/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 INSUFFICIENT_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/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 19:40:50,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 19:40:50,825 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 [2023-08-25 19:40:50,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 19:40:50,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 19:40:50,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 19:40:50,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 19:40:50,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 19:40:50,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 19:40:50,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 19:40:50,871 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 19:40:50,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 19:40:50,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 19:40:50,873 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 19:40:50,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 19:40:50,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 19:40:50,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 19:40:50,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 19:40:50,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 19:40:50,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 19:40:50,875 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 19:40:50,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 19:40:50,875 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 19:40:50,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 19:40:50,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 19:40:50,876 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 19:40:50,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 19:40:50,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:40:50,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 19:40:50,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 19:40:50,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 19:40:50,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 19:40:50,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 19:40:50,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 19:40:50,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 19:40:50,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 19:40:51,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 19:40:51,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 19:40:51,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 19:40:51,227 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 19:40:51,227 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 19:40:51,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2023-08-25 19:40:52,322 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 19:40:52,508 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 19:40:52,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2023-08-25 19:40:52,514 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db590507a/177857f9fc894867889e82caa53f5811/FLAG6eda18981 [2023-08-25 19:40:52,525 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db590507a/177857f9fc894867889e82caa53f5811 [2023-08-25 19:40:52,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 19:40:52,528 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 19:40:52,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 19:40:52,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 19:40:52,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 19:40:52,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65671444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52, skipping insertion in model container [2023-08-25 19:40:52,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,558 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 19:40:52,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:40:52,780 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 19:40:52,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:40:52,838 INFO L206 MainTranslator]: Completed translation [2023-08-25 19:40:52,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52 WrapperNode [2023-08-25 19:40:52,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 19:40:52,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 19:40:52,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 19:40:52,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 19:40:52,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,913 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 529 [2023-08-25 19:40:52,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 19:40:52,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 19:40:52,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 19:40:52,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 19:40:52,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 19:40:52,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 19:40:52,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 19:40:52,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 19:40:52,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (1/1) ... [2023-08-25 19:40:52,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:40:53,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:40:53,018 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) [2023-08-25 19:40:53,028 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 [2023-08-25 19:40:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 19:40:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 19:40:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 19:40:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 19:40:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 19:40:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 19:40:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 19:40:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 19:40:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 19:40:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 19:40:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 19:40:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 19:40:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 19:40:53,056 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 19:40:53,163 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 19:40:53,164 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 19:40:53,883 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 19:40:53,896 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 19:40:53,896 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 19:40:53,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:40:53 BoogieIcfgContainer [2023-08-25 19:40:53,899 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 19:40:53,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 19:40:53,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 19:40:53,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 19:40:53,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:40:52" (1/3) ... [2023-08-25 19:40:53,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221f2381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:40:53, skipping insertion in model container [2023-08-25 19:40:53,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:40:52" (2/3) ... [2023-08-25 19:40:53,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221f2381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:40:53, skipping insertion in model container [2023-08-25 19:40:53,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:40:53" (3/3) ... [2023-08-25 19:40:53,905 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2023-08-25 19:40:53,918 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 19:40:53,918 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-08-25 19:40:53,918 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 19:40:54,057 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 19:40:54,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 667 transitions, 1350 flow [2023-08-25 19:40:54,351 INFO L124 PetriNetUnfolderBase]: 33/665 cut-off events. [2023-08-25 19:40:54,351 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 19:40:54,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 665 events. 33/665 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1742 event pairs, 0 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 426. Up to 2 conditions per place. [2023-08-25 19:40:54,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 641 places, 667 transitions, 1350 flow [2023-08-25 19:40:54,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 630 places, 656 transitions, 1324 flow [2023-08-25 19:40:54,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 19:40:54,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 630 places, 656 transitions, 1324 flow [2023-08-25 19:40:54,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 630 places, 656 transitions, 1324 flow [2023-08-25 19:40:54,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 630 places, 656 transitions, 1324 flow [2023-08-25 19:40:54,573 INFO L124 PetriNetUnfolderBase]: 33/656 cut-off events. [2023-08-25 19:40:54,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 19:40:54,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 656 events. 33/656 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1738 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 426. Up to 2 conditions per place. [2023-08-25 19:40:54,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 90620 [2023-08-25 19:41:09,513 INFO L134 LiptonReduction]: Checked pairs total: 219930 [2023-08-25 19:41:09,514 INFO L136 LiptonReduction]: Total number of compositions: 782 [2023-08-25 19:41:09,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 19:41:09,529 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;@3064a0e4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 19:41:09,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 126 error locations. [2023-08-25 19:41:09,531 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 19:41:09,531 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 19:41:09,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:41:09,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:09,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 19:41:09,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:09,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2620, now seen corresponding path program 1 times [2023-08-25 19:41:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:09,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859750978] [2023-08-25 19:41:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859750978] [2023-08-25 19:41:09,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859750978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:09,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 19:41:09,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43963141] [2023-08-25 19:41:09,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:09,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 19:41:09,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:09,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 19:41:09,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 19:41:09,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 639 out of 1449 [2023-08-25 19:41:09,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 320 flow. Second operand has 2 states, 2 states have (on average 639.5) internal successors, (1279), 2 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:09,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:09,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 639 of 1449 [2023-08-25 19:41:09,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:09,956 INFO L124 PetriNetUnfolderBase]: 844/2294 cut-off events. [2023-08-25 19:41:09,956 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-08-25 19:41:09,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 2294 events. 