2023-08-26 08:59:12,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 157 transitions, 424 flow [2023-08-26 08:59:12,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 157 transitions, 416 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 08:59:12,064 INFO L231 Difference]: Finished difference. Result has 149 places, 157 transitions, 318 flow [2023-08-26 08:59:12,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=318, PETRI_PLACES=149, PETRI_TRANSITIONS=157} [2023-08-26 08:59:12,068 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -25 predicate places. [2023-08-26 08:59:12,069 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 157 transitions, 318 flow [2023-08-26 08:59:12,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 461.5) internal successors, (923), 2 states have internal predecessors, (923), 0 states have call successors, (0), 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 08:59:12,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:12,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 08:59:12,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 08:59:12,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:12,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:12,078 INFO L85 PathProgramCache]: Analyzing trace with hash -333080996, now seen corresponding path program 1 times [2023-08-26 08:59:12,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:12,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187453632] [2023-08-26 08:59:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:12,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:12,222 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 08:59:12,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:12,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187453632] [2023-08-26 08:59:12,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187453632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:12,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:12,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:12,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179641180] [2023-08-26 08:59:12,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:12,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:12,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:12,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:12,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:12,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 888 [2023-08-26 08:59:12,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 157 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 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 08:59:12,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:12,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 888 [2023-08-26 08:59:12,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:12,579 INFO L124 PetriNetUnfolderBase]: 1159/3956 cut-off events. [2023-08-26 08:59:12,579 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-26 08:59:12,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5745 conditions, 3956 events. 1159/3956 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 33177 event pairs, 449 based on Foata normal form. 0/3168 useless extension candidates. Maximal degree in co-relation 5742. Up to 1758 conditions per place. [2023-08-26 08:59:12,606 INFO L140 encePairwiseOnDemand]: 882/888 looper letters, 58 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2023-08-26 08:59:12,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 159 transitions, 443 flow [2023-08-26 08:59:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-08-26 08:59:12,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262762762762763 [2023-08-26 08:59:12,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-08-26 08:59:12,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-08-26 08:59:12,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:12,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-08-26 08:59:12,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 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 08:59:12,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:12,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:12,620 INFO L175 Difference]: Start difference. First operand has 149 places, 157 transitions, 318 flow. Second operand 3 states and 1402 transitions. [2023-08-26 08:59:12,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 159 transitions, 443 flow [2023-08-26 08:59:12,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 159 transitions, 443 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:12,623 INFO L231 Difference]: Finished difference. Result has 148 places, 155 transitions, 324 flow [2023-08-26 08:59:12,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=148, PETRI_TRANSITIONS=155} [2023-08-26 08:59:12,624 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -26 predicate places. [2023-08-26 08:59:12,624 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 155 transitions, 324 flow [2023-08-26 08:59:12,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 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 08:59:12,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:12,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:12,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 08:59:12,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:12,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2031745086, now seen corresponding path program 1 times [2023-08-26 08:59:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:12,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833593486] [2023-08-26 08:59:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:12,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:12,680 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 08:59:12,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:12,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833593486] [2023-08-26 08:59:12,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833593486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:12,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:12,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:12,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404728675] [2023-08-26 08:59:12,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:12,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:12,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:12,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:12,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:12,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 888 [2023-08-26 08:59:12,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 155 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 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 08:59:12,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:12,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 888 [2023-08-26 08:59:12,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:13,089 INFO L124 PetriNetUnfolderBase]: 1149/3974 cut-off events. [2023-08-26 08:59:13,090 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-26 08:59:13,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5801 conditions, 3974 events. 1149/3974 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 33075 event pairs, 445 based on Foata normal form. 0/3197 useless extension candidates. Maximal degree in co-relation 5797. Up to 1736 conditions per place. [2023-08-26 08:59:13,116 INFO L140 encePairwiseOnDemand]: 882/888 looper letters, 59 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2023-08-26 08:59:13,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 157 transitions, 454 flow [2023-08-26 08:59:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-08-26 08:59:13,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262762762762763 [2023-08-26 08:59:13,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-08-26 08:59:13,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-08-26 08:59:13,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:13,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-08-26 08:59:13,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 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 08:59:13,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:13,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:13,132 INFO L175 Difference]: Start difference. First operand has 148 places, 155 transitions, 324 flow. Second operand 3 states and 1402 transitions. [2023-08-26 08:59:13,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 157 transitions, 454 flow [2023-08-26 08:59:13,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 157 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:13,135 INFO L231 Difference]: Finished difference. Result has 147 places, 153 transitions, 330 flow [2023-08-26 08:59:13,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=147, PETRI_TRANSITIONS=153} [2023-08-26 08:59:13,136 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -27 predicate places. [2023-08-26 08:59:13,136 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 153 transitions, 330 flow [2023-08-26 08:59:13,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 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 08:59:13,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:13,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:13,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 08:59:13,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:13,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:13,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1702588726, now seen corresponding path program 1 times [2023-08-26 08:59:13,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:13,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180405643] [2023-08-26 08:59:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:13,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:13,188 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 08:59:13,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:13,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180405643] [2023-08-26 08:59:13,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180405643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:13,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:13,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:13,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186059104] [2023-08-26 08:59:13,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:13,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:13,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:13,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:13,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 443 out of 888 [2023-08-26 08:59:13,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 153 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 445.6666666666667) internal successors, (1337), 3 states have internal predecessors, (1337), 0 states have call successors, (0), 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 08:59:13,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:13,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 443 of 888 [2023-08-26 08:59:13,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:13,504 INFO L124 PetriNetUnfolderBase]: 1099/3702 cut-off events. [2023-08-26 08:59:13,504 INFO L125 PetriNetUnfolderBase]: For 79/80 co-relation queries the response was YES. [2023-08-26 08:59:13,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5488 conditions, 3702 events. 1099/3702 cut-off events. For 79/80 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 30241 event pairs, 695 based on Foata normal form. 0/2967 useless extension candidates. Maximal degree in co-relation 5483. Up to 1672 conditions per place. [2023-08-26 08:59:13,530 INFO L140 encePairwiseOnDemand]: 883/888 looper letters, 54 selfloop transitions, 1 changer transitions 0/149 dead transitions. [2023-08-26 08:59:13,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 149 transitions, 432 flow [2023-08-26 08:59:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1386 transitions. [2023-08-26 08:59:13,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2023-08-26 08:59:13,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1386 transitions. [2023-08-26 08:59:13,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1386 transitions. [2023-08-26 08:59:13,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:13,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1386 transitions. [2023-08-26 08:59:13,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 0 states have call successors, (0), 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 08:59:13,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:13,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:13,543 INFO L175 Difference]: Start difference. First operand has 147 places, 153 transitions, 330 flow. Second operand 3 states and 1386 transitions. [2023-08-26 08:59:13,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 149 transitions, 432 flow [2023-08-26 08:59:13,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 149 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:13,546 INFO L231 Difference]: Finished difference. Result has 145 places, 149 transitions, 324 flow [2023-08-26 08:59:13,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=145, PETRI_TRANSITIONS=149} [2023-08-26 08:59:13,547 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -29 predicate places. [2023-08-26 08:59:13,547 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 149 transitions, 324 flow [2023-08-26 08:59:13,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 445.6666666666667) internal successors, (1337), 3 states have internal predecessors, (1337), 0 states have call successors, (0), 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 08:59:13,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:13,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:13,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 08:59:13,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:13,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1787872027, now seen corresponding path program 1 times [2023-08-26 08:59:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:13,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399783571] [2023-08-26 08:59:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:13,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:13,992 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 08:59:13,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:13,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399783571] [2023-08-26 08:59:13,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399783571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:13,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:13,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231033327] [2023-08-26 08:59:13,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:13,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:59:13,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:59:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:59:13,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 888 [2023-08-26 08:59:13,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 149 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 384.8333333333333) internal successors, (2309), 6 states have internal predecessors, (2309), 0 states have call successors, (0), 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 08:59:13,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:13,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 888 [2023-08-26 08:59:14,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:16,407 INFO L124 PetriNetUnfolderBase]: 15616/23891 cut-off events. [2023-08-26 08:59:16,407 INFO L125 PetriNetUnfolderBase]: For 428/429 co-relation queries the response was YES. [2023-08-26 08:59:16,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47652 conditions, 23891 events. 15616/23891 cut-off events. For 428/429 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 160401 event pairs, 1123 based on Foata normal form. 0/19613 useless extension candidates. Maximal degree in co-relation 47646. Up to 8502 conditions per place. [2023-08-26 08:59:16,552 INFO L140 encePairwiseOnDemand]: 883/888 looper letters, 413 selfloop transitions, 4 changer transitions 0/464 dead transitions. [2023-08-26 08:59:16,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 464 transitions, 1828 flow [2023-08-26 08:59:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2706 transitions. [2023-08-26 08:59:16,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078828828828829 [2023-08-26 08:59:16,559 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2706 transitions. [2023-08-26 08:59:16,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2706 transitions. [2023-08-26 08:59:16,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:16,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2706 transitions. [2023-08-26 08:59:16,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 451.0) internal successors, (2706), 6 states have internal predecessors, (2706), 0 states have call successors, (0), 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 08:59:16,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:16,578 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:16,578 INFO L175 Difference]: Start difference. First operand has 145 places, 149 transitions, 324 flow. Second operand 6 states and 2706 transitions. [2023-08-26 08:59:16,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 464 transitions, 1828 flow [2023-08-26 08:59:16,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 464 transitions, 1827 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:16,584 INFO L231 Difference]: Finished difference. Result has 148 places, 148 transitions, 329 flow [2023-08-26 08:59:16,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=148, PETRI_TRANSITIONS=148} [2023-08-26 08:59:16,585 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -26 predicate places. [2023-08-26 08:59:16,585 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 148 transitions, 329 flow [2023-08-26 08:59:16,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 384.8333333333333) internal successors, (2309), 6 states have internal predecessors, (2309), 0 states have call successors, (0), 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 08:59:16,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:16,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:16,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 08:59:16,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:16,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:16,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1649275429, now seen corresponding path program 1 times [2023-08-26 08:59:16,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:16,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479169308] [2023-08-26 08:59:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:16,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:16,616 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 08:59:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479169308] [2023-08-26 08:59:16,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479169308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:16,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:16,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:16,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451085431] [2023-08-26 08:59:16,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:16,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:16,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:16,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:16,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 443 out of 888 [2023-08-26 08:59:16,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 148 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 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 08:59:16,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:16,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 443 of 888 [2023-08-26 08:59:16,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:16,998 INFO L124 PetriNetUnfolderBase]: 1139/3730 cut-off events. [2023-08-26 08:59:16,998 INFO L125 PetriNetUnfolderBase]: For 325/326 co-relation queries the response was YES. [2023-08-26 08:59:17,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5885 conditions, 3730 events. 1139/3730 cut-off events. For 325/326 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 30329 event pairs, 695 based on Foata normal form. 0/2997 useless extension candidates. Maximal degree in co-relation 5879. Up to 1727 conditions per place. [2023-08-26 08:59:17,023 INFO L140 encePairwiseOnDemand]: 883/888 looper letters, 54 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2023-08-26 08:59:17,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 144 transitions, 431 flow [2023-08-26 08:59:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1386 transitions. [2023-08-26 08:59:17,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2023-08-26 08:59:17,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1386 transitions. [2023-08-26 08:59:17,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1386 transitions. [2023-08-26 08:59:17,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:17,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1386 transitions. [2023-08-26 08:59:17,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 0 states have call successors, (0), 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 08:59:17,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:17,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:17,038 INFO L175 Difference]: Start difference. First operand has 148 places, 148 transitions, 329 flow. Second operand 3 states and 1386 transitions. [2023-08-26 08:59:17,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 144 transitions, 431 flow [2023-08-26 08:59:17,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 144 transitions, 424 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 08:59:17,043 INFO L231 Difference]: Finished difference. Result has 142 places, 144 transitions, 316 flow [2023-08-26 08:59:17,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=142, PETRI_TRANSITIONS=144} [2023-08-26 08:59:17,046 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -32 predicate places. [2023-08-26 08:59:17,048 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 144 transitions, 316 flow [2023-08-26 08:59:17,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 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 08:59:17,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:17,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:17,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 08:59:17,050 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:17,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash 195214718, now seen corresponding path program 1 times [2023-08-26 08:59:17,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:17,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159922644] [2023-08-26 08:59:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:17,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:17,078 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 08:59:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159922644] [2023-08-26 08:59:17,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159922644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:17,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:17,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:59:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114250168] [2023-08-26 08:59:17,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:17,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:17,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:17,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 888 [2023-08-26 08:59:17,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 144 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 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 08:59:17,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:17,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 888 [2023-08-26 08:59:17,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:17,393 INFO L124 PetriNetUnfolderBase]: 973/3439 cut-off events. [2023-08-26 08:59:17,393 INFO L125 PetriNetUnfolderBase]: For 70/75 co-relation queries the response was YES. [2023-08-26 08:59:17,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5038 conditions, 3439 events. 