844/2294 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 16786 event pairs, 711 based on Foata normal form. 161/2259 useless extension candidates. Maximal degree in co-relation 3476. Up to 1387 conditions per place. [2023-08-25 19:41:09,971 INFO L140 encePairwiseOnDemand]: 1391/1449 looper letters, 44 selfloop transitions, 0 changer transitions 0/96 dead transitions. [2023-08-25 19:41:09,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 292 flow [2023-08-25 19:41:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 19:41:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 19:41:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1380 transitions. [2023-08-25 19:41:09,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-25 19:41:09,987 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1380 transitions. [2023-08-25 19:41:09,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1380 transitions. [2023-08-25 19:41:09,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:09,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1380 transitions. [2023-08-25 19:41:09,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 690.0) internal successors, (1380), 2 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1449.0) internal successors, (4347), 3 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,007 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1449.0) internal successors, (4347), 3 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,009 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 320 flow. Second operand 2 states and 1380 transitions. [2023-08-25 19:41:10,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 292 flow [2023-08-25 19:41:10,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:41:10,015 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 196 flow [2023-08-25 19:41:10,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=196, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2023-08-25 19:41:10,019 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -57 predicate places. [2023-08-25 19:41:10,019 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 196 flow [2023-08-25 19:41:10,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 639.5) internal successors, (1279), 2 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:10,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 19:41:10,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 19:41:10,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:10,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1733395699, now seen corresponding path program 1 times [2023-08-25 19:41:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:10,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799657125] [2023-08-25 19:41:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:10,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:10,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799657125] [2023-08-25 19:41:10,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799657125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:10,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:10,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:41:10,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604831849] [2023-08-25 19:41:10,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:10,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:41:10,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:41:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:41:10,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 627 out of 1449 [2023-08-25 19:41:10,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:10,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 627 of 1449 [2023-08-25 19:41:10,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:10,416 INFO L124 PetriNetUnfolderBase]: 844/2280 cut-off events. [2023-08-25 19:41:10,416 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-25 19:41:10,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3684 conditions, 2280 events. 844/2280 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 16617 event pairs, 711 based on Foata normal form. 0/2084 useless extension candidates. Maximal degree in co-relation 3681. Up to 1386 conditions per place. [2023-08-25 19:41:10,427 INFO L140 encePairwiseOnDemand]: 1446/1449 looper letters, 43 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-25 19:41:10,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 280 flow [2023-08-25 19:41:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:41:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:41:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1927 transitions. [2023-08-25 19:41:10,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44329422590292156 [2023-08-25 19:41:10,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1927 transitions. [2023-08-25 19:41:10,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1927 transitions. [2023-08-25 19:41:10,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:10,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1927 transitions. [2023-08-25 19:41:10,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 642.3333333333334) internal successors, (1927), 3 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,448 INFO L175 Difference]: Start difference. First operand has 95 places, 96 transitions, 196 flow. Second operand 3 states and 1927 transitions. [2023-08-25 19:41:10,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 280 flow [2023-08-25 19:41:10,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:41:10,451 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 194 flow [2023-08-25 19:41:10,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2023-08-25 19:41:10,461 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -57 predicate places. [2023-08-25 19:41:10,462 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 194 flow [2023-08-25 19:41:10,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:10,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 19:41:10,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 19:41:10,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err21ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:10,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:10,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2099331577, now seen corresponding path program 1 times [2023-08-25 19:41:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:10,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16585398] [2023-08-25 19:41:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:10,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:10,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:10,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16585398] [2023-08-25 19:41:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16585398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:10,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:10,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:41:10,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870054521] [2023-08-25 19:41:10,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:10,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:41:10,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:41:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:41:10,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1449 [2023-08-25 19:41:10,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:10,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1449 [2023-08-25 19:41:10,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:10,939 INFO L124 PetriNetUnfolderBase]: 1466/3783 cut-off events. [2023-08-25 19:41:10,939 INFO L125 PetriNetUnfolderBase]: For 7/79 co-relation queries the response was YES. [2023-08-25 19:41:10,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 3783 events. 1466/3783 cut-off events. For 7/79 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 27488 event pairs, 526 based on Foata normal form. 1/3482 useless extension candidates. Maximal degree in co-relation 6177. Up to 1329 conditions per place. [2023-08-25 19:41:10,962 INFO L140 encePairwiseOnDemand]: 1443/1449 looper letters, 72 selfloop transitions, 5 changer transitions 0/126 dead transitions. [2023-08-25 19:41:10,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 126 transitions, 413 flow [2023-08-25 19:41:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:41:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:41:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1932 transitions. [2023-08-25 19:41:10,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-25 19:41:10,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1932 transitions. [2023-08-25 19:41:10,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1932 transitions. [2023-08-25 19:41:10,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:10,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1932 transitions. [2023-08-25 19:41:10,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,981 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 194 flow. Second operand 3 states and 1932 transitions. [2023-08-25 19:41:10,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 126 transitions, 413 flow [2023-08-25 19:41:10,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 19:41:10,986 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 219 flow [2023-08-25 19:41:10,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2023-08-25 19:41:10,987 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -55 predicate places. [2023-08-25 19:41:10,988 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 219 flow [2023-08-25 19:41:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:10,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:10,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 19:41:10,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:10,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash 654788087, now seen corresponding path program 1 times [2023-08-25 19:41:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:10,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395497720] [2023-08-25 19:41:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:11,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:11,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395497720] [2023-08-25 19:41:11,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395497720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:11,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:11,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:41:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730876406] [2023-08-25 19:41:11,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:11,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:41:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:41:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:41:11,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1449 [2023-08-25 19:41:11,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:11,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:11,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1449 [2023-08-25 19:41:11,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:11,473 INFO L124 PetriNetUnfolderBase]: 1561/3764 cut-off events. [2023-08-25 19:41:11,473 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-25 19:41:11,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6665 conditions, 3764 events. 1561/3764 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26373 event pairs, 504 based on Foata normal form. 0/3591 useless extension candidates. Maximal degree in co-relation 6660. Up to 2388 conditions per place. [2023-08-25 19:41:11,497 INFO L140 encePairwiseOnDemand]: 1441/1449 looper letters, 61 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-25 19:41:11,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 380 flow [2023-08-25 19:41:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:41:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:41:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1921 transitions. [2023-08-25 19:41:11,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419139636530941 [2023-08-25 19:41:11,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1921 transitions. [2023-08-25 19:41:11,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1921 transitions. [2023-08-25 19:41:11,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:11,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1921 transitions. [2023-08-25 19:41:11,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 640.3333333333334) internal successors, (1921), 3 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:11,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:11,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:11,517 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 219 flow. Second operand 3 states and 1921 transitions. [2023-08-25 19:41:11,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 106 transitions, 380 flow [2023-08-25 19:41:11,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 106 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 19:41:11,522 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 211 flow [2023-08-25 19:41:11,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2023-08-25 19:41:11,524 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -60 predicate places. [2023-08-25 19:41:11,525 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 211 flow [2023-08-25 19:41:11,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:11,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:11,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:11,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 19:41:11,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err21ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:11,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1079369827, now seen corresponding path program 1 times [2023-08-25 19:41:11,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332571568] [2023-08-25 19:41:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:11,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:11,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332571568] [2023-08-25 19:41:11,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332571568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:11,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:11,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:41:11,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808343277] [2023-08-25 19:41:11,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:11,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:41:11,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:11,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:41:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:41:11,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1449 [2023-08-25 19:41:11,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:11,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:11,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1449 [2023-08-25 19:41:11,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:12,155 INFO L124 PetriNetUnfolderBase]: 2621/5746 cut-off events. [2023-08-25 19:41:12,155 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2023-08-25 19:41:12,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10572 conditions, 5746 events. 