973/3439 cut-off events. For 70/75 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 28022 event pairs, 523 based on Foata normal form. 0/2751 useless extension candidates. Maximal degree in co-relation 5032. Up to 1376 conditions per place. [2023-08-26 08:59:17,413 INFO L140 encePairwiseOnDemand]: 885/888 looper letters, 73 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2023-08-26 08:59:17,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 168 transitions, 517 flow [2023-08-26 08:59:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1433 transitions. [2023-08-26 08:59:17,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379129129129129 [2023-08-26 08:59:17,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1433 transitions. [2023-08-26 08:59:17,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1433 transitions. [2023-08-26 08:59:17,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:17,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1433 transitions. [2023-08-26 08:59:17,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 477.6666666666667) internal successors, (1433), 3 states have internal predecessors, (1433), 0 states have call successors, (0), 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 08:59:17,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:17,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:17,439 INFO L175 Difference]: Start difference. First operand has 142 places, 144 transitions, 316 flow. Second operand 3 states and 1433 transitions. [2023-08-26 08:59:17,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 168 transitions, 517 flow [2023-08-26 08:59:17,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 168 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:17,442 INFO L231 Difference]: Finished difference. Result has 144 places, 145 transitions, 327 flow [2023-08-26 08:59:17,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=144, PETRI_TRANSITIONS=145} [2023-08-26 08:59:17,443 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -30 predicate places. [2023-08-26 08:59:17,443 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 145 transitions, 327 flow [2023-08-26 08:59:17,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 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 08:59:17,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:17,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:17,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 08:59:17,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:17,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash -110425874, now seen corresponding path program 1 times [2023-08-26 08:59:17,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:17,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462301792] [2023-08-26 08:59:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:17,479 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 08:59:17,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462301792] [2023-08-26 08:59:17,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462301792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:17,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:17,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:59:17,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254865971] [2023-08-26 08:59:17,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:17,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:17,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 888 [2023-08-26 08:59:17,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 145 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 456.3333333333333) internal successors, (1369), 3 states have internal predecessors, (1369), 0 states have call successors, (0), 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 08:59:17,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:17,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 888 [2023-08-26 08:59:17,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:17,905 INFO L124 PetriNetUnfolderBase]: 1024/3577 cut-off events. [2023-08-26 08:59:17,905 INFO L125 PetriNetUnfolderBase]: For 221/222 co-relation queries the response was YES. [2023-08-26 08:59:17,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5443 conditions, 3577 events. 1024/3577 cut-off events. For 221/222 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 29129 event pairs, 569 based on Foata normal form. 0/2913 useless extension candidates. Maximal degree in co-relation 5436. Up to 1468 conditions per place. [2023-08-26 08:59:17,927 INFO L140 encePairwiseOnDemand]: 885/888 looper letters, 71 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-08-26 08:59:17,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 166 transitions, 528 flow [2023-08-26 08:59:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1429 transitions. [2023-08-26 08:59:17,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364114114114115 [2023-08-26 08:59:17,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1429 transitions. [2023-08-26 08:59:17,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1429 transitions. [2023-08-26 08:59:17,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:17,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1429 transitions. [2023-08-26 08:59:17,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.3333333333333) internal successors, (1429), 3 states have internal predecessors, (1429), 0 states have call successors, (0), 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 08:59:17,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:17,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:17,941 INFO L175 Difference]: Start difference. First operand has 144 places, 145 transitions, 327 flow. Second operand 3 states and 1429 transitions. [2023-08-26 08:59:17,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 166 transitions, 528 flow [2023-08-26 08:59:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 166 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:17,947 INFO L231 Difference]: Finished difference. Result has 146 places, 146 transitions, 337 flow [2023-08-26 08:59:17,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=146, PETRI_TRANSITIONS=146} [2023-08-26 08:59:17,949 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -28 predicate places. [2023-08-26 08:59:17,949 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 146 transitions, 337 flow [2023-08-26 08:59:17,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 456.3333333333333) internal successors, (1369), 3 states have internal predecessors, (1369), 0 states have call successors, (0), 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 08:59:17,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:17,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 08:59:17,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:17,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1390845438, now seen corresponding path program 1 times [2023-08-26 08:59:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307487306] [2023-08-26 08:59:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:17,978 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 08:59:17,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307487306] [2023-08-26 08:59:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307487306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:17,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146264839] [2023-08-26 08:59:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:17,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 888 [2023-08-26 08:59:17,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 146 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 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 08:59:17,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:17,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 888 [2023-08-26 08:59:17,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:18,460 INFO L124 PetriNetUnfolderBase]: 1895/5224 cut-off events. [2023-08-26 08:59:18,460 INFO L125 PetriNetUnfolderBase]: For 523/530 co-relation queries the response was YES. [2023-08-26 08:59:18,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8870 conditions, 5224 events. 1895/5224 cut-off events. For 523/530 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 42467 event pairs, 391 based on Foata normal form. 0/4430 useless extension candidates. Maximal degree in co-relation 8862. Up to 2060 conditions per place. [2023-08-26 08:59:18,488 INFO L140 encePairwiseOnDemand]: 882/888 looper letters, 92 selfloop transitions, 2 changer transitions 0/177 dead transitions. [2023-08-26 08:59:18,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 177 transitions, 612 flow [2023-08-26 08:59:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-08-26 08:59:18,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367867867867868 [2023-08-26 08:59:18,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-08-26 08:59:18,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-08-26 08:59:18,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:18,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-08-26 08:59:18,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 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 08:59:18,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:18,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:18,499 INFO L175 Difference]: Start difference. First operand has 146 places, 146 transitions, 337 flow. Second operand 3 states and 1430 transitions. [2023-08-26 08:59:18,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 177 transitions, 612 flow [2023-08-26 08:59:18,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 177 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:18,504 INFO L231 Difference]: Finished difference. Result has 144 places, 144 transitions, 343 flow [2023-08-26 08:59:18,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=144, PETRI_TRANSITIONS=144} [2023-08-26 08:59:18,505 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -30 predicate places. [2023-08-26 08:59:18,505 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 144 transitions, 343 flow [2023-08-26 08:59:18,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 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 08:59:18,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:18,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:18,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 08:59:18,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:18,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:18,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1246405457, now seen corresponding path program 1 times [2023-08-26 08:59:18,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:18,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176281497] [2023-08-26 08:59:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:18,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:18,530 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 08:59:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176281497] [2023-08-26 08:59:18,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176281497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:18,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:18,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:59:18,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33812077] [2023-08-26 08:59:18,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:18,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:18,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:18,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 888 [2023-08-26 08:59:18,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 144 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 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 08:59:18,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:18,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 888 [2023-08-26 08:59:18,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:18,981 INFO L124 PetriNetUnfolderBase]: 1892/5118 cut-off events. [2023-08-26 08:59:18,981 INFO L125 PetriNetUnfolderBase]: For 555/556 co-relation queries the response was YES. [2023-08-26 08:59:18,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8853 conditions, 5118 events. 1892/5118 cut-off events. For 555/556 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 41137 event pairs, 375 based on Foata normal form. 0/4499 useless extension candidates. Maximal degree in co-relation 8845. Up to 2097 conditions per place. [2023-08-26 08:59:19,010 INFO L140 encePairwiseOnDemand]: 882/888 looper letters, 91 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2023-08-26 08:59:19,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 174 transitions, 615 flow [2023-08-26 08:59:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:19,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1428 transitions. [2023-08-26 08:59:19,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536036036036036 [2023-08-26 08:59:19,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1428 transitions. [2023-08-26 08:59:19,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1428 transitions. [2023-08-26 08:59:19,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:19,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1428 transitions. [2023-08-26 08:59:19,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.0) internal successors, (1428), 3 states have internal predecessors, (1428), 0 states have call successors, (0), 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 08:59:19,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:19,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:19,021 INFO L175 Difference]: Start difference. First operand has 144 places, 144 transitions, 343 flow. Second operand 3 states and 1428 transitions. [2023-08-26 08:59:19,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 174 transitions, 615 flow [2023-08-26 08:59:19,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 174 transitions, 615 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:19,026 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 351 flow [2023-08-26 08:59:19,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2023-08-26 08:59:19,027 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -31 predicate places. [2023-08-26 08:59:19,027 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 351 flow [2023-08-26 08:59:19,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 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 08:59:19,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:19,027 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 08:59:19,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 08:59:19,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:19,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash 606950824, now seen corresponding path program 1 times [2023-08-26 08:59:19,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:19,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815082629] [2023-08-26 08:59:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:19,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:19,104 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 08:59:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815082629] [2023-08-26 08:59:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815082629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:19,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:19,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 08:59:19,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78414077] [2023-08-26 08:59:19,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:19,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 08:59:19,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:19,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 08:59:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 08:59:19,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 888 [2023-08-26 08:59:19,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 0 states have call successors, (0), 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 08:59:19,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:19,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 888 [2023-08-26 08:59:19,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:19,955 INFO L124 PetriNetUnfolderBase]: 4337/9509 cut-off events. [2023-08-26 08:59:19,955 INFO L125 PetriNetUnfolderBase]: For 1419/1449 co-relation queries the response was YES. [2023-08-26 08:59:19,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18155 conditions, 9509 events. 4337/9509 cut-off events. For 1419/1449 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 76190 event pairs, 2881 based on Foata normal form. 58/8396 useless extension candidates. Maximal degree in co-relation 18146. Up to 5310 conditions per place. [2023-08-26 08:59:19,999 INFO L140 encePairwiseOnDemand]: 880/888 looper letters, 146 selfloop transitions, 7 changer transitions 0/214 dead transitions. [2023-08-26 08:59:19,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 214 transitions, 853 flow [2023-08-26 08:59:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2452 transitions. [2023-08-26 08:59:20,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602102102102102 [2023-08-26 08:59:20,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2452 transitions. [2023-08-26 08:59:20,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2452 transitions. [2023-08-26 08:59:20,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:20,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2452 transitions. [2023-08-26 08:59:20,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 408.6666666666667) internal successors, (2452), 6 states have internal predecessors, (2452), 0 states have call successors, (0), 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 08:59:20,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:20,017 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:20,017 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 351 flow. Second operand 6 states and 2452 transitions. [2023-08-26 08:59:20,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 214 transitions, 853 flow [2023-08-26 08:59:20,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 214 transitions, 853 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:59:20,026 INFO L231 Difference]: Finished difference. Result has 152 places, 148 transitions, 406 flow [2023-08-26 08:59:20,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=152, PETRI_TRANSITIONS=148} [2023-08-26 08:59:20,027 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -22 predicate places. [2023-08-26 08:59:20,027 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 148 transitions, 406 flow [2023-08-26 08:59:20,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 0 states have call successors, (0), 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 08:59:20,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:20,028 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] [2023-08-26 08:59:20,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 08:59:20,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:20,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1079036017, now seen corresponding path program 1 times [2023-08-26 08:59:20,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:20,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395938777] [2023-08-26 08:59:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:20,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:20,154 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 08:59:20,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395938777] [2023-08-26 08:59:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395938777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:20,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:20,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 08:59:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686231220] [2023-08-26 08:59:20,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:20,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:59:20,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:59:20,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:59:20,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 888 [2023-08-26 08:59:20,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 148 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 381.6666666666667) internal successors, (2290), 6 states have internal predecessors, (2290), 0 states have call successors, (0), 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 08:59:20,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:20,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 888 [2023-08-26 08:59:20,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:21,263 INFO L124 PetriNetUnfolderBase]: 6383/14687 cut-off events. [2023-08-26 08:59:21,263 INFO L125 PetriNetUnfolderBase]: For 3234/3274 co-relation queries the response was YES. [2023-08-26 08:59:21,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28497 conditions, 14687 events. 