2621/5746 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 40125 event pairs, 940 based on Foata normal form. 0/5417 useless extension candidates. Maximal degree in co-relation 10567. Up to 2344 conditions per place. [2023-08-25 19:41:12,181 INFO L140 encePairwiseOnDemand]: 1443/1449 looper letters, 78 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2023-08-25 19:41:12,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 124 transitions, 461 flow [2023-08-25 19:41:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:41:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:41:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1931 transitions. [2023-08-25 19:41:12,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442144007361399 [2023-08-25 19:41:12,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1931 transitions. [2023-08-25 19:41:12,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1931 transitions. [2023-08-25 19:41:12,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:12,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1931 transitions. [2023-08-25 19:41:12,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 643.6666666666666) internal successors, (1931), 3 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,198 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 211 flow. Second operand 3 states and 1931 transitions. [2023-08-25 19:41:12,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 124 transitions, 461 flow [2023-08-25 19:41:12,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:41:12,201 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 237 flow [2023-08-25 19:41:12,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2023-08-25 19:41:12,202 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -57 predicate places. [2023-08-25 19:41:12,202 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 237 flow [2023-08-25 19:41:12,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:12,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:12,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 19:41:12,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:12,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2073497370, now seen corresponding path program 1 times [2023-08-25 19:41:12,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:12,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522182917] [2023-08-25 19:41:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522182917] [2023-08-25 19:41:12,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522182917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:12,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:12,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:41:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248187025] [2023-08-25 19:41:12,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:12,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:41:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:12,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:41:12,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:41:12,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 579 out of 1449 [2023-08-25 19:41:12,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 580.6666666666666) internal successors, (3484), 6 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:12,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 579 of 1449 [2023-08-25 19:41:12,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:15,936 INFO L124 PetriNetUnfolderBase]: 28401/43331 cut-off events. [2023-08-25 19:41:15,936 INFO L125 PetriNetUnfolderBase]: For 5825/5825 co-relation queries the response was YES. [2023-08-25 19:41:16,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91904 conditions, 43331 events. 28401/43331 cut-off events. For 5825/5825 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 286515 event pairs, 2334 based on Foata normal form. 0/40319 useless extension candidates. Maximal degree in co-relation 91897. Up to 15611 conditions per place. [2023-08-25 19:41:16,174 INFO L140 encePairwiseOnDemand]: 1444/1449 looper letters, 346 selfloop transitions, 4 changer transitions 0/355 dead transitions. [2023-08-25 19:41:16,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 355 transitions, 1607 flow [2023-08-25 19:41:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:41:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:41:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3795 transitions. [2023-08-25 19:41:16,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2023-08-25 19:41:16,185 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3795 transitions. [2023-08-25 19:41:16,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3795 transitions. [2023-08-25 19:41:16,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:16,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3795 transitions. [2023-08-25 19:41:16,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 632.5) internal successors, (3795), 6 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:16,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:16,208 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:16,208 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 237 flow. Second operand 6 states and 3795 transitions. [2023-08-25 19:41:16,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 355 transitions, 1607 flow [2023-08-25 19:41:16,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 355 transitions, 1573 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 19:41:16,226 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 233 flow [2023-08-25 19:41:16,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2023-08-25 19:41:16,228 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -55 predicate places. [2023-08-25 19:41:16,228 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 233 flow [2023-08-25 19:41:16,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 580.6666666666666) internal successors, (3484), 6 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:16,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:16,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:16,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 19:41:16,230 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:16,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:16,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1929450043, now seen corresponding path program 1 times [2023-08-25 19:41:16,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:16,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271540112] [2023-08-25 19:41:16,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:16,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:16,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:16,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271540112] [2023-08-25 19:41:16,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271540112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:16,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:16,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 19:41:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147580435] [2023-08-25 19:41:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:16,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 19:41:16,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 19:41:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 19:41:16,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1449 [2023-08-25 19:41:16,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 591.25) internal successors, (2365), 4 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:16,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:16,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1449 [2023-08-25 19:41:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:17,077 INFO L124 PetriNetUnfolderBase]: 5332/10313 cut-off events. [2023-08-25 19:41:17,077 INFO L125 PetriNetUnfolderBase]: For 2438/2438 co-relation queries the response was YES. [2023-08-25 19:41:17,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21959 conditions, 10313 events. 5332/10313 cut-off events. For 2438/2438 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 69728 event pairs, 4529 based on Foata normal form. 68/10049 useless extension candidates. Maximal degree in co-relation 21952. Up to 7708 conditions per place. [2023-08-25 19:41:17,124 INFO L140 encePairwiseOnDemand]: 1444/1449 looper letters, 91 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2023-08-25 19:41:17,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 120 transitions, 508 flow [2023-08-25 19:41:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 19:41:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 19:41:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2440 transitions. [2023-08-25 19:41:17,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209799861973775 [2023-08-25 19:41:17,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2440 transitions. [2023-08-25 19:41:17,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2440 transitions. [2023-08-25 19:41:17,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:17,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2440 transitions. [2023-08-25 19:41:17,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 610.0) internal successors, (2440), 4 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1449.0) internal successors, (7245), 5 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,143 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1449.0) internal successors, (7245), 5 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,143 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 233 flow. Second operand 4 states and 2440 transitions. [2023-08-25 19:41:17,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 120 transitions, 508 flow [2023-08-25 19:41:17,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 120 transitions, 499 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:41:17,150 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 266 flow [2023-08-25 19:41:17,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2023-08-25 19:41:17,150 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -53 predicate places. [2023-08-25 19:41:17,151 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 266 flow [2023-08-25 19:41:17,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 591.25) internal successors, (2365), 4 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:17,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:17,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 19:41:17,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:17,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash 977430780, now seen corresponding path program 1 times [2023-08-25 19:41:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473758261] [2023-08-25 19:41:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:17,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473758261] [2023-08-25 19:41:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473758261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:17,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:17,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:41:17,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212598129] [2023-08-25 19:41:17,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:17,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:41:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:17,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:41:17,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:41:17,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1449 [2023-08-25 19:41:17,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 572.3333333333334) internal successors, (3434), 6 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:17,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1449 [2023-08-25 19:41:17,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:20,556 INFO L124 PetriNetUnfolderBase]: 28157/43902 cut-off events. [2023-08-25 19:41:20,556 INFO L125 PetriNetUnfolderBase]: For 7054/7054 co-relation queries the response was YES. [2023-08-25 19:41:20,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95804 conditions, 43902 events. 