6383/14687 cut-off events. For 3234/3274 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 132825 event pairs, 3886 based on Foata normal form. 68/13206 useless extension candidates. Maximal degree in co-relation 28483. Up to 6733 conditions per place. [2023-08-26 08:59:21,343 INFO L140 encePairwiseOnDemand]: 880/888 looper letters, 172 selfloop transitions, 13 changer transitions 0/246 dead transitions. [2023-08-26 08:59:21,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 246 transitions, 1063 flow [2023-08-26 08:59:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2437 transitions. [2023-08-26 08:59:21,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573948948948949 [2023-08-26 08:59:21,349 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2437 transitions. [2023-08-26 08:59:21,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2437 transitions. [2023-08-26 08:59:21,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:21,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2437 transitions. [2023-08-26 08:59:21,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 406.1666666666667) internal successors, (2437), 6 states have internal predecessors, (2437), 0 states have call successors, (0), 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 08:59:21,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:21,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:21,362 INFO L175 Difference]: Start difference. First operand has 152 places, 148 transitions, 406 flow. Second operand 6 states and 2437 transitions. [2023-08-26 08:59:21,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 246 transitions, 1063 flow [2023-08-26 08:59:21,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 246 transitions, 1057 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:21,384 INFO L231 Difference]: Finished difference. Result has 160 places, 157 transitions, 512 flow [2023-08-26 08:59:21,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=160, PETRI_TRANSITIONS=157} [2023-08-26 08:59:21,385 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -14 predicate places. [2023-08-26 08:59:21,385 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 157 transitions, 512 flow [2023-08-26 08:59:21,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 381.6666666666667) internal successors, (2290), 6 states have internal predecessors, (2290), 0 states have call successors, (0), 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 08:59:21,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:21,386 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] [2023-08-26 08:59:21,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 08:59:21,386 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:21,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:21,387 INFO L85 PathProgramCache]: Analyzing trace with hash 280793081, now seen corresponding path program 1 times [2023-08-26 08:59:21,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:21,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912961581] [2023-08-26 08:59:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:21,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:21,483 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 08:59:21,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912961581] [2023-08-26 08:59:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912961581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:21,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:21,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:21,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095780864] [2023-08-26 08:59:21,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:21,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:59:21,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:21,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:59:21,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:59:21,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 888 [2023-08-26 08:59:21,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 157 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 381.8333333333333) internal successors, (2291), 6 states have internal predecessors, (2291), 0 states have call successors, (0), 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 08:59:21,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:21,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 888 [2023-08-26 08:59:21,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:22,592 INFO L124 PetriNetUnfolderBase]: 5556/11903 cut-off events. [2023-08-26 08:59:22,592 INFO L125 PetriNetUnfolderBase]: For 7695/7707 co-relation queries the response was YES. [2023-08-26 08:59:22,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25979 conditions, 11903 events. 5556/11903 cut-off events. For 7695/7707 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 96850 event pairs, 3563 based on Foata normal form. 39/10697 useless extension candidates. Maximal degree in co-relation 25961. Up to 7581 conditions per place. [2023-08-26 08:59:22,728 INFO L140 encePairwiseOnDemand]: 880/888 looper letters, 143 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2023-08-26 08:59:22,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 219 transitions, 1066 flow [2023-08-26 08:59:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2399 transitions. [2023-08-26 08:59:22,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502627627627628 [2023-08-26 08:59:22,735 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2399 transitions. [2023-08-26 08:59:22,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2399 transitions. [2023-08-26 08:59:22,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:22,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2399 transitions. [2023-08-26 08:59:22,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 399.8333333333333) internal successors, (2399), 6 states have internal predecessors, (2399), 0 states have call successors, (0), 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 08:59:22,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:22,750 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:22,750 INFO L175 Difference]: Start difference. First operand has 160 places, 157 transitions, 512 flow. Second operand 6 states and 2399 transitions. [2023-08-26 08:59:22,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 219 transitions, 1066 flow [2023-08-26 08:59:22,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 219 transitions, 1052 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:22,771 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 557 flow [2023-08-26 08:59:22,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=557, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2023-08-26 08:59:22,772 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -7 predicate places. [2023-08-26 08:59:22,772 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 557 flow [2023-08-26 08:59:22,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 381.8333333333333) internal successors, (2291), 6 states have internal predecessors, (2291), 0 states have call successors, (0), 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 08:59:22,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:22,773 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] [2023-08-26 08:59:22,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 08:59:22,773 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:22,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash -445191438, now seen corresponding path program 1 times [2023-08-26 08:59:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:22,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61020805] [2023-08-26 08:59:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:22,868 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 08:59:22,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:22,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61020805] [2023-08-26 08:59:22,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61020805] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:22,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:22,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:22,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943241685] [2023-08-26 08:59:22,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:22,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 08:59:22,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:22,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 08:59:22,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 08:59:22,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 888 [2023-08-26 08:59:22,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 557 flow. Second operand has 5 states, 5 states have (on average 388.6) internal successors, (1943), 5 states have internal predecessors, (1943), 0 states have call successors, (0), 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 08:59:22,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:22,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 888 [2023-08-26 08:59:22,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:23,598 INFO L124 PetriNetUnfolderBase]: 3765/8488 cut-off events. [2023-08-26 08:59:23,598 INFO L125 PetriNetUnfolderBase]: For 5468/5524 co-relation queries the response was YES. [2023-08-26 08:59:23,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18549 conditions, 8488 events. 3765/8488 cut-off events. For 5468/5524 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 67188 event pairs, 2346 based on Foata normal form. 45/7653 useless extension candidates. Maximal degree in co-relation 18528. Up to 4870 conditions per place. [2023-08-26 08:59:23,649 INFO L140 encePairwiseOnDemand]: 882/888 looper letters, 130 selfloop transitions, 10 changer transitions 0/208 dead transitions. [2023-08-26 08:59:23,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 208 transitions, 1024 flow [2023-08-26 08:59:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2038 transitions. [2023-08-26 08:59:23,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459009009009009 [2023-08-26 08:59:23,655 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2038 transitions. [2023-08-26 08:59:23,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2038 transitions. [2023-08-26 08:59:23,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:23,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2038 transitions. [2023-08-26 08:59:23,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 407.6) internal successors, (2038), 5 states have internal predecessors, (2038), 0 states have call successors, (0), 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 08:59:23,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:23,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:23,667 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 557 flow. Second operand 5 states and 2038 transitions. [2023-08-26 08:59:23,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 208 transitions, 1024 flow [2023-08-26 08:59:23,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 208 transitions, 1019 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 08:59:23,690 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 616 flow [2023-08-26 08:59:23,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2023-08-26 08:59:23,690 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -3 predicate places. [2023-08-26 08:59:23,690 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 616 flow [2023-08-26 08:59:23,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 388.6) internal successors, (1943), 5 states have internal predecessors, (1943), 0 states have call successors, (0), 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 08:59:23,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:23,691 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] [2023-08-26 08:59:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 08:59:23,691 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:23,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash -286726685, now seen corresponding path program 1 times [2023-08-26 08:59:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:23,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498479225] [2023-08-26 08:59:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 08:59:24,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:24,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498479225] [2023-08-26 08:59:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498479225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421411377] [2023-08-26 08:59:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:59:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:59:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:59:24,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 888 [2023-08-26 08:59:24,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 377.8333333333333) internal successors, (2267), 6 states have internal predecessors, (2267), 0 states have call successors, (0), 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 08:59:24,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:24,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 888 [2023-08-26 08:59:24,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:27,761 INFO L124 PetriNetUnfolderBase]: 24511/39714 cut-off events. [2023-08-26 08:59:27,761 INFO L125 PetriNetUnfolderBase]: For 25023/25027 co-relation queries the response was YES. [2023-08-26 08:59:27,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94350 conditions, 39714 events. 24511/39714 cut-off events. For 25023/25027 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 284295 event pairs, 8663 based on Foata normal form. 0/36347 useless extension candidates. Maximal degree in co-relation 94327. Up to 19313 conditions per place. [2023-08-26 08:59:28,034 INFO L140 encePairwiseOnDemand]: 880/888 looper letters, 317 selfloop transitions, 6 changer transitions 0/356 dead transitions. [2023-08-26 08:59:28,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 356 transitions, 1790 flow [2023-08-26 08:59:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2537 transitions. [2023-08-26 08:59:28,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47616366366366364 [2023-08-26 08:59:28,041 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2537 transitions. [2023-08-26 08:59:28,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2537 transitions. [2023-08-26 08:59:28,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:28,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2537 transitions. [2023-08-26 08:59:28,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 422.8333333333333) internal successors, (2537), 6 states have internal predecessors, (2537), 0 states have call successors, (0), 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 08:59:28,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:28,054 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:28,055 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 616 flow. Second operand 6 states and 2537 transitions. [2023-08-26 08:59:28,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 356 transitions, 1790 flow [2023-08-26 08:59:28,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 356 transitions, 1780 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 08:59:28,136 INFO L231 Difference]: Finished difference. Result has 172 places, 164 transitions, 614 flow [2023-08-26 08:59:28,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=614, PETRI_PLACES=172, PETRI_TRANSITIONS=164} [2023-08-26 08:59:28,137 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -2 predicate places. [2023-08-26 08:59:28,137 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 164 transitions, 614 flow [2023-08-26 08:59:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 377.8333333333333) internal successors, (2267), 6 states have internal predecessors, (2267), 0 states have call successors, (0), 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 08:59:28,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:28,138 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] [2023-08-26 08:59:28,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 08:59:28,138 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:28,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1653405922, now seen corresponding path program 1 times [2023-08-26 08:59:28,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:28,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738460010] [2023-08-26 08:59:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:28,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 08:59:28,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:28,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738460010] [2023-08-26 08:59:28,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738460010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:28,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:28,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:28,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078638157] [2023-08-26 08:59:28,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:28,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:59:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:28,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:59:28,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:59:28,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 888 [2023-08-26 08:59:28,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 164 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 378.1666666666667) internal successors, (2269), 6 states have internal predecessors, (2269), 0 states have call successors, (0), 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 08:59:28,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:28,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 888 [2023-08-26 08:59:28,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:31,901 INFO L124 PetriNetUnfolderBase]: 22528/36815 cut-off events. [2023-08-26 08:59:31,902 INFO L125 PetriNetUnfolderBase]: For 25187/25191 co-relation queries the response was YES. [2023-08-26 08:59:32,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89194 conditions, 36815 events. 22528/36815 cut-off events. For 25187/25191 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 265456 event pairs, 8065 based on Foata normal form. 0/34500 useless extension candidates. Maximal degree in co-relation 89171. Up to 17823 conditions per place. [2023-08-26 08:59:32,095 INFO L140 encePairwiseOnDemand]: 880/888 looper letters, 329 selfloop transitions, 6 changer transitions 0/370 dead transitions. [2023-08-26 08:59:32,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 370 transitions, 1900 flow [2023-08-26 08:59:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2549 transitions. [2023-08-26 08:59:32,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784159159159159 [2023-08-26 08:59:32,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2549 transitions. [2023-08-26 08:59:32,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2549 transitions. [2023-08-26 08:59:32,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:32,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2549 transitions. [2023-08-26 08:59:32,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 424.8333333333333) internal successors, (2549), 6 states have internal predecessors, (2549), 0 states have call successors, (0), 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 08:59:32,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:32,112 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:32,112 INFO L175 Difference]: Start difference. First operand has 172 places, 164 transitions, 614 flow. Second operand 6 states and 2549 transitions. [2023-08-26 08:59:32,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 370 transitions, 1900 flow [2023-08-26 08:59:32,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 370 transitions, 1840 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 08:59:32,192 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 610 flow [2023-08-26 08:59:32,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2023-08-26 08:59:32,192 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -4 predicate places. [2023-08-26 08:59:32,192 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 610 flow [2023-08-26 08:59:32,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 378.1666666666667) internal successors, (2269), 6 states have internal predecessors, (2269), 0 states have call successors, (0), 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 08:59:32,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:32,193 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 08:59:32,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 08:59:32,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:32,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash -835725488, now seen corresponding path program 1 times [2023-08-26 08:59:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154226628] [2023-08-26 08:59:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:32,287 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 08:59:32,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154226628] [2023-08-26 08:59:32,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154226628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:32,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:32,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:59:32,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774384379] [2023-08-26 08:59:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:32,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:32,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:32,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:32,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 457 out of 888 [2023-08-26 08:59:32,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 461.6666666666667) internal successors, (1385), 3 states have internal predecessors, (1385), 0 states have call successors, (0), 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 08:59:32,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:32,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 457 of 888 [2023-08-26 08:59:32,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:33,002 INFO L124 PetriNetUnfolderBase]: 2594/6976 cut-off events. [2023-08-26 08:59:33,002 INFO L125 PetriNetUnfolderBase]: For 5045/5077 co-relation queries the response was YES. [2023-08-26 08:59:33,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15007 conditions, 6976 events. 2594/6976 cut-off events. For 5045/5077 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 58323 event pairs, 1025 based on Foata normal form. 2/6568 useless extension candidates. Maximal degree in co-relation 14984. Up to 3461 conditions per place. [2023-08-26 08:59:33,028 INFO L140 encePairwiseOnDemand]: 885/888 looper letters, 117 selfloop transitions, 3 changer transitions 0/203 dead transitions. [2023-08-26 08:59:33,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 203 transitions, 1039 flow [2023-08-26 08:59:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1450 transitions. [2023-08-26 08:59:33,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442942942942943 [2023-08-26 08:59:33,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1450 transitions. [2023-08-26 08:59:33,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1450 transitions. [2023-08-26 08:59:33,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:33,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1450 transitions. [2023-08-26 08:59:33,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 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 08:59:33,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:33,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:33,038 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 610 flow. Second operand 3 states and 1450 transitions. [2023-08-26 08:59:33,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 203 transitions, 1039 flow [2023-08-26 08:59:33,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 203 transitions, 1023 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 08:59:33,058 INFO L231 Difference]: Finished difference. Result has 168 places, 162 transitions, 609 flow [2023-08-26 08:59:33,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=609, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2023-08-26 08:59:33,059 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -6 predicate places. [2023-08-26 08:59:33,059 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 609 flow [2023-08-26 08:59:33,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 461.6666666666667) internal successors, (1385), 3 states have internal predecessors, (1385), 0 states have call successors, (0), 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 08:59:33,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:33,060 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 08:59:33,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 08:59:33,060 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:33,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1126075371, now seen corresponding path program 1 times [2023-08-26 08:59:33,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:33,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788325322] [2023-08-26 08:59:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:33,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:33,357 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 08:59:33,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:33,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788325322] [2023-08-26 08:59:33,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788325322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:33,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:33,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:33,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800065380] [2023-08-26 08:59:33,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:33,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:59:33,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:33,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:59:33,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:59:33,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 888 [2023-08-26 08:59:33,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 609 flow. Second operand has 6 states, 6 states have (on average 386.3333333333333) internal successors, (2318), 6 states have internal predecessors, (2318), 0 states have call successors, (0), 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 08:59:33,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:33,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 888 [2023-08-26 08:59:33,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:36,640 INFO L124 PetriNetUnfolderBase]: 21981/37376 cut-off events. [2023-08-26 08:59:36,640 INFO L125 PetriNetUnfolderBase]: For 25451/25459 co-relation queries the response was YES. [2023-08-26 08:59:36,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88510 conditions, 37376 events. 21981/37376 cut-off events. For 25451/25459 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 275595 event pairs, 17421 based on Foata normal form. 0/35274 useless extension candidates. Maximal degree in co-relation 88486. Up to 31987 conditions per place. [2023-08-26 08:59:37,067 INFO L140 encePairwiseOnDemand]: 883/888 looper letters, 312 selfloop transitions, 4 changer transitions 0/353 dead transitions. [2023-08-26 08:59:37,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 353 transitions, 2011 flow [2023-08-26 08:59:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2541 transitions. [2023-08-26 08:59:37,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769144144144144 [2023-08-26 08:59:37,072 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2541 transitions. [2023-08-26 08:59:37,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2541 transitions. [2023-08-26 08:59:37,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:37,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2541 transitions. [2023-08-26 08:59:37,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 423.5) internal successors, (2541), 6 states have internal predecessors, (2541), 0 states have call successors, (0), 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 08:59:37,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:37,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:37,084 INFO L175 Difference]: Start difference. First operand has 168 places, 162 transitions, 609 flow. Second operand 6 states and 2541 transitions. [2023-08-26 08:59:37,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 353 transitions, 2011 flow [2023-08-26 08:59:37,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 353 transitions, 2005 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 08:59:37,156 INFO L231 Difference]: Finished difference. Result has 170 places, 161 transitions, 609 flow [2023-08-26 08:59:37,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=609, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2023-08-26 08:59:37,157 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -4 predicate places. [2023-08-26 08:59:37,157 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 609 flow [2023-08-26 08:59:37,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 386.3333333333333) internal successors, (2318), 6 states have internal predecessors, (2318), 0 states have call successors, (0), 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 08:59:37,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:37,158 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, 1, 1, 1, 1, 1] [2023-08-26 08:59:37,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 08:59:37,158 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:37,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash -229457911, now seen corresponding path program 1 times [2023-08-26 08:59:37,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:37,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56590428] [2023-08-26 08:59:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:37,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 08:59:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:37,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56590428] [2023-08-26 08:59:37,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56590428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:37,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:37,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196499509] [2023-08-26 08:59:37,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:59:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:59:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:59:37,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 888 [2023-08-26 08:59:37,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 609 flow. Second operand has 6 states, 6 states have (on average 378.8333333333333) internal successors, (2273), 6 states have internal predecessors, (2273), 0 states have call successors, (0), 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 08:59:37,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:37,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 888 [2023-08-26 08:59:37,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:41,198 INFO L124 PetriNetUnfolderBase]: 22916/38196 cut-off events. [2023-08-26 08:59:41,198 INFO L125 PetriNetUnfolderBase]: For 24549/24557 co-relation queries the response was YES. [2023-08-26 08:59:41,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90859 conditions, 38196 events. 22916/38196 cut-off events. For 24549/24557 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 276605 event pairs, 12593 based on Foata normal form. 0/36273 useless extension candidates. Maximal degree in co-relation 90835. Up to 24284 conditions per place. [2023-08-26 08:59:41,484 INFO L140 encePairwiseOnDemand]: 880/888 looper letters, 300 selfloop transitions, 6 changer transitions 0/339 dead transitions. [2023-08-26 08:59:41,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 339 transitions, 1697 flow [2023-08-26 08:59:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2524 transitions. [2023-08-26 08:59:41,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47372372372372373 [2023-08-26 08:59:41,488 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2524 transitions. [2023-08-26 08:59:41,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2524 transitions. [2023-08-26 08:59:41,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:41,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2524 transitions. [2023-08-26 08:59:41,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 420.6666666666667) internal successors, (2524), 6 states have internal predecessors, (2524), 0 states have call successors, (0), 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 08:59:41,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:41,499 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:41,500 INFO L175 Difference]: Start difference. First operand has 170 places, 161 transitions, 609 flow. Second operand 6 states and 2524 transitions. [2023-08-26 08:59:41,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 339 transitions, 1697 flow [2023-08-26 08:59:41,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 339 transitions, 1690 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 08:59:41,574 INFO L231 Difference]: Finished difference. Result has 169 places, 159 transitions, 610 flow [2023-08-26 08:59:41,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=169, PETRI_TRANSITIONS=159} [2023-08-26 08:59:41,575 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -5 predicate places. [2023-08-26 08:59:41,575 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 159 transitions, 610 flow [2023-08-26 08:59:41,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 378.8333333333333) internal successors, (2273), 6 states have internal predecessors, (2273), 0 states have call successors, (0), 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 08:59:41,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:41,576 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, 1, 1, 1, 1, 1] [2023-08-26 08:59:41,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 08:59:41,576 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:41,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:41,576 INFO L85 PathProgramCache]: Analyzing trace with hash -748272658, now seen corresponding path program 1 times [2023-08-26 08:59:41,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:41,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463595306] [2023-08-26 08:59:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:41,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 08:59:41,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463595306] [2023-08-26 08:59:41,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463595306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:41,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:41,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:41,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193468939] [2023-08-26 08:59:41,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:41,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:59:41,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:41,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:59:41,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:59:41,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 888 [2023-08-26 08:59:41,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 159 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 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 08:59:41,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:41,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 888 [2023-08-26 08:59:41,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:45,314 INFO L124 PetriNetUnfolderBase]: 21254/35826 cut-off events. [2023-08-26 08:59:45,315 INFO L125 PetriNetUnfolderBase]: For 24588/24596 co-relation queries the response was YES. [2023-08-26 08:59:45,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86300 conditions, 35826 events. 21254/35826 cut-off events. For 24588/24596 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 261859 event pairs, 11338 based on Foata normal form. 0/34631 useless extension candidates. Maximal degree in co-relation 86276. Up to 22066 conditions per place. [2023-08-26 08:59:45,592 INFO L140 encePairwiseOnDemand]: 880/888 looper letters, 308 selfloop transitions, 6 changer transitions 0/349 dead transitions. [2023-08-26 08:59:45,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 349 transitions, 1814 flow [2023-08-26 08:59:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:59:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:59:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2532 transitions. [2023-08-26 08:59:45,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752252252252252 [2023-08-26 08:59:45,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2532 transitions. [2023-08-26 08:59:45,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2532 transitions. [2023-08-26 08:59:45,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:45,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2532 transitions. [2023-08-26 08:59:45,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 422.0) internal successors, (2532), 6 states have internal predecessors, (2532), 0 states have call successors, (0), 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 08:59:45,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:45,604 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 888.0) internal successors, (6216), 7 states have internal predecessors, (6216), 0 states have call successors, (0), 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 08:59:45,604 INFO L175 Difference]: Start difference. First operand has 169 places, 159 transitions, 610 flow. Second operand 6 states and 2532 transitions. [2023-08-26 08:59:45,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 349 transitions, 1814 flow [2023-08-26 08:59:45,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 349 transitions, 1754 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 08:59:45,657 INFO L231 Difference]: Finished difference. Result has 167 places, 157 transitions, 606 flow [2023-08-26 08:59:45,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=167, PETRI_TRANSITIONS=157} [2023-08-26 08:59:45,658 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -7 predicate places. [2023-08-26 08:59:45,658 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 157 transitions, 606 flow [2023-08-26 08:59:45,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 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 08:59:45,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:45,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:45,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 08:59:45,659 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:45,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:45,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1707349268, now seen corresponding path program 1 times [2023-08-26 08:59:45,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:45,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970465976] [2023-08-26 08:59:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:45,916 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 08:59:45,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970465976] [2023-08-26 08:59:45,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970465976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:45,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:45,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 08:59:45,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118882231] [2023-08-26 08:59:45,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:45,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 08:59:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 08:59:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 08:59:45,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 888 [2023-08-26 08:59:45,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 157 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 442.4) internal successors, (2212), 5 states have internal predecessors, (2212), 0 states have call successors, (0), 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 08:59:45,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:45,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 888 [2023-08-26 08:59:45,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:46,925 INFO L124 PetriNetUnfolderBase]: 2868/8050 cut-off events. [2023-08-26 08:59:46,925 INFO L125 PetriNetUnfolderBase]: For 6747/6767 co-relation queries the response was YES. [2023-08-26 08:59:46,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17380 conditions, 8050 events. 2868/8050 cut-off events. For 6747/6767 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 71953 event pairs, 1505 based on Foata normal form. 50/7751 useless extension candidates. Maximal degree in co-relation 17356. Up to 3449 conditions per place. [2023-08-26 08:59:46,967 INFO L140 encePairwiseOnDemand]: 881/888 looper letters, 160 selfloop transitions, 3 changer transitions 9/250 dead transitions. [2023-08-26 08:59:46,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 250 transitions, 1381 flow [2023-08-26 08:59:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2317 transitions. [2023-08-26 08:59:46,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218468468468469 [2023-08-26 08:59:46,976 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2317 transitions. [2023-08-26 08:59:46,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2317 transitions. [2023-08-26 08:59:46,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:46,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2317 transitions. [2023-08-26 08:59:46,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 463.4) internal successors, (2317), 5 states have internal predecessors, (2317), 0 states have call successors, (0), 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 08:59:46,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:46,982 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:46,982 INFO L175 Difference]: Start difference. First operand has 167 places, 157 transitions, 606 flow. Second operand 5 states and 2317 transitions. [2023-08-26 08:59:46,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 250 transitions, 1381 flow [2023-08-26 08:59:46,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 250 transitions, 1357 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 08:59:46,997 INFO L231 Difference]: Finished difference. Result has 170 places, 159 transitions, 642 flow [2023-08-26 08:59:46,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=170, PETRI_TRANSITIONS=159} [2023-08-26 08:59:46,998 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -4 predicate places. [2023-08-26 08:59:46,998 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 159 transitions, 642 flow [2023-08-26 08:59:46,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 442.4) internal successors, (2212), 5 states have internal predecessors, (2212), 0 states have call successors, (0), 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 08:59:46,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:46,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:46,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 08:59:46,999 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:46,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1969872536, now seen corresponding path program 1 times [2023-08-26 08:59:47,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:47,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639929757] [2023-08-26 08:59:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:47,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:47,035 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 08:59:47,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:47,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639929757] [2023-08-26 08:59:47,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639929757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:47,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:47,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:59:47,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029143998] [2023-08-26 08:59:47,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:47,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:47,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:47,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:47,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:47,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 888 [2023-08-26 08:59:47,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 159 transitions, 642 flow. Second operand has 3 states, 3 states have (on average 457.3333333333333) internal successors, (1372), 3 states have internal predecessors, (1372), 0 states have call successors, (0), 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 08:59:47,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:47,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 888 [2023-08-26 08:59:47,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:47,769 INFO L124 PetriNetUnfolderBase]: 2254/6300 cut-off events. [2023-08-26 08:59:47,769 INFO L125 PetriNetUnfolderBase]: For 6991/7039 co-relation queries the response was YES. [2023-08-26 08:59:47,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14421 conditions, 6300 events. 2254/6300 cut-off events. For 6991/7039 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 51966 event pairs, 830 based on Foata normal form. 170/6157 useless extension candidates. Maximal degree in co-relation 14394. Up to 3339 conditions per place. [2023-08-26 08:59:47,794 INFO L140 encePairwiseOnDemand]: 884/888 looper letters, 90 selfloop transitions, 8 changer transitions 0/176 dead transitions. [2023-08-26 08:59:47,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 176 transitions, 954 flow [2023-08-26 08:59:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1415 transitions. [2023-08-26 08:59:47,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311561561561562 [2023-08-26 08:59:47,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1415 transitions. [2023-08-26 08:59:47,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1415 transitions. [2023-08-26 08:59:47,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:47,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1415 transitions. [2023-08-26 08:59:47,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 471.6666666666667) internal successors, (1415), 3 states have internal predecessors, (1415), 0 states have call successors, (0), 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 08:59:47,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:47,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:47,800 INFO L175 Difference]: Start difference. First operand has 170 places, 159 transitions, 642 flow. Second operand 3 states and 1415 transitions. [2023-08-26 08:59:47,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 176 transitions, 954 flow [2023-08-26 08:59:47,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 176 transitions, 947 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 08:59:47,818 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 777 flow [2023-08-26 08:59:47,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=777, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2023-08-26 08:59:47,819 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -3 predicate places. [2023-08-26 08:59:47,819 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 777 flow [2023-08-26 08:59:47,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 457.3333333333333) internal successors, (1372), 3 states have internal predecessors, (1372), 0 states have call successors, (0), 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 08:59:47,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:47,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:47,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 08:59:47,819 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:47,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -537461248, now seen corresponding path program 2 times [2023-08-26 08:59:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:47,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219025563] [2023-08-26 08:59:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:47,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:48,035 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 08:59:48,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219025563] [2023-08-26 08:59:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219025563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:48,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 08:59:48,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30760882] [2023-08-26 08:59:48,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:48,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 08:59:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 08:59:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 08:59:48,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 888 [2023-08-26 08:59:48,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 777 flow. Second operand has 5 states, 5 states have (on average 442.4) internal successors, (2212), 5 states have internal predecessors, (2212), 0 states have call successors, (0), 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 08:59:48,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:48,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 888 [2023-08-26 08:59:48,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:48,599 INFO L124 PetriNetUnfolderBase]: 2254/6394 cut-off events. [2023-08-26 08:59:48,599 INFO L125 PetriNetUnfolderBase]: For 8576/8632 co-relation queries the response was YES. [2023-08-26 08:59:48,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14790 conditions, 6394 events. 