28157/43902 cut-off events. For 7054/7054 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 281637 event pairs, 7166 based on Foata normal form. 0/42554 useless extension candidates. Maximal degree in co-relation 95795. Up to 24412 conditions per place. [2023-08-25 19:41:20,797 INFO L140 encePairwiseOnDemand]: 1441/1449 looper letters, 271 selfloop transitions, 5 changer transitions 0/279 dead transitions. [2023-08-25 19:41:20,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 279 transitions, 1300 flow [2023-08-25 19:41:20,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:41:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:41:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3678 transitions. [2023-08-25 19:41:20,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230503795721187 [2023-08-25 19:41:20,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3678 transitions. [2023-08-25 19:41:20,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3678 transitions. [2023-08-25 19:41:20,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:20,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3678 transitions. [2023-08-25 19:41:20,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 613.0) internal successors, (3678), 6 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:20,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:20,828 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:20,829 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 266 flow. Second operand 6 states and 3678 transitions. [2023-08-25 19:41:20,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 279 transitions, 1300 flow [2023-08-25 19:41:20,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 279 transitions, 1298 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 19:41:20,836 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 268 flow [2023-08-25 19:41:20,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2023-08-25 19:41:20,839 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -51 predicate places. [2023-08-25 19:41:20,839 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 268 flow [2023-08-25 19:41:20,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 572.3333333333334) internal successors, (3434), 6 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:20,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:20,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:20,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 19:41:20,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:20,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:20,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1601373516, now seen corresponding path program 1 times [2023-08-25 19:41:20,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:20,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097298845] [2023-08-25 19:41:20,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:20,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:21,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:21,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097298845] [2023-08-25 19:41:21,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097298845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:21,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:21,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:41:21,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823741051] [2023-08-25 19:41:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:21,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:41:21,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:21,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:41:21,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:41:21,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1449 [2023-08-25 19:41:21,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 572.3333333333334) internal successors, (3434), 6 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:21,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:21,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1449 [2023-08-25 19:41:21,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:24,192 INFO L124 PetriNetUnfolderBase]: 25692/39819 cut-off events. [2023-08-25 19:41:24,192 INFO L125 PetriNetUnfolderBase]: For 9145/9145 co-relation queries the response was YES. [2023-08-25 19:41:24,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90536 conditions, 39819 events. 25692/39819 cut-off events. For 9145/9145 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 246307 event pairs, 7417 based on Foata normal form. 0/39771 useless extension candidates. Maximal degree in co-relation 90526. Up to 20851 conditions per place. [2023-08-25 19:41:24,370 INFO L140 encePairwiseOnDemand]: 1441/1449 looper letters, 224 selfloop transitions, 5 changer transitions 0/232 dead transitions. [2023-08-25 19:41:24,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 232 transitions, 1104 flow [2023-08-25 19:41:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:41:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:41:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3635 transitions. [2023-08-25 19:41:24,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810443984357026 [2023-08-25 19:41:24,381 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3635 transitions. [2023-08-25 19:41:24,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3635 transitions. [2023-08-25 19:41:24,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:24,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3635 transitions. [2023-08-25 19:41:24,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 605.8333333333334) internal successors, (3635), 6 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,403 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,404 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 268 flow. Second operand 6 states and 3635 transitions. [2023-08-25 19:41:24,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 232 transitions, 1104 flow [2023-08-25 19:41:24,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 232 transitions, 1054 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 19:41:24,419 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 262 flow [2023-08-25 19:41:24,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2023-08-25 19:41:24,420 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -54 predicate places. [2023-08-25 19:41:24,420 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 262 flow [2023-08-25 19:41:24,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 572.3333333333334) internal successors, (3434), 6 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:24,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:24,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 19:41:24,421 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err14ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:24,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:24,422 INFO L85 PathProgramCache]: Analyzing trace with hash 235613975, now seen corresponding path program 1 times [2023-08-25 19:41:24,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:24,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026130612] [2023-08-25 19:41:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:24,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026130612] [2023-08-25 19:41:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026130612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:24,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:41:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846970308] [2023-08-25 19:41:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:24,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:41:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:41:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:41:24,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 616 out of 1449 [2023-08-25 19:41:24,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:24,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 616 of 1449 [2023-08-25 19:41:24,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:25,059 INFO L124 PetriNetUnfolderBase]: 2756/5939 cut-off events. [2023-08-25 19:41:25,059 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-08-25 19:41:25,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12226 conditions, 5939 events. 2756/5939 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40643 event pairs, 2104 based on Foata normal form. 0/5849 useless extension candidates. Maximal degree in co-relation 12216. Up to 4225 conditions per place. [2023-08-25 19:41:25,090 INFO L140 encePairwiseOnDemand]: 1446/1449 looper letters, 71 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-25 19:41:25,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 108 transitions, 479 flow [2023-08-25 19:41:25,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:41:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:41:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1911 transitions. [2023-08-25 19:41:25,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396135265700483 [2023-08-25 19:41:25,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1911 transitions. [2023-08-25 19:41:25,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1911 transitions. [2023-08-25 19:41:25,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:25,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1911 transitions. [2023-08-25 19:41:25,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:25,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:25,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:25,107 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 262 flow. Second operand 3 states and 1911 transitions. [2023-08-25 19:41:25,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 108 transitions, 479 flow [2023-08-25 19:41:25,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 108 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 19:41:25,112 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 256 flow [2023-08-25 19:41:25,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-25 19:41:25,114 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -58 predicate places. [2023-08-25 19:41:25,114 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 256 flow [2023-08-25 19:41:25,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:25,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:25,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:25,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 19:41:25,115 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:25,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash -783165431, now seen corresponding path program 1 times [2023-08-25 19:41:25,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:25,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993319357] [2023-08-25 19:41:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:25,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:25,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:25,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993319357] [2023-08-25 19:41:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993319357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:25,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:41:25,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204172247] [2023-08-25 19:41:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:25,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:41:25,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:41:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:41:25,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 579 out of 1449 [2023-08-25 19:41:25,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 582.1666666666666) internal successors, (3493), 6 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:25,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:25,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 579 of 1449 [2023-08-25 19:41:25,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:28,379 INFO L124 PetriNetUnfolderBase]: 24162/37846 cut-off events. [2023-08-25 19:41:28,379 INFO L125 PetriNetUnfolderBase]: For 6926/6926 co-relation queries the response was YES. [2023-08-25 19:41:28,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83772 conditions, 37846 events. 24162/37846 cut-off events. For 6926/6926 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 239101 event pairs, 21205 based on Foata normal form. 0/37829 useless extension candidates. Maximal degree in co-relation 83762. Up to 36140 conditions per place. [2023-08-25 19:41:28,529 INFO L140 encePairwiseOnDemand]: 1444/1449 looper letters, 198 selfloop transitions, 4 changer transitions 0/206 dead transitions. [2023-08-25 19:41:28,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 206 transitions, 982 flow [2023-08-25 19:41:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:41:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:41:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3656 transitions. [2023-08-25 19:41:28,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42051989878076834 [2023-08-25 19:41:28,539 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3656 transitions. [2023-08-25 19:41:28,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3656 transitions. [2023-08-25 19:41:28,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:28,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3656 transitions. [2023-08-25 19:41:28,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 609.3333333333334) internal successors, (3656), 6 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:28,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:28,556 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:28,557 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 256 flow. Second operand 6 states and 3656 transitions. [2023-08-25 19:41:28,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 206 transitions, 982 flow [2023-08-25 19:41:28,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 206 transitions, 952 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 19:41:28,573 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 256 flow [2023-08-25 19:41:28,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2023-08-25 19:41:28,574 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -56 predicate places. [2023-08-25 19:41:28,574 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 256 flow [2023-08-25 19:41:28,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.1666666666666) internal successors, (3493), 6 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:28,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:28,575 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] [2023-08-25 19:41:28,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 19:41:28,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err19ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:28,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -916550175, now seen corresponding path program 1 times [2023-08-25 19:41:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:28,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807372342] [2023-08-25 19:41:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:28,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807372342] [2023-08-25 19:41:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807372342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:28,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:41:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91870899] [2023-08-25 19:41:28,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:28,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:41:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:41:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:41:28,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1449 [2023-08-25 19:41:28,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:28,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:28,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1449 [2023-08-25 19:41:28,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:29,166 INFO L124 PetriNetUnfolderBase]: 2836/6021 cut-off events. [2023-08-25 19:41:29,166 INFO L125 PetriNetUnfolderBase]: For 1393/1393 co-relation queries the response was YES. [2023-08-25 19:41:29,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12143 conditions, 6021 events. 