2254/6394 cut-off events. For 8576/8632 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 53685 event pairs, 1441 based on Foata normal form. 30/6089 useless extension candidates. Maximal degree in co-relation 14762. Up to 3449 conditions per place. [2023-08-26 08:59:48,639 INFO L140 encePairwiseOnDemand]: 883/888 looper letters, 87 selfloop transitions, 2 changer transitions 18/182 dead transitions. [2023-08-26 08:59:48,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 182 transitions, 1032 flow [2023-08-26 08:59:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:48,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2262 transitions. [2023-08-26 08:59:48,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094594594594595 [2023-08-26 08:59:48,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2262 transitions. [2023-08-26 08:59:48,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2262 transitions. [2023-08-26 08:59:48,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:48,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2262 transitions. [2023-08-26 08:59:48,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 452.4) internal successors, (2262), 5 states have internal predecessors, (2262), 0 states have call successors, (0), 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 08:59:48,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:48,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:48,649 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 777 flow. Second operand 5 states and 2262 transitions. [2023-08-26 08:59:48,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 182 transitions, 1032 flow [2023-08-26 08:59:48,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 1000 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 08:59:48,669 INFO L231 Difference]: Finished difference. Result has 175 places, 160 transitions, 725 flow [2023-08-26 08:59:48,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=175, PETRI_TRANSITIONS=160} [2023-08-26 08:59:48,670 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 1 predicate places. [2023-08-26 08:59:48,670 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 160 transitions, 725 flow [2023-08-26 08:59:48,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 442.4) internal successors, (2212), 5 states have internal predecessors, (2212), 0 states have call successors, (0), 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 08:59:48,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:48,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:48,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 08:59:48,671 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:48,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1487697939, now seen corresponding path program 1 times [2023-08-26 08:59:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362625409] [2023-08-26 08:59:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:48,780 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 08:59:48,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362625409] [2023-08-26 08:59:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362625409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:48,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:48,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:59:48,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744059111] [2023-08-26 08:59:48,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:48,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:59:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:48,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:59:48,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:59:48,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 457 out of 888 [2023-08-26 08:59:48,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 160 transitions, 725 flow. Second operand has 3 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 0 states have call successors, (0), 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 08:59:48,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:48,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 457 of 888 [2023-08-26 08:59:48,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:49,347 INFO L124 PetriNetUnfolderBase]: 2192/5822 cut-off events. [2023-08-26 08:59:49,347 INFO L125 PetriNetUnfolderBase]: For 6448/6492 co-relation queries the response was YES. [2023-08-26 08:59:49,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13783 conditions, 5822 events. 2192/5822 cut-off events. For 6448/6492 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 45555 event pairs, 300 based on Foata normal form. 2/5616 useless extension candidates. Maximal degree in co-relation 13754. Up to 3029 conditions per place. [2023-08-26 08:59:49,381 INFO L140 encePairwiseOnDemand]: 885/888 looper letters, 116 selfloop transitions, 3 changer transitions 0/194 dead transitions. [2023-08-26 08:59:49,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 194 transitions, 1168 flow [2023-08-26 08:59:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:59:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:59:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1440 transitions. [2023-08-26 08:59:49,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2023-08-26 08:59:49,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1440 transitions. [2023-08-26 08:59:49,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1440 transitions. [2023-08-26 08:59:49,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:49,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1440 transitions. [2023-08-26 08:59:49,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.0) internal successors, (1440), 3 states have internal predecessors, (1440), 0 states have call successors, (0), 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 08:59:49,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:49,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 888.0) internal successors, (3552), 4 states have internal predecessors, (3552), 0 states have call successors, (0), 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 08:59:49,387 INFO L175 Difference]: Start difference. First operand has 175 places, 160 transitions, 725 flow. Second operand 3 states and 1440 transitions. [2023-08-26 08:59:49,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 194 transitions, 1168 flow [2023-08-26 08:59:49,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 194 transitions, 1150 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-26 08:59:49,406 INFO L231 Difference]: Finished difference. Result has 167 places, 160 transitions, 720 flow [2023-08-26 08:59:49,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=720, PETRI_PLACES=167, PETRI_TRANSITIONS=160} [2023-08-26 08:59:49,407 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -7 predicate places. [2023-08-26 08:59:49,407 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 160 transitions, 720 flow [2023-08-26 08:59:49,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 0 states have call successors, (0), 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 08:59:49,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:49,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:49,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 08:59:49,408 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:49,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1146072815, now seen corresponding path program 1 times [2023-08-26 08:59:49,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:49,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484858824] [2023-08-26 08:59:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:49,652 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 08:59:49,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:49,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484858824] [2023-08-26 08:59:49,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484858824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:49,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:59:49,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:59:49,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350670963] [2023-08-26 08:59:49,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:49,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 08:59:49,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:49,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 08:59:49,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-26 08:59:49,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 888 [2023-08-26 08:59:49,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 160 transitions, 720 flow. Second operand has 7 states, 7 states have (on average 404.2857142857143) internal successors, (2830), 7 states have internal predecessors, (2830), 0 states have call successors, (0), 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 08:59:49,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:49,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 888 [2023-08-26 08:59:49,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:50,396 INFO L124 PetriNetUnfolderBase]: 2186/5973 cut-off events. [2023-08-26 08:59:50,396 INFO L125 PetriNetUnfolderBase]: For 7067/7085 co-relation queries the response was YES. [2023-08-26 08:59:50,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 5973 events. 2186/5973 cut-off events. For 7067/7085 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 47783 event pairs, 1014 based on Foata normal form. 5/5818 useless extension candidates. Maximal degree in co-relation 14035. Up to 2069 conditions per place. [2023-08-26 08:59:50,436 INFO L140 encePairwiseOnDemand]: 877/888 looper letters, 120 selfloop transitions, 9 changer transitions 28/232 dead transitions. [2023-08-26 08:59:50,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 232 transitions, 1401 flow [2023-08-26 08:59:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 08:59:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 08:59:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2915 transitions. [2023-08-26 08:59:50,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46895109395109397 [2023-08-26 08:59:50,439 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2915 transitions. [2023-08-26 08:59:50,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2915 transitions. [2023-08-26 08:59:50,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:50,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2915 transitions. [2023-08-26 08:59:50,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 416.42857142857144) internal successors, (2915), 7 states have internal predecessors, (2915), 0 states have call successors, (0), 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 08:59:50,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 888.0) internal successors, (7104), 8 states have internal predecessors, (7104), 0 states have call successors, (0), 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 08:59:50,447 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 888.0) internal successors, (7104), 8 states have internal predecessors, (7104), 0 states have call successors, (0), 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 08:59:50,447 INFO L175 Difference]: Start difference. First operand has 167 places, 160 transitions, 720 flow. Second operand 7 states and 2915 transitions. [2023-08-26 08:59:50,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 232 transitions, 1401 flow [2023-08-26 08:59:50,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 232 transitions, 1387 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 08:59:50,469 INFO L231 Difference]: Finished difference. Result has 173 places, 157 transitions, 669 flow [2023-08-26 08:59:50,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=669, PETRI_PLACES=173, PETRI_TRANSITIONS=157} [2023-08-26 08:59:50,470 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -1 predicate places. [2023-08-26 08:59:50,470 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 157 transitions, 669 flow [2023-08-26 08:59:50,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 404.2857142857143) internal successors, (2830), 7 states have internal predecessors, (2830), 0 states have call successors, (0), 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 08:59:50,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:50,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:50,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 08:59:50,471 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:50,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:50,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1365579600, now seen corresponding path program 1 times [2023-08-26 08:59:50,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397630718] [2023-08-26 08:59:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:50,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:50,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:50,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397630718] [2023-08-26 08:59:50,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397630718] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:50,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487947666] [2023-08-26 08:59:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:50,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:50,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:50,601 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 08:59:50,628 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 08:59:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:50,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 08:59:50,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:50,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:59:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487947666] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:50,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 08:59:50,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-26 08:59:50,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890664721] [2023-08-26 08:59:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:50,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 08:59:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 08:59:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 08:59:50,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 888 [2023-08-26 08:59:50,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 157 transitions, 669 flow. Second operand has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 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 08:59:50,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:50,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 888 [2023-08-26 08:59:50,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:51,754 INFO L124 PetriNetUnfolderBase]: 3539/8182 cut-off events. [2023-08-26 08:59:51,754 INFO L125 PetriNetUnfolderBase]: For 7139/7184 co-relation queries the response was YES. [2023-08-26 08:59:51,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19377 conditions, 8182 events. 3539/8182 cut-off events. For 7139/7184 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 61533 event pairs, 1867 based on Foata normal form. 86/8051 useless extension candidates. Maximal degree in co-relation 19348. Up to 3557 conditions per place. [2023-08-26 08:59:51,810 INFO L140 encePairwiseOnDemand]: 879/888 looper letters, 140 selfloop transitions, 13 changer transitions 0/206 dead transitions. [2023-08-26 08:59:51,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 206 transitions, 1175 flow [2023-08-26 08:59:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2046 transitions. [2023-08-26 08:59:51,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608108108108108 [2023-08-26 08:59:51,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2046 transitions. [2023-08-26 08:59:51,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2046 transitions. [2023-08-26 08:59:51,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:51,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2046 transitions. [2023-08-26 08:59:51,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 409.2) internal successors, (2046), 5 states have internal predecessors, (2046), 0 states have call successors, (0), 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 08:59:51,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:51,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:51,819 INFO L175 Difference]: Start difference. First operand has 173 places, 157 transitions, 669 flow. Second operand 5 states and 2046 transitions. [2023-08-26 08:59:51,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 206 transitions, 1175 flow [2023-08-26 08:59:51,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 206 transitions, 1125 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-26 08:59:51,840 INFO L231 Difference]: Finished difference. Result has 173 places, 156 transitions, 667 flow [2023-08-26 08:59:51,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=667, PETRI_PLACES=173, PETRI_TRANSITIONS=156} [2023-08-26 08:59:51,840 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -1 predicate places. [2023-08-26 08:59:51,840 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 156 transitions, 667 flow [2023-08-26 08:59:51,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 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 08:59:51,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:51,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:51,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 08:59:52,045 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,SelfDestructingSolverStorable25 [2023-08-26 08:59:52,046 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:52,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:52,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1710334541, now seen corresponding path program 1 times [2023-08-26 08:59:52,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:52,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933819857] [2023-08-26 08:59:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:52,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:52,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:52,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933819857] [2023-08-26 08:59:52,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933819857] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:52,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519850094] [2023-08-26 08:59:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:52,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:52,161 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 08:59:52,164 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 08:59:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:52,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 08:59:52,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:52,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:59:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:52,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519850094] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:52,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 08:59:52,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2023-08-26 08:59:52,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919410579] [2023-08-26 08:59:52,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:52,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 08:59:52,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 08:59:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 08:59:52,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 888 [2023-08-26 08:59:52,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 156 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 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 08:59:52,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:52,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 888 [2023-08-26 08:59:52,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:53,191 INFO L124 PetriNetUnfolderBase]: 2926/6998 cut-off events. [2023-08-26 08:59:53,191 INFO L125 PetriNetUnfolderBase]: For 8931/8944 co-relation queries the response was YES. [2023-08-26 08:59:53,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17237 conditions, 6998 events. 