2836/6021 cut-off events. For 1393/1393 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 40711 event pairs, 2095 based on Foata normal form. 0/5943 useless extension candidates. Maximal degree in co-relation 12133. Up to 4265 conditions per place. [2023-08-25 19:41:29,186 INFO L140 encePairwiseOnDemand]: 1445/1449 looper letters, 71 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-08-25 19:41:29,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 477 flow [2023-08-25 19:41:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:41:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:41:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1909 transitions. [2023-08-25 19:41:29,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2023-08-25 19:41:29,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1909 transitions. [2023-08-25 19:41:29,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1909 transitions. [2023-08-25 19:41:29,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:29,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1909 transitions. [2023-08-25 19:41:29,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,199 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 256 flow. Second operand 3 states and 1909 transitions. [2023-08-25 19:41:29,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 477 flow [2023-08-25 19:41:29,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 107 transitions, 468 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:41:29,202 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 263 flow [2023-08-25 19:41:29,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2023-08-25 19:41:29,203 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -58 predicate places. [2023-08-25 19:41:29,203 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 263 flow [2023-08-25 19:41:29,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:29,204 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] [2023-08-25 19:41:29,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 19:41:29,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err19ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:29,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2003317626, now seen corresponding path program 1 times [2023-08-25 19:41:29,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:29,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5244977] [2023-08-25 19:41:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:29,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5244977] [2023-08-25 19:41:29,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5244977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:29,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:29,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:41:29,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254705936] [2023-08-25 19:41:29,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:29,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:41:29,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:41:29,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:41:29,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1449 [2023-08-25 19:41:29,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:29,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1449 [2023-08-25 19:41:29,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:29,701 INFO L124 PetriNetUnfolderBase]: 2926/6035 cut-off events. [2023-08-25 19:41:29,701 INFO L125 PetriNetUnfolderBase]: For 1727/1727 co-relation queries the response was YES. [2023-08-25 19:41:29,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12668 conditions, 6035 events. 2926/6035 cut-off events. For 1727/1727 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 40083 event pairs, 2153 based on Foata normal form. 0/5965 useless extension candidates. Maximal degree in co-relation 12658. Up to 4381 conditions per place. [2023-08-25 19:41:29,721 INFO L140 encePairwiseOnDemand]: 1445/1449 looper letters, 75 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-08-25 19:41:29,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 490 flow [2023-08-25 19:41:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:41:29,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:41:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1912 transitions. [2023-08-25 19:41:29,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398435702783529 [2023-08-25 19:41:29,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1912 transitions. [2023-08-25 19:41:29,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1912 transitions. [2023-08-25 19:41:29,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:29,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1912 transitions. [2023-08-25 19:41:29,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,734 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 263 flow. Second operand 3 states and 1912 transitions. [2023-08-25 19:41:29,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 490 flow [2023-08-25 19:41:29,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 110 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 19:41:29,739 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 273 flow [2023-08-25 19:41:29,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2023-08-25 19:41:29,740 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -57 predicate places. [2023-08-25 19:41:29,740 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 273 flow [2023-08-25 19:41:29,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:29,741 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] [2023-08-25 19:41:29,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 19:41:29,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:29,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:29,741 INFO L85 PathProgramCache]: Analyzing trace with hash 90202892, now seen corresponding path program 1 times [2023-08-25 19:41:29,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180735359] [2023-08-25 19:41:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:30,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:30,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180735359] [2023-08-25 19:41:30,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180735359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:30,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:30,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 19:41:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490960648] [2023-08-25 19:41:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:30,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:41:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:41:30,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 19:41:30,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 608 out of 1449 [2023-08-25 19:41:30,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 611.2) internal successors, (3056), 5 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:30,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:30,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 608 of 1449 [2023-08-25 19:41:30,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:31,194 INFO L124 PetriNetUnfolderBase]: 6561/13617 cut-off events. [2023-08-25 19:41:31,194 INFO L125 PetriNetUnfolderBase]: For 3722/3722 co-relation queries the response was YES. [2023-08-25 19:41:31,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28843 conditions, 13617 events. 6561/13617 cut-off events. For 3722/3722 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 105290 event pairs, 1166 based on Foata normal form. 1/13562 useless extension candidates. Maximal degree in co-relation 28832. Up to 3965 conditions per place. [2023-08-25 19:41:31,254 INFO L140 encePairwiseOnDemand]: 1439/1449 looper letters, 148 selfloop transitions, 17 changer transitions 1/197 dead transitions. [2023-08-25 19:41:31,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 197 transitions, 950 flow [2023-08-25 19:41:31,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 19:41:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 19:41:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3187 transitions. [2023-08-25 19:41:31,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398895790200138 [2023-08-25 19:41:31,258 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3187 transitions. [2023-08-25 19:41:31,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3187 transitions. [2023-08-25 19:41:31,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:31,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3187 transitions. [2023-08-25 19:41:31,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 637.4) internal successors, (3187), 5 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:31,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:31,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:31,270 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 273 flow. Second operand 5 states and 3187 transitions. [2023-08-25 19:41:31,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 197 transitions, 950 flow [2023-08-25 19:41:31,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 197 transitions, 942 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 19:41:31,297 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 402 flow [2023-08-25 19:41:31,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2023-08-25 19:41:31,298 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -51 predicate places. [2023-08-25 19:41:31,298 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 402 flow [2023-08-25 19:41:31,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 611.2) internal successors, (3056), 5 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:31,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:31,299 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] [2023-08-25 19:41:31,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 19:41:31,299 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:31,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 6243466, now seen corresponding path program 1 times [2023-08-25 19:41:31,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:31,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565584796] [2023-08-25 19:41:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:31,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:31,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565584796] [2023-08-25 19:41:31,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565584796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:31,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:41:31,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 19:41:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419876324] [2023-08-25 19:41:31,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:31,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 19:41:31,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:31,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 19:41:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 19:41:31,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1449 [2023-08-25 19:41:31,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 596.25) internal successors, (2385), 4 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:31,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:31,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1449 [2023-08-25 19:41:31,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:32,914 INFO L124 PetriNetUnfolderBase]: 9280/17581 cut-off events. [2023-08-25 19:41:32,914 INFO L125 PetriNetUnfolderBase]: For 8145/8165 co-relation queries the response was YES. [2023-08-25 19:41:32,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41344 conditions, 17581 events. 