2926/6998 cut-off events. For 8931/8944 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 52833 event pairs, 1027 based on Foata normal form. 72/6913 useless extension candidates. Maximal degree in co-relation 17207. Up to 3006 conditions per place. [2023-08-26 08:59:53,237 INFO L140 encePairwiseOnDemand]: 879/888 looper letters, 125 selfloop transitions, 15 changer transitions 0/200 dead transitions. [2023-08-26 08:59:53,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 200 transitions, 1152 flow [2023-08-26 08:59:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:59:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:59:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2032 transitions. [2023-08-26 08:59:53,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45765765765765765 [2023-08-26 08:59:53,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2032 transitions. [2023-08-26 08:59:53,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2032 transitions. [2023-08-26 08:59:53,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:53,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2032 transitions. [2023-08-26 08:59:53,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 406.4) internal successors, (2032), 5 states have internal predecessors, (2032), 0 states have call successors, (0), 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 08:59:53,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:53,250 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 08:59:53,250 INFO L175 Difference]: Start difference. First operand has 173 places, 156 transitions, 667 flow. Second operand 5 states and 2032 transitions. [2023-08-26 08:59:53,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 200 transitions, 1152 flow [2023-08-26 08:59:53,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 200 transitions, 1127 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-26 08:59:53,278 INFO L231 Difference]: Finished difference. Result has 176 places, 155 transitions, 692 flow [2023-08-26 08:59:53,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=692, PETRI_PLACES=176, PETRI_TRANSITIONS=155} [2023-08-26 08:59:53,278 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 2 predicate places. [2023-08-26 08:59:53,278 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 155 transitions, 692 flow [2023-08-26 08:59:53,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 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 08:59:53,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:53,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:53,283 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 08:59:53,479 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,SelfDestructingSolverStorable26 [2023-08-26 08:59:53,479 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:53,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:53,480 INFO L85 PathProgramCache]: Analyzing trace with hash 61424340, now seen corresponding path program 1 times [2023-08-26 08:59:53,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:53,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825790885] [2023-08-26 08:59:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:53,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:53,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:53,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825790885] [2023-08-26 08:59:53,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825790885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:53,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158165253] [2023-08-26 08:59:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:53,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:53,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:53,694 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 08:59:53,697 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 08:59:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:53,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 08:59:53,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:54,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:59:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158165253] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:54,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 08:59:54,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-08-26 08:59:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598980714] [2023-08-26 08:59:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 08:59:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 08:59:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-26 08:59:54,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 888 [2023-08-26 08:59:54,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 155 transitions, 692 flow. Second operand has 7 states, 7 states have (on average 404.57142857142856) internal successors, (2832), 7 states have internal predecessors, (2832), 0 states have call successors, (0), 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 08:59:54,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:54,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 888 [2023-08-26 08:59:54,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:54,954 INFO L124 PetriNetUnfolderBase]: 1933/5546 cut-off events. [2023-08-26 08:59:54,954 INFO L125 PetriNetUnfolderBase]: For 7787/7820 co-relation queries the response was YES. [2023-08-26 08:59:54,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13420 conditions, 5546 events. 1933/5546 cut-off events. For 7787/7820 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 44707 event pairs, 1359 based on Foata normal form. 4/5460 useless extension candidates. Maximal degree in co-relation 13389. Up to 2913 conditions per place. [2023-08-26 08:59:54,993 INFO L140 encePairwiseOnDemand]: 881/888 looper letters, 98 selfloop transitions, 5 changer transitions 14/192 dead transitions. [2023-08-26 08:59:54,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 192 transitions, 1077 flow [2023-08-26 08:59:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 08:59:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 08:59:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2897 transitions. [2023-08-26 08:59:54,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660553410553411 [2023-08-26 08:59:54,997 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2897 transitions. [2023-08-26 08:59:54,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2897 transitions. [2023-08-26 08:59:54,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:54,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2897 transitions. [2023-08-26 08:59:55,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 413.85714285714283) internal successors, (2897), 7 states have internal predecessors, (2897), 0 states have call successors, (0), 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 08:59:55,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 888.0) internal successors, (7104), 8 states have internal predecessors, (7104), 0 states have call successors, (0), 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 08:59:55,006 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 888.0) internal successors, (7104), 8 states have internal predecessors, (7104), 0 states have call successors, (0), 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 08:59:55,006 INFO L175 Difference]: Start difference. First operand has 176 places, 155 transitions, 692 flow. Second operand 7 states and 2897 transitions. [2023-08-26 08:59:55,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 192 transitions, 1077 flow [2023-08-26 08:59:55,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 192 transitions, 1059 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 08:59:55,027 INFO L231 Difference]: Finished difference. Result has 182 places, 156 transitions, 699 flow [2023-08-26 08:59:55,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=699, PETRI_PLACES=182, PETRI_TRANSITIONS=156} [2023-08-26 08:59:55,028 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 8 predicate places. [2023-08-26 08:59:55,028 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 156 transitions, 699 flow [2023-08-26 08:59:55,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 404.57142857142856) internal successors, (2832), 7 states have internal predecessors, (2832), 0 states have call successors, (0), 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 08:59:55,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:55,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:55,037 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 08:59:55,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:55,235 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:55,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash 102910264, now seen corresponding path program 1 times [2023-08-26 08:59:55,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:55,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129377930] [2023-08-26 08:59:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:55,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:55,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129377930] [2023-08-26 08:59:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129377930] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149623206] [2023-08-26 08:59:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:55,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:55,426 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 08:59:55,451 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 08:59:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:55,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 08:59:55,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:55,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:59:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149623206] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:55,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 08:59:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-08-26 08:59:55,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963980362] [2023-08-26 08:59:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:55,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 08:59:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 08:59:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-08-26 08:59:55,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 888 [2023-08-26 08:59:55,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 156 transitions, 699 flow. Second operand has 8 states, 8 states have (on average 404.125) internal successors, (3233), 8 states have internal predecessors, (3233), 0 states have call successors, (0), 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 08:59:55,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:55,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 888 [2023-08-26 08:59:55,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:56,681 INFO L124 PetriNetUnfolderBase]: 1896/5447 cut-off events. [2023-08-26 08:59:56,682 INFO L125 PetriNetUnfolderBase]: For 7498/7529 co-relation queries the response was YES. [2023-08-26 08:59:56,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13234 conditions, 5447 events. 1896/5447 cut-off events. For 7498/7529 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 43361 event pairs, 1329 based on Foata normal form. 4/5362 useless extension candidates. Maximal degree in co-relation 13201. Up to 2559 conditions per place. [2023-08-26 08:59:56,720 INFO L140 encePairwiseOnDemand]: 880/888 looper letters, 116 selfloop transitions, 7 changer transitions 13/211 dead transitions. [2023-08-26 08:59:56,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 211 transitions, 1191 flow [2023-08-26 08:59:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 08:59:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 08:59:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3321 transitions. [2023-08-26 08:59:56,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674831081081081 [2023-08-26 08:59:56,724 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3321 transitions. [2023-08-26 08:59:56,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3321 transitions. [2023-08-26 08:59:56,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:56,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3321 transitions. [2023-08-26 08:59:56,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 415.125) internal successors, (3321), 8 states have internal predecessors, (3321), 0 states have call successors, (0), 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 08:59:56,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 888.0) internal successors, (7992), 9 states have internal predecessors, (7992), 0 states have call successors, (0), 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 08:59:56,734 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 888.0) internal successors, (7992), 9 states have internal predecessors, (7992), 0 states have call successors, (0), 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 08:59:56,734 INFO L175 Difference]: Start difference. First operand has 182 places, 156 transitions, 699 flow. Second operand 8 states and 3321 transitions. [2023-08-26 08:59:56,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 211 transitions, 1191 flow [2023-08-26 08:59:56,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 211 transitions, 1173 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-26 08:59:56,755 INFO L231 Difference]: Finished difference. Result has 186 places, 157 transitions, 718 flow [2023-08-26 08:59:56,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=718, PETRI_PLACES=186, PETRI_TRANSITIONS=157} [2023-08-26 08:59:56,755 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 12 predicate places. [2023-08-26 08:59:56,755 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 157 transitions, 718 flow [2023-08-26 08:59:56,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 404.125) internal successors, (3233), 8 states have internal predecessors, (3233), 0 states have call successors, (0), 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 08:59:56,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:56,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:56,765 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 08:59:56,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 08:59:56,962 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:56,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1456136380, now seen corresponding path program 2 times [2023-08-26 08:59:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074635341] [2023-08-26 08:59:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:56,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:57,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074635341] [2023-08-26 08:59:57,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074635341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332554887] [2023-08-26 08:59:57,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 08:59:57,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:57,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:57,183 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 08:59:57,186 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 08:59:57,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 08:59:57,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 08:59:57,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-26 08:59:57,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:57,509 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 08:59:57,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 08:59:57,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332554887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:57,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 08:59:57,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-08-26 08:59:57,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933596047] [2023-08-26 08:59:57,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:57,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 08:59:57,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:57,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 08:59:57,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-26 08:59:57,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 888 [2023-08-26 08:59:57,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 157 transitions, 718 flow. Second operand has 8 states, 8 states have (on average 372.125) internal successors, (2977), 8 states have internal predecessors, (2977), 0 states have call successors, (0), 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 08:59:57,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:57,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 888 [2023-08-26 08:59:57,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:59:58,504 INFO L124 PetriNetUnfolderBase]: 2855/6886 cut-off events. [2023-08-26 08:59:58,505 INFO L125 PetriNetUnfolderBase]: For 9950/9988 co-relation queries the response was YES. [2023-08-26 08:59:58,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17574 conditions, 6886 events. 2855/6886 cut-off events. For 9950/9988 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 52579 event pairs, 2037 based on Foata normal form. 1/6767 useless extension candidates. Maximal degree in co-relation 17540. Up to 4515 conditions per place. [2023-08-26 08:59:58,560 INFO L140 encePairwiseOnDemand]: 878/888 looper letters, 85 selfloop transitions, 2 changer transitions 54/201 dead transitions. [2023-08-26 08:59:58,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 201 transitions, 1190 flow [2023-08-26 08:59:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 08:59:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 08:59:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3805 transitions. [2023-08-26 08:59:58,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42849099099099097 [2023-08-26 08:59:58,564 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3805 transitions. [2023-08-26 08:59:58,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3805 transitions. [2023-08-26 08:59:58,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:59:58,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3805 transitions. [2023-08-26 08:59:58,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.5) internal successors, (3805), 10 states have internal predecessors, (3805), 0 states have call successors, (0), 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 08:59:58,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 888.0) internal successors, (9768), 11 states have internal predecessors, (9768), 0 states have call successors, (0), 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 08:59:58,577 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 888.0) internal successors, (9768), 11 states have internal predecessors, (9768), 0 states have call successors, (0), 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 08:59:58,577 INFO L175 Difference]: Start difference. First operand has 186 places, 157 transitions, 718 flow. Second operand 10 states and 3805 transitions. [2023-08-26 08:59:58,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 201 transitions, 1190 flow [2023-08-26 08:59:58,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 201 transitions, 1167 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-26 08:59:58,617 INFO L231 Difference]: Finished difference. Result has 191 places, 147 transitions, 613 flow [2023-08-26 08:59:58,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=613, PETRI_PLACES=191, PETRI_TRANSITIONS=147} [2023-08-26 08:59:58,618 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 17 predicate places. [2023-08-26 08:59:58,618 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 147 transitions, 613 flow [2023-08-26 08:59:58,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 372.125) internal successors, (2977), 8 states have internal predecessors, (2977), 0 states have call successors, (0), 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 08:59:58,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:59:58,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:59:58,629 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 08:59:58,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:58,825 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 08:59:58,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:59:58,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1172122962, now seen corresponding path program 2 times [2023-08-26 08:59:58,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:59:58,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045957101] [2023-08-26 08:59:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:59:58,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:59:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:59:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:59:59,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:59:59,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045957101] [2023-08-26 08:59:59,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045957101] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:59:59,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641572115] [2023-08-26 08:59:59,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 08:59:59,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:59:59,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:59:59,037 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 08:59:59,040 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 08:59:59,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 08:59:59,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 08:59:59,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 08:59:59,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:59:59,399 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 08:59:59,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 08:59:59,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641572115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:59:59,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 08:59:59,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-08-26 08:59:59,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297909190] [2023-08-26 08:59:59,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:59:59,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 08:59:59,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:59:59,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 08:59:59,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-26 08:59:59,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 888 [2023-08-26 08:59:59,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 147 transitions, 613 flow. Second operand has 8 states, 8 states have (on average 372.125) internal successors, (2977), 8 states have internal predecessors, (2977), 0 states have call successors, (0), 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 08:59:59,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:59:59,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 888 [2023-08-26 08:59:59,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:00,262 INFO L124 PetriNetUnfolderBase]: 3314/7377 cut-off events. [2023-08-26 09:00:00,262 INFO L125 PetriNetUnfolderBase]: For 9767/9789 co-relation queries the response was YES. [2023-08-26 09:00:00,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18752 conditions, 7377 events. 