9280/17581 cut-off events. For 8145/8165 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 133575 event pairs, 7209 based on Foata normal form. 10/17500 useless extension candidates. Maximal degree in co-relation 41329. Up to 13895 conditions per place. [2023-08-25 19:41:32,974 INFO L140 encePairwiseOnDemand]: 1444/1449 looper letters, 103 selfloop transitions, 4 changer transitions 7/136 dead transitions. [2023-08-25 19:41:32,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 790 flow [2023-08-25 19:41:32,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 19:41:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 19:41:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2431 transitions. [2023-08-25 19:41:32,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194271911663216 [2023-08-25 19:41:32,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2431 transitions. [2023-08-25 19:41:32,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2431 transitions. [2023-08-25 19:41:32,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:32,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2431 transitions. [2023-08-25 19:41:32,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 607.75) internal successors, (2431), 4 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:32,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1449.0) internal successors, (7245), 5 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:32,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1449.0) internal successors, (7245), 5 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:32,985 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 402 flow. Second operand 4 states and 2431 transitions. [2023-08-25 19:41:32,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 790 flow [2023-08-25 19:41:33,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 136 transitions, 790 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:41:33,004 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 391 flow [2023-08-25 19:41:33,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2023-08-25 19:41:33,005 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -47 predicate places. [2023-08-25 19:41:33,005 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 391 flow [2023-08-25 19:41:33,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 596.25) internal successors, (2385), 4 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:33,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:33,006 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] [2023-08-25 19:41:33,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 19:41:33,006 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:33,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1409553889, now seen corresponding path program 1 times [2023-08-25 19:41:33,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:33,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015288301] [2023-08-25 19:41:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:33,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:41:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015288301] [2023-08-25 19:41:33,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015288301] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:33,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717465393] [2023-08-25 19:41:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:33,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:33,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:33,144 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) [2023-08-25 19:41:33,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 19:41:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:33,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 19:41:33,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:41:33,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:41:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717465393] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:33,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:41:33,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-08-25 19:41:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711382830] [2023-08-25 19:41:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:33,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:41:33,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:41:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-25 19:41:33,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1449 [2023-08-25 19:41:33,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 593.4) internal successors, (2967), 5 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:33,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:33,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1449 [2023-08-25 19:41:33,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:35,478 INFO L124 PetriNetUnfolderBase]: 11345/20104 cut-off events. [2023-08-25 19:41:35,479 INFO L125 PetriNetUnfolderBase]: For 10113/10125 co-relation queries the response was YES. [2023-08-25 19:41:35,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48227 conditions, 20104 events. 11345/20104 cut-off events. For 10113/10125 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 141954 event pairs, 8369 based on Foata normal form. 114/20124 useless extension candidates. Maximal degree in co-relation 48210. Up to 16026 conditions per place. [2023-08-25 19:41:35,558 INFO L140 encePairwiseOnDemand]: 1443/1449 looper letters, 107 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2023-08-25 19:41:35,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 129 transitions, 739 flow [2023-08-25 19:41:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 19:41:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 19:41:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3023 transitions. [2023-08-25 19:41:35,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41725327812284335 [2023-08-25 19:41:35,562 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3023 transitions. [2023-08-25 19:41:35,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3023 transitions. [2023-08-25 19:41:35,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:35,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3023 transitions. [2023-08-25 19:41:35,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 604.6) internal successors, (3023), 5 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:35,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:35,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:35,572 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 391 flow. Second operand 5 states and 3023 transitions. [2023-08-25 19:41:35,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 129 transitions, 739 flow [2023-08-25 19:41:35,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 707 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-25 19:41:35,654 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 390 flow [2023-08-25 19:41:35,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-08-25 19:41:35,655 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -47 predicate places. [2023-08-25 19:41:35,655 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 390 flow [2023-08-25 19:41:35,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 593.4) internal successors, (2967), 5 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:35,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:35,656 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] [2023-08-25 19:41:35,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 19:41:35,858 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,SelfDestructingSolverStorable15 [2023-08-25 19:41:35,859 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:35,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1508817157, now seen corresponding path program 1 times [2023-08-25 19:41:35,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503225851] [2023-08-25 19:41:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:35,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:35,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:35,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503225851] [2023-08-25 19:41:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503225851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:35,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714664493] [2023-08-25 19:41:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:35,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:35,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:35,987 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) [2023-08-25 19:41:35,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 19:41:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:36,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 19:41:36,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:36,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714664493] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:36,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:41:36,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-08-25 19:41:36,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665197297] [2023-08-25 19:41:36,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:41:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:36,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:41:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-25 19:41:36,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1449 [2023-08-25 19:41:36,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 390 flow. Second operand has 5 states, 5 states have (on average 593.2) internal successors, (2966), 5 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:36,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:36,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1449 [2023-08-25 19:41:36,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:37,687 INFO L124 PetriNetUnfolderBase]: 8937/16388 cut-off events. [2023-08-25 19:41:37,688 INFO L125 PetriNetUnfolderBase]: For 7892/7892 co-relation queries the response was YES. [2023-08-25 19:41:37,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39881 conditions, 16388 events. 8937/16388 cut-off events. For 7892/7892 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 119945 event pairs, 6347 based on Foata normal form. 94/16396 useless extension candidates. Maximal degree in co-relation 39865. Up to 12718 conditions per place. [2023-08-25 19:41:37,754 INFO L140 encePairwiseOnDemand]: 1443/1449 looper letters, 99 selfloop transitions, 5 changer transitions 0/126 dead transitions. [2023-08-25 19:41:37,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 126 transitions, 712 flow [2023-08-25 19:41:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 19:41:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 19:41:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3015 transitions. [2023-08-25 19:41:37,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161490683229814 [2023-08-25 19:41:37,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3015 transitions. [2023-08-25 19:41:37,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3015 transitions. [2023-08-25 19:41:37,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:37,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3015 transitions. [2023-08-25 19:41:37,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 603.0) internal successors, (3015), 5 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:37,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:37,768 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:37,768 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 390 flow. Second operand 5 states and 3015 transitions. [2023-08-25 19:41:37,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 126 transitions, 712 flow [2023-08-25 19:41:37,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 126 transitions, 704 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 19:41:37,801 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 407 flow [2023-08-25 19:41:37,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2023-08-25 19:41:37,801 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -44 predicate places. [2023-08-25 19:41:37,801 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 407 flow [2023-08-25 19:41:37,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 593.2) internal successors, (2966), 5 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:37,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:37,802 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] [2023-08-25 19:41:37,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:38,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 19:41:38,008 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:38,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1122421217, now seen corresponding path program 1 times [2023-08-25 19:41:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435713137] [2023-08-25 19:41:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435713137] [2023-08-25 19:41:39,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435713137] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:39,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778456272] [2023-08-25 19:41:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:39,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:39,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:39,298 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) [2023-08-25 19:41:39,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 19:41:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:39,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 92 conjunts are in the unsatisfiable core [2023-08-25 19:41:39,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:39,583 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 [2023-08-25 19:41:39,625 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 [2023-08-25 19:41:39,712 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 [2023-08-25 19:41:40,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 19:41:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:40,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778456272] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:41:40,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:41:40,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 29 [2023-08-25 19:41:40,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475306850] [2023-08-25 19:41:40,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:41:40,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-25 19:41:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:40,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-25 19:41:40,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=748, Unknown=3, NotChecked=0, Total=870 [2023-08-25 19:41:40,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 498 out of 1449 [2023-08-25 19:41:40,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 407 flow. Second operand has 30 states, 30 states have (on average 502.76666666666665) internal successors, (15083), 30 states have internal predecessors, (15083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:40,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:40,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 498 of 1449 [2023-08-25 19:41:40,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:55,249 INFO L124 PetriNetUnfolderBase]: 99835/151021 cut-off events. [2023-08-25 19:41:55,250 INFO L125 PetriNetUnfolderBase]: For 49945/49945 co-relation queries the response was YES. [2023-08-25 19:41:55,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377045 conditions, 151021 events. 99835/151021 cut-off events. For 49945/49945 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 1043367 event pairs, 8410 based on Foata normal form. 1/151022 useless extension candidates. Maximal degree in co-relation 377027. Up to 37508 conditions per place. [2023-08-25 19:41:56,109 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 739 selfloop transitions, 104 changer transitions 1/844 dead transitions. [2023-08-25 19:41:56,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 844 transitions, 4241 flow [2023-08-25 19:41:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 19:41:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 19:41:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 15265 transitions. [2023-08-25 19:41:56,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36327074557959116 [2023-08-25 19:41:56,134 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 15265 transitions. [2023-08-25 19:41:56,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 15265 transitions. [2023-08-25 19:41:56,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:56,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 15265 transitions. [2023-08-25 19:41:56,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 526.3793103448276) internal successors, (15265), 29 states have internal predecessors, (15265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:56,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 1449.0) internal successors, (43470), 30 states have internal predecessors, (43470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:56,183 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 1449.0) internal successors, (43470), 30 states have internal predecessors, (43470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:56,183 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 407 flow. Second operand 29 states and 15265 transitions. [2023-08-25 19:41:56,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 844 transitions, 4241 flow [2023-08-25 19:41:57,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 844 transitions, 4221 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 19:41:57,191 INFO L231 Difference]: Finished difference. Result has 154 places, 194 transitions, 1380 flow [2023-08-25 19:41:57,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1380, PETRI_PLACES=154, PETRI_TRANSITIONS=194} [2023-08-25 19:41:57,191 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 2 predicate places. [2023-08-25 19:41:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 194 transitions, 1380 flow [2023-08-25 19:41:57,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 502.76666666666665) internal successors, (15083), 30 states have internal predecessors, (15083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:57,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:57,193 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] [2023-08-25 19:41:57,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:57,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 19:41:57,394 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:41:57,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2090693497, now seen corresponding path program 2 times [2023-08-25 19:41:57,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817881545] [2023-08-25 19:41:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:57,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:58,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817881545] [2023-08-25 19:41:58,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817881545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:58,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89012456] [2023-08-25 19:41:58,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:41:58,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:58,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:58,573 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) [2023-08-25 19:41:58,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 19:41:58,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:41:58,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:58,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 81 conjunts are in the unsatisfiable core [2023-08-25 19:41:58,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:59,353 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 19:41:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:59,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:59,667 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:59,667 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 23 treesize of output 16 [2023-08-25 19:41:59,682 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:41:59,682 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 23 treesize of output 12 [2023-08-25 19:41:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89012456] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:41:59,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:41:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2023-08-25 19:41:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825943629] [2023-08-25 19:41:59,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:41:59,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 19:41:59,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:59,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 19:41:59,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-08-25 19:41:59,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 1449 [2023-08-25 19:41:59,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 194 transitions, 1380 flow. Second operand has 26 states, 26 states have (on average 521.8461538461538) internal successors, (13568), 26 states have internal predecessors, (13568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:59,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:59,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 1449 [2023-08-25 19:41:59,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:07,887 INFO L124 PetriNetUnfolderBase]: 33039/53714 cut-off events. [2023-08-25 19:42:07,888 INFO L125 PetriNetUnfolderBase]: For 84408/84408 co-relation queries the response was YES. [2023-08-25 19:42:08,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161894 conditions, 53714 events. 33039/53714 cut-off events. For 84408/84408 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 356336 event pairs, 6275 based on Foata normal form. 1/53715 useless extension candidates. Maximal degree in co-relation 161855. Up to 17869 conditions per place. [2023-08-25 19:42:08,336 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 593 selfloop transitions, 120 changer transitions 1/722 dead transitions. [2023-08-25 19:42:08,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 722 transitions, 4785 flow [2023-08-25 19:42:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 19:42:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 19:42:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 13042 transitions. [2023-08-25 19:42:08,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3750287554635381 [2023-08-25 19:42:08,346 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 13042 transitions. [2023-08-25 19:42:08,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 13042 transitions. [2023-08-25 19:42:08,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:08,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 13042 transitions. [2023-08-25 19:42:08,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 543.4166666666666) internal successors, (13042), 24 states have internal predecessors, (13042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:08,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1449.0) internal successors, (36225), 25 states have internal predecessors, (36225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:08,389 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1449.0) internal successors, (36225), 25 states have internal predecessors, (36225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:08,389 INFO L175 Difference]: Start difference. First operand has 154 places, 194 transitions, 1380 flow. Second operand 24 states and 13042 transitions. [2023-08-25 19:42:08,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 722 transitions, 4785 flow [2023-08-25 19:42:09,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 722 transitions, 4660 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-08-25 19:42:09,253 INFO L231 Difference]: Finished difference. Result has 183 places, 237 transitions, 2027 flow [2023-08-25 19:42:09,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2027, PETRI_PLACES=183, PETRI_TRANSITIONS=237} [2023-08-25 19:42:09,254 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 31 predicate places. [2023-08-25 19:42:09,254 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 237 transitions, 2027 flow [2023-08-25 19:42:09,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 521.8461538461538) internal successors, (13568), 26 states have internal predecessors, (13568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:09,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:09,256 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] [2023-08-25 19:42:09,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 19:42:09,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:09,461 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:42:09,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1895519647, now seen corresponding path program 3 times [2023-08-25 19:42:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:09,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192193084] [2023-08-25 19:42:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192193084] [2023-08-25 19:42:10,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192193084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:10,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644553091] [2023-08-25 19:42:10,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:42:10,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:10,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:10,581 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) [2023-08-25 19:42:10,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 19:42:10,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 19:42:10,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:10,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-25 19:42:10,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:11,150 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2023-08-25 19:42:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:11,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:42:11,519 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:11,520 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 23 treesize of output 16 [2023-08-25 19:42:11,532 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:42:11,532 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 23 treesize of output 12 [2023-08-25 19:42:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:11,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644553091] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:42:11,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:42:11,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2023-08-25 19:42:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042024105] [2023-08-25 19:42:11,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:42:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 19:42:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 19:42:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-08-25 19:42:11,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 519 out of 1449 [2023-08-25 19:42:11,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 237 transitions, 2027 flow. Second operand has 25 states, 25 states have (on average 523.92) internal successors, (13098), 25 states have internal predecessors, (13098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:11,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:11,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 519 of 1449 [2023-08-25 19:42:11,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:21,590 INFO L124 PetriNetUnfolderBase]: 38086/61979 cut-off events. [2023-08-25 19:42:21,591 INFO L125 PetriNetUnfolderBase]: For 121973/121973 co-relation queries the response was YES. [2023-08-25 19:42:22,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194513 conditions, 61979 events. 38086/61979 cut-off events. For 121973/121973 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 420436 event pairs, 8734 based on Foata normal form. 1/61980 useless extension candidates. Maximal degree in co-relation 194464. Up to 25069 conditions per place. [2023-08-25 19:42:22,218 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 611 selfloop transitions, 138 changer transitions 1/758 dead transitions. [2023-08-25 19:42:22,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 758 transitions, 5514 flow [2023-08-25 19:42:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 19:42:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 19:42:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 12579 transitions. [2023-08-25 19:42:22,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37744171392564585 [2023-08-25 19:42:22,230 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 12579 transitions. [2023-08-25 19:42:22,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 12579 transitions. [2023-08-25 19:42:22,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:22,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 12579 transitions. [2023-08-25 19:42:22,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 546.9130434782609) internal successors, (12579), 23 states have internal predecessors, (12579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:22,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 1449.0) internal successors, (34776), 24 states have internal predecessors, (34776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:22,271 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 1449.0) internal successors, (34776), 24 states have internal predecessors, (34776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:22,271 INFO L175 Difference]: Start difference. First operand has 183 places, 237 transitions, 2027 flow. Second operand 23 states and 12579 transitions. [2023-08-25 19:42:22,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 758 transitions, 5514 flow [2023-08-25 19:42:23,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 758 transitions, 5442 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-25 19:42:23,589 INFO L231 Difference]: Finished difference. Result has 207 places, 269 transitions, 2670 flow [2023-08-25 19:42:23,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2670, PETRI_PLACES=207, PETRI_TRANSITIONS=269} [2023-08-25 19:42:23,589 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 55 predicate places. [2023-08-25 19:42:23,589 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 269 transitions, 2670 flow [2023-08-25 19:42:23,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 523.92) internal successors, (13098), 25 states have internal predecessors, (13098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:23,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:23,591 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] [2023-08-25 19:42:23,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:23,797 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:42:23,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1804542643, now seen corresponding path program 1 times [2023-08-25 19:42:23,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:23,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576620269] [2023-08-25 19:42:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:23,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:24,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:24,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576620269] [2023-08-25 19:42:24,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576620269] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:24,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260130042] [2023-08-25 19:42:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:24,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:24,801 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) [2023-08-25 19:42:24,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 19:42:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:25,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 88 conjunts are in the unsatisfiable core [2023-08-25 19:42:25,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:25,048 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 [2023-08-25 19:42:25,165 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 [2023-08-25 19:42:25,224 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 [2023-08-25 19:42:25,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 19:42:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:25,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:42:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:26,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260130042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:42:26,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:42:26,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 28 [2023-08-25 19:42:26,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171399034] [2023-08-25 19:42:26,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:42:26,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-25 19:42:26,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:26,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-25 19:42:26,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=686, Unknown=2, NotChecked=0, Total=812 [2023-08-25 19:42:26,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1449 [2023-08-25 19:42:26,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 269 transitions, 2670 flow. Second operand has 29 states, 29 states have (on average 482.9655172413793) internal successors, (14006), 29 states have internal predecessors, (14006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:26,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:26,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1449 [2023-08-25 19:42:26,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:43:00,837 INFO L124 PetriNetUnfolderBase]: 153847/233379 cut-off events. [2023-08-25 19:43:00,837 INFO L125 PetriNetUnfolderBase]: For 499185/499185 co-relation queries the response was YES. [2023-08-25 19:43:03,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734385 conditions, 233379 events. 153847/233379 cut-off events. For 499185/499185 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 1696291 event pairs, 32157 based on Foata normal form. 1/233380 useless extension candidates. Maximal degree in co-relation 734330. Up to 108111 conditions per place. [2023-08-25 19:43:04,109 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 753 selfloop transitions, 173 changer transitions 1/927 dead transitions. [2023-08-25 19:43:04,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 927 transitions, 7155 flow [2023-08-25 19:43:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 19:43:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 19:43:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 15104 transitions. [2023-08-25 19:43:04,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3474580170232344 [2023-08-25 19:43:04,119 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 15104 transitions. [2023-08-25 19:43:04,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 15104 transitions. [2023-08-25 19:43:04,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:43:04,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 15104 transitions. [2023-08-25 19:43:04,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 503.46666666666664) internal successors, (15104), 30 states have internal predecessors, (15104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:04,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 1449.0) internal successors, (44919), 31 states have internal predecessors, (44919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:04,164 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 1449.0) internal successors, (44919), 31 states have internal predecessors, (44919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:04,164 INFO L175 Difference]: Start difference. First operand has 207 places, 269 transitions, 2670 flow. Second operand 30 states and 15104 transitions. [2023-08-25 19:43:04,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 927 transitions, 7155 flow [2023-08-25 19:43:17,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 927 transitions, 7000 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-08-25 19:43:17,360 INFO L231 Difference]: Finished difference. Result has 241 places, 328 transitions, 3730 flow [2023-08-25 19:43:17,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3730, PETRI_PLACES=241, PETRI_TRANSITIONS=328} [2023-08-25 19:43:17,361 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 89 predicate places. [2023-08-25 19:43:17,361 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 328 transitions, 3730 flow [2023-08-25 19:43:17,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 482.9655172413793) internal successors, (14006), 29 states have internal predecessors, (14006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:17,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:43:17,362 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] [2023-08-25 19:43:17,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 19:43:17,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:43:17,563 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:43:17,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:43:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1732471109, now seen corresponding path program 1 times [2023-08-25 19:43:17,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:43:17,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238635425] [2023-08-25 19:43:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:43:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:43:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:43:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:43:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:43:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238635425] [2023-08-25 19:43:18,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238635425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:43:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667679824] [2023-08-25 19:43:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:43:18,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:43:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:43:18,581 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) [2023-08-25 19:43:18,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 19:43:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:43:18,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 88 conjunts are in the unsatisfiable core [2023-08-25 19:43:18,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:43:18,840 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 [2023-08-25 19:43:18,886 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 [2023-08-25 19:43:18,948 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 [2023-08-25 19:43:19,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 19:43:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:43:19,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:43:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:43:19,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667679824] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:43:19,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:43:19,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 26 [2023-08-25 19:43:19,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797876757] [2023-08-25 19:43:19,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:43:19,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 19:43:19,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:43:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 19:43:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=584, Unknown=1, NotChecked=0, Total=702 [2023-08-25 19:43:19,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1449 [2023-08-25 19:43:19,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 328 transitions, 3730 flow. Second operand has 27 states, 27 states have (on average 483.6296296296296) internal successors, (13058), 27 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:19,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:43:19,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1449 [2023-08-25 19:43:19,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:44:09,357 INFO L124 PetriNetUnfolderBase]: 194835/295140 cut-off events. [2023-08-25 19:44:09,357 INFO L125 PetriNetUnfolderBase]: For 795834/795834 co-relation queries the response was YES. [2023-08-25 19:44:13,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984789 conditions, 295140 events. 194835/295140 cut-off events. For 795834/795834 co-relation queries the response was YES. Maximal size of possible extension queue 2090. Compared 2227371 event pairs, 42112 based on Foata normal form. 1/295141 useless extension candidates. Maximal degree in co-relation 984721. Up to 153809 conditions per place. [2023-08-25 19:44:14,359 INFO L140 encePairwiseOnDemand]: 1429/1449 looper letters, 758 selfloop transitions, 182 changer transitions 1/941 dead transitions. [2023-08-25 19:44:14,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 941 transitions, 9006 flow [2023-08-25 19:44:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 19:44:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 19:44:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 11183 transitions. [2023-08-25 19:44:14,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080619863228557 [2023-08-25 19:44:14,371 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 11183 transitions. [2023-08-25 19:44:14,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 11183 transitions. [2023-08-25 19:44:14,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:44:14,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 11183 transitions. [2023-08-25 19:44:14,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 508.3181818181818) internal successors, (11183), 22 states have internal predecessors, (11183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:44:14,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 1449.0) internal successors, (33327), 23 states have internal predecessors, (33327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:44:14,400 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 1449.0) internal successors, (33327), 23 states have internal predecessors, (33327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:44:14,400 INFO L175 Difference]: Start difference. First operand has 241 places, 328 transitions, 3730 flow. Second operand 22 states and 11183 transitions. [2023-08-25 19:44:14,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 941 transitions