3314/7377 cut-off events. For 9767/9789 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 54058 event pairs, 2549 based on Foata normal form. 9/7313 useless extension candidates. Maximal degree in co-relation 18718. Up to 5185 conditions per place. [2023-08-26 09:00:00,316 INFO L140 encePairwiseOnDemand]: 879/888 looper letters, 116 selfloop transitions, 7 changer transitions 26/202 dead transitions. [2023-08-26 09:00:00,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 202 transitions, 1140 flow [2023-08-26 09:00:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:00:00,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:00:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3822 transitions. [2023-08-26 09:00:00,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304054054054054 [2023-08-26 09:00:00,320 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3822 transitions. [2023-08-26 09:00:00,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3822 transitions. [2023-08-26 09:00:00,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:00,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3822 transitions. [2023-08-26 09:00:00,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 382.2) internal successors, (3822), 10 states have internal predecessors, (3822), 0 states have call successors, (0), 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 09:00:00,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 888.0) internal successors, (9768), 11 states have internal predecessors, (9768), 0 states have call successors, (0), 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 09:00:00,330 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 888.0) internal successors, (9768), 11 states have internal predecessors, (9768), 0 states have call successors, (0), 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 09:00:00,330 INFO L175 Difference]: Start difference. First operand has 191 places, 147 transitions, 613 flow. Second operand 10 states and 3822 transitions. [2023-08-26 09:00:00,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 202 transitions, 1140 flow [2023-08-26 09:00:00,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 202 transitions, 1098 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-08-26 09:00:00,361 INFO L231 Difference]: Finished difference. Result has 180 places, 148 transitions, 617 flow [2023-08-26 09:00:00,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=617, PETRI_PLACES=180, PETRI_TRANSITIONS=148} [2023-08-26 09:00:00,362 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 6 predicate places. [2023-08-26 09:00:00,362 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 148 transitions, 617 flow [2023-08-26 09:00:00,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 372.125) internal successors, (2977), 8 states have internal predecessors, (2977), 0 states have call successors, (0), 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 09:00:00,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:00,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:00,368 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 09:00:00,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:00,563 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 09:00:00,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1284320360, now seen corresponding path program 3 times [2023-08-26 09:00:00,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:00,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442266778] [2023-08-26 09:00:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:00,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:00,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:00,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442266778] [2023-08-26 09:00:00,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442266778] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:00,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317220992] [2023-08-26 09:00:00,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:00:00,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:00,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:00,762 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 09:00:00,793 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 09:00:00,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-26 09:00:00,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:00,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:00:00,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:01,128 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 09:00:01,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 09:00:01,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317220992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:00:01,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 09:00:01,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-08-26 09:00:01,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772335136] [2023-08-26 09:00:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:00:01,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 09:00:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 09:00:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-08-26 09:00:01,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 888 [2023-08-26 09:00:01,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 148 transitions, 617 flow. Second operand has 8 states, 8 states have (on average 372.125) internal successors, (2977), 8 states have internal predecessors, (2977), 0 states have call successors, (0), 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 09:00:01,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:01,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 888 [2023-08-26 09:00:01,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:02,089 INFO L124 PetriNetUnfolderBase]: 3307/7396 cut-off events. [2023-08-26 09:00:02,089 INFO L125 PetriNetUnfolderBase]: For 8671/8693 co-relation queries the response was YES. [2023-08-26 09:00:02,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18265 conditions, 7396 events. 3307/7396 cut-off events. For 8671/8693 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 54303 event pairs, 2594 based on Foata normal form. 9/7330 useless extension candidates. Maximal degree in co-relation 18234. Up to 5185 conditions per place. [2023-08-26 09:00:02,148 INFO L140 encePairwiseOnDemand]: 879/888 looper letters, 107 selfloop transitions, 5 changer transitions 22/187 dead transitions. [2023-08-26 09:00:02,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 187 transitions, 1055 flow [2023-08-26 09:00:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:00:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:00:02,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3437 transitions. [2023-08-26 09:00:02,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43005505505505504 [2023-08-26 09:00:02,152 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3437 transitions. [2023-08-26 09:00:02,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3437 transitions. [2023-08-26 09:00:02,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:02,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3437 transitions. [2023-08-26 09:00:02,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 381.8888888888889) internal successors, (3437), 9 states have internal predecessors, (3437), 0 states have call successors, (0), 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 09:00:02,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 888.0) internal successors, (8880), 10 states have internal predecessors, (8880), 0 states have call successors, (0), 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 09:00:02,162 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 888.0) internal successors, (8880), 10 states have internal predecessors, (8880), 0 states have call successors, (0), 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 09:00:02,162 INFO L175 Difference]: Start difference. First operand has 180 places, 148 transitions, 617 flow. Second operand 9 states and 3437 transitions. [2023-08-26 09:00:02,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 187 transitions, 1055 flow [2023-08-26 09:00:02,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 187 transitions, 1029 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-26 09:00:02,189 INFO L231 Difference]: Finished difference. Result has 183 places, 146 transitions, 596 flow [2023-08-26 09:00:02,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=596, PETRI_PLACES=183, PETRI_TRANSITIONS=146} [2023-08-26 09:00:02,189 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 9 predicate places. [2023-08-26 09:00:02,189 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 146 transitions, 596 flow [2023-08-26 09:00:02,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 372.125) internal successors, (2977), 8 states have internal predecessors, (2977), 0 states have call successors, (0), 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 09:00:02,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:02,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:02,196 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 09:00:02,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:02,395 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 09:00:02,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:02,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1340670732, now seen corresponding path program 4 times [2023-08-26 09:00:02,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27691299] [2023-08-26 09:00:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:02,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:00:02,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:02,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27691299] [2023-08-26 09:00:02,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27691299] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954278338] [2023-08-26 09:00:02,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:00:02,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:02,605 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 09:00:02,629 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 09:00:02,782 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:00:02,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:02,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 09:00:02,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:02,919 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 09:00:02,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 09:00:02,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954278338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:00:02,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 09:00:02,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2023-08-26 09:00:02,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836000494] [2023-08-26 09:00:02,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:00:02,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 09:00:02,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 09:00:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:00:02,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 888 [2023-08-26 09:00:02,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 146 transitions, 596 flow. Second operand has 8 states, 8 states have (on average 376.125) internal successors, (3009), 8 states have internal predecessors, (3009), 0 states have call successors, (0), 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 09:00:02,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:02,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 888 [2023-08-26 09:00:02,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:04,837 INFO L124 PetriNetUnfolderBase]: 8283/15618 cut-off events. [2023-08-26 09:00:04,837 INFO L125 PetriNetUnfolderBase]: For 13269/13278 co-relation queries the response was YES. [2023-08-26 09:00:04,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38061 conditions, 15618 events. 8283/15618 cut-off events. For 13269/13278 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 106067 event pairs, 4904 based on Foata normal form. 3/15570 useless extension candidates. Maximal degree in co-relation 38028. Up to 7997 conditions per place. [2023-08-26 09:00:04,992 INFO L140 encePairwiseOnDemand]: 877/888 looper letters, 164 selfloop transitions, 6 changer transitions 39/247 dead transitions. [2023-08-26 09:00:04,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 247 transitions, 1448 flow [2023-08-26 09:00:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:00:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:00:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3914 transitions. [2023-08-26 09:00:04,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44076576576576576 [2023-08-26 09:00:04,995 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3914 transitions. [2023-08-26 09:00:04,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3914 transitions. [2023-08-26 09:00:04,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:04,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3914 transitions. [2023-08-26 09:00:04,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 391.4) internal successors, (3914), 10 states have internal predecessors, (3914), 0 states have call successors, (0), 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 09:00:05,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 888.0) internal successors, (9768), 11 states have internal predecessors, (9768), 0 states have call successors, (0), 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 09:00:05,003 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 888.0) internal successors, (9768), 11 states have internal predecessors, (9768), 0 states have call successors, (0), 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 09:00:05,004 INFO L175 Difference]: Start difference. First operand has 183 places, 146 transitions, 596 flow. Second operand 10 states and 3914 transitions. [2023-08-26 09:00:05,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 247 transitions, 1448 flow [2023-08-26 09:00:05,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 247 transitions, 1402 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-26 09:00:05,075 INFO L231 Difference]: Finished difference. Result has 183 places, 142 transitions, 570 flow [2023-08-26 09:00:05,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=570, PETRI_PLACES=183, PETRI_TRANSITIONS=142} [2023-08-26 09:00:05,076 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 9 predicate places. [2023-08-26 09:00:05,076 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 142 transitions, 570 flow [2023-08-26 09:00:05,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 376.125) internal successors, (3009), 8 states have internal predecessors, (3009), 0 states have call successors, (0), 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 09:00:05,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:05,077 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, 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 09:00:05,087 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 09:00:05,282 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,SelfDestructingSolverStorable32 [2023-08-26 09:00:05,283 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 09:00:05,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:05,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1964923529, now seen corresponding path program 1 times [2023-08-26 09:00:05,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:05,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823120009] [2023-08-26 09:00:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:05,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:00:05,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823120009] [2023-08-26 09:00:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823120009] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76955609] [2023-08-26 09:00:05,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:05,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:05,417 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 09:00:05,418 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 09:00:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:05,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 09:00:05,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:00:05,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:00:05,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76955609] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:05,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 09:00:05,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-08-26 09:00:05,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404559512] [2023-08-26 09:00:05,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:00:05,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:00:05,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:05,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:00:05,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:00:05,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 888 [2023-08-26 09:00:05,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 142 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 383.5) internal successors, (2301), 6 states have internal predecessors, (2301), 0 states have call successors, (0), 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 09:00:05,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:05,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 888 [2023-08-26 09:00:05,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:07,687 INFO L124 PetriNetUnfolderBase]: 6793/14593 cut-off events. [2023-08-26 09:00:07,688 INFO L125 PetriNetUnfolderBase]: For 18386/18420 co-relation queries the response was YES. [2023-08-26 09:00:07,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35834 conditions, 14593 events. 6793/14593 cut-off events. For 18386/18420 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 117491 event pairs, 4310 based on Foata normal form. 76/14453 useless extension candidates. Maximal degree in co-relation 35802. Up to 6245 conditions per place. [2023-08-26 09:00:07,821 INFO L140 encePairwiseOnDemand]: 879/888 looper letters, 189 selfloop transitions, 12 changer transitions 0/254 dead transitions. [2023-08-26 09:00:07,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 254 transitions, 1526 flow [2023-08-26 09:00:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:00:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:00:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2816 transitions. [2023-08-26 09:00:07,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45302445302445304 [2023-08-26 09:00:07,824 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2816 transitions. [2023-08-26 09:00:07,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2816 transitions. [2023-08-26 09:00:07,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:07,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2816 transitions. [2023-08-26 09:00:07,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 402.2857142857143) internal successors, (2816), 7 states have internal predecessors, (2816), 0 states have call successors, (0), 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 09:00:07,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 888.0) internal successors, (7104), 8 states have internal predecessors, (7104), 0 states have call successors, (0), 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 09:00:07,832 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 888.0) internal successors, (7104), 8 states have internal predecessors, (7104), 0 states have call successors, (0), 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 09:00:07,832 INFO L175 Difference]: Start difference. First operand has 183 places, 142 transitions, 570 flow. Second operand 7 states and 2816 transitions. [2023-08-26 09:00:07,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 254 transitions, 1526 flow [2023-08-26 09:00:07,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 254 transitions, 1426 flow, removed 41 selfloop flow, removed 11 redundant places. [2023-08-26 09:00:07,869 INFO L231 Difference]: Finished difference. Result has 165 places, 147 transitions, 609 flow [2023-08-26 09:00:07,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=609, PETRI_PLACES=165, PETRI_TRANSITIONS=147} [2023-08-26 09:00:07,870 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, -9 predicate places. [2023-08-26 09:00:07,870 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 147 transitions, 609 flow [2023-08-26 09:00:07,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 383.5) internal successors, (2301), 6 states have internal predecessors, (2301), 0 states have call successors, (0), 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 09:00:07,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:07,871 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, 1, 1, 1, 1] [2023-08-26 09:00:07,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:08,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:08,071 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 09:00:08,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash -56032257, now seen corresponding path program 1 times [2023-08-26 09:00:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:08,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096775136] [2023-08-26 09:00:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:08,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:00:08,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096775136] [2023-08-26 09:00:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096775136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738719475] [2023-08-26 09:00:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:08,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:08,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:08,216 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:08,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 09:00:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:08,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 09:00:08,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:00:08,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:08,634 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 09:00:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738719475] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:08,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:08,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-08-26 09:00:08,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865676692] [2023-08-26 09:00:08,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:08,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:00:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:00:08,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:00:08,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 888 [2023-08-26 09:00:08,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 147 transitions, 609 flow. Second operand has 12 states, 12 states have (on average 353.4166666666667) internal successors, (4241), 12 states have internal predecessors, (4241), 0 states have call successors, (0), 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 09:00:08,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:08,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 888 [2023-08-26 09:00:08,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:11,688 INFO L124 PetriNetUnfolderBase]: 12787/23894 cut-off events. [2023-08-26 09:00:11,689 INFO L125 PetriNetUnfolderBase]: For 19928/19954 co-relation queries the response was YES. [2023-08-26 09:00:11,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56637 conditions, 23894 events. 12787/23894 cut-off events. For 19928/19954 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 171700 event pairs, 7280 based on Foata normal form. 142/23936 useless extension candidates. Maximal degree in co-relation 56612. Up to 7100 conditions per place. [2023-08-26 09:00:11,862 INFO L140 encePairwiseOnDemand]: 875/888 looper letters, 399 selfloop transitions, 35 changer transitions 0/472 dead transitions. [2023-08-26 09:00:11,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 472 transitions, 2501 flow [2023-08-26 09:00:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:00:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:00:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4563 transitions. [2023-08-26 09:00:11,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282094594594595 [2023-08-26 09:00:11,866 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4563 transitions. [2023-08-26 09:00:11,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4563 transitions. [2023-08-26 09:00:11,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:11,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4563 transitions. [2023-08-26 09:00:11,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 380.25) internal successors, (4563), 12 states have internal predecessors, (4563), 0 states have call successors, (0), 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 09:00:11,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 888.0) internal successors, (11544), 13 states have internal predecessors, (11544), 0 states have call successors, (0), 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 09:00:11,874 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 888.0) internal successors, (11544), 13 states have internal predecessors, (11544), 0 states have call successors, (0), 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 09:00:11,874 INFO L175 Difference]: Start difference. First operand has 165 places, 147 transitions, 609 flow. Second operand 12 states and 4563 transitions. [2023-08-26 09:00:11,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 472 transitions, 2501 flow [2023-08-26 09:00:11,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 472 transitions, 2480 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-26 09:00:11,913 INFO L231 Difference]: Finished difference. Result has 178 places, 165 transitions, 846 flow [2023-08-26 09:00:11,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=846, PETRI_PLACES=178, PETRI_TRANSITIONS=165} [2023-08-26 09:00:11,914 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 4 predicate places. [2023-08-26 09:00:11,914 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 165 transitions, 846 flow [2023-08-26 09:00:11,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 353.4166666666667) internal successors, (4241), 12 states have internal predecessors, (4241), 0 states have call successors, (0), 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 09:00:11,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:11,915 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, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:11,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:12,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-26 09:00:12,121 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 09:00:12,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:12,122 INFO L85 PathProgramCache]: Analyzing trace with hash -630943794, now seen corresponding path program 1 times [2023-08-26 09:00:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023692560] [2023-08-26 09:00:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:12,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:00:12,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:12,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023692560] [2023-08-26 09:00:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023692560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136561763] [2023-08-26 09:00:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:12,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:12,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:12,605 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:12,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 09:00:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:12,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-26 09:00:12,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 09:00:13,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 09:00:13,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136561763] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:13,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:13,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2023-08-26 09:00:13,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757466935] [2023-08-26 09:00:13,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:13,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:00:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:00:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:00:13,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 888 [2023-08-26 09:00:13,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 165 transitions, 846 flow. Second operand has 19 states, 19 states have (on average 374.94736842105266) internal successors, (7124), 19 states have internal predecessors, (7124), 0 states have call successors, (0), 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 09:00:13,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:13,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 888 [2023-08-26 09:00:13,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:19,530 INFO L124 PetriNetUnfolderBase]: 19943/47487 cut-off events. [2023-08-26 09:00:19,530 INFO L125 PetriNetUnfolderBase]: For 61863/61917 co-relation queries the response was YES. [2023-08-26 09:00:19,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112156 conditions, 47487 events. 19943/47487 cut-off events. For 61863/61917 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 498277 event pairs, 12586 based on Foata normal form. 32/47080 useless extension candidates. Maximal degree in co-relation 112127. Up to 8237 conditions per place. [2023-08-26 09:00:20,012 INFO L140 encePairwiseOnDemand]: 875/888 looper letters, 559 selfloop transitions, 62 changer transitions 6/680 dead transitions. [2023-08-26 09:00:20,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 680 transitions, 4727 flow [2023-08-26 09:00:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:00:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:00:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6020 transitions. [2023-08-26 09:00:20,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519519519519519 [2023-08-26 09:00:20,018 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6020 transitions. [2023-08-26 09:00:20,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6020 transitions. [2023-08-26 09:00:20,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:20,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6020 transitions. [2023-08-26 09:00:20,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 401.3333333333333) internal successors, (6020), 15 states have internal predecessors, (6020), 0 states have call successors, (0), 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 09:00:20,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 888.0) internal successors, (14208), 16 states have internal predecessors, (14208), 0 states have call successors, (0), 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 09:00:20,034 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 888.0) internal successors, (14208), 16 states have internal predecessors, (14208), 0 states have call successors, (0), 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 09:00:20,035 INFO L175 Difference]: Start difference. First operand has 178 places, 165 transitions, 846 flow. Second operand 15 states and 6020 transitions. [2023-08-26 09:00:20,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 680 transitions, 4727 flow [2023-08-26 09:00:20,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 680 transitions, 4546 flow, removed 32 selfloop flow, removed 5 redundant places. [2023-08-26 09:00:20,275 INFO L231 Difference]: Finished difference. Result has 198 places, 216 transitions, 1564 flow [2023-08-26 09:00:20,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1564, PETRI_PLACES=198, PETRI_TRANSITIONS=216} [2023-08-26 09:00:20,276 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 24 predicate places. [2023-08-26 09:00:20,276 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 216 transitions, 1564 flow [2023-08-26 09:00:20,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 374.94736842105266) internal successors, (7124), 19 states have internal predecessors, (7124), 0 states have call successors, (0), 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 09:00:20,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:20,277 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:20,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:20,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-26 09:00:20,478 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 09:00:20,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:20,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1698327556, now seen corresponding path program 2 times [2023-08-26 09:00:20,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:20,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681889973] [2023-08-26 09:00:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:20,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:00:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:20,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681889973] [2023-08-26 09:00:20,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681889973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:20,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764281310] [2023-08-26 09:00:20,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:00:20,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:20,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:20,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:20,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 09:00:20,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 09:00:20,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:20,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 09:00:20,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 09:00:20,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 09:00:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764281310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:00:20,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 09:00:20,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-08-26 09:00:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762124993] [2023-08-26 09:00:20,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:00:20,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 09:00:20,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:20,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 09:00:20,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-26 09:00:20,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 888 [2023-08-26 09:00:20,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 216 transitions, 1564 flow. Second operand has 4 states, 4 states have (on average 445.75) internal successors, (1783), 4 states have internal predecessors, (1783), 0 states have call successors, (0), 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 09:00:20,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:20,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 888 [2023-08-26 09:00:20,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:23,844 INFO L124 PetriNetUnfolderBase]: 7517/22263 cut-off events. [2023-08-26 09:00:23,844 INFO L125 PetriNetUnfolderBase]: For 40787/40994 co-relation queries the response was YES. [2023-08-26 09:00:23,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55569 conditions, 22263 events. 7517/22263 cut-off events. For 40787/40994 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 240437 event pairs, 3327 based on Foata normal form. 85/22096 useless extension candidates. Maximal degree in co-relation 55530. Up to 7351 conditions per place. [2023-08-26 09:00:24,021 INFO L140 encePairwiseOnDemand]: 881/888 looper letters, 171 selfloop transitions, 37 changer transitions 10/293 dead transitions. [2023-08-26 09:00:24,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 293 transitions, 2437 flow [2023-08-26 09:00:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:00:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:00:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2295 transitions. [2023-08-26 09:00:24,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2023-08-26 09:00:24,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2295 transitions. [2023-08-26 09:00:24,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2295 transitions. [2023-08-26 09:00:24,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:24,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2295 transitions. [2023-08-26 09:00:24,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 459.0) internal successors, (2295), 5 states have internal predecessors, (2295), 0 states have call successors, (0), 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 09:00:24,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 09:00:24,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 09:00:24,028 INFO L175 Difference]: Start difference. First operand has 198 places, 216 transitions, 1564 flow. Second operand 5 states and 2295 transitions. [2023-08-26 09:00:24,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 293 transitions, 2437 flow [2023-08-26 09:00:24,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 293 transitions, 2364 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-26 09:00:24,144 INFO L231 Difference]: Finished difference. Result has 201 places, 216 transitions, 1588 flow [2023-08-26 09:00:24,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1588, PETRI_PLACES=201, PETRI_TRANSITIONS=216} [2023-08-26 09:00:24,145 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 27 predicate places. [2023-08-26 09:00:24,145 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 216 transitions, 1588 flow [2023-08-26 09:00:24,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 445.75) internal successors, (1783), 4 states have internal predecessors, (1783), 0 states have call successors, (0), 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 09:00:24,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:24,145 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:00:24,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:24,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-26 09:00:24,347 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 09:00:24,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1090789831, now seen corresponding path program 3 times [2023-08-26 09:00:24,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:24,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133440109] [2023-08-26 09:00:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:24,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:00:24,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133440109] [2023-08-26 09:00:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133440109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:24,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82365834] [2023-08-26 09:00:24,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:00:24,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:24,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:24,549 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:24,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 09:00:24,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-26 09:00:24,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:00:24,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 09:00:24,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 09:00:24,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 09:00:24,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82365834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:00:24,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 09:00:24,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2023-08-26 09:00:24,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764962080] [2023-08-26 09:00:24,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:00:24,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 09:00:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 09:00:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-26 09:00:24,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 888 [2023-08-26 09:00:24,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 216 transitions, 1588 flow. Second operand has 4 states, 4 states have (on average 445.75) internal successors, (1783), 4 states have internal predecessors, (1783), 0 states have call successors, (0), 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 09:00:24,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:24,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 888 [2023-08-26 09:00:24,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:00:27,969 INFO L124 PetriNetUnfolderBase]: 7531/22381 cut-off events. [2023-08-26 09:00:27,970 INFO L125 PetriNetUnfolderBase]: For 44271/44450 co-relation queries the response was YES. [2023-08-26 09:00:28,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56461 conditions, 22381 events. 7531/22381 cut-off events. For 44271/44450 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 242586 event pairs, 3351 based on Foata normal form. 81/22210 useless extension candidates. Maximal degree in co-relation 56421. Up to 7351 conditions per place. [2023-08-26 09:00:28,177 INFO L140 encePairwiseOnDemand]: 881/888 looper letters, 164 selfloop transitions, 38 changer transitions 10/287 dead transitions. [2023-08-26 09:00:28,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 287 transitions, 2446 flow [2023-08-26 09:00:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:00:28,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:00:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2289 transitions. [2023-08-26 09:00:28,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155405405405405 [2023-08-26 09:00:28,180 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2289 transitions. [2023-08-26 09:00:28,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2289 transitions. [2023-08-26 09:00:28,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:00:28,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2289 transitions. [2023-08-26 09:00:28,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 457.8) internal successors, (2289), 5 states have internal predecessors, (2289), 0 states have call successors, (0), 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 09:00:28,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 09:00:28,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 888.0) internal successors, (5328), 6 states have internal predecessors, (5328), 0 states have call successors, (0), 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 09:00:28,184 INFO L175 Difference]: Start difference. First operand has 201 places, 216 transitions, 1588 flow. Second operand 5 states and 2289 transitions. [2023-08-26 09:00:28,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 287 transitions, 2446 flow [2023-08-26 09:00:28,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 287 transitions, 2407 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 09:00:28,329 INFO L231 Difference]: Finished difference. Result has 204 places, 216 transitions, 1639 flow [2023-08-26 09:00:28,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=888, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1639, PETRI_PLACES=204, PETRI_TRANSITIONS=216} [2023-08-26 09:00:28,330 INFO L281 CegarLoopForPetriNet]: 174 programPoint places, 30 predicate places. [2023-08-26 09:00:28,330 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 216 transitions, 1639 flow [2023-08-26 09:00:28,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 445.75) internal successors, (1783), 4 states have internal predecessors, (1783), 0 states have call successors, (0), 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 09:00:28,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:00:28,331 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, 1, 1, 1, 1, 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 09:00:28,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 09:00:28,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-26 09:00:28,532 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 93 more)] === [2023-08-26 09:00:28,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:00:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -3058521, now seen corresponding path program 1 times [2023-08-26 09:00:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:00:28,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139934179] [2023-08-26 09:00:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:00:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:00:29,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:00:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139934179] [2023-08-26 09:00:29,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139934179] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:00:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086688621] [2023-08-26 09:00:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:00:29,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:00:29,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:00:29,405 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:00:29,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 09:00:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:00:29,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-26 09:00:29,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:00:29,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 09:00:29,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 09:00:29,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 09:00:30,194 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 09:00:30,195 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 26 treesize of output 10 [2023-08-26 09:00:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:00:30,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:00:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:00:30,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086688621] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:00:30,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:00:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 10] total 27 [2023-08-26 09:00:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086192281] [2023-08-26 09:00:30,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:00:30,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 09:00:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:00:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 09:00:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=586, Unknown=13, NotChecked=0, Total=702 [2023-08-26 09:00:30,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 888 [2023-08-26 09:00:30,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 216 transitions, 1639 flow. Second operand has 27 states, 27 states have (on average 322.14814814814815) internal successors, (8698), 27 states have internal predecessors, (8698), 0 states have call successors, (0), 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 09:00:30,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:00:30,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 888 [2023-08-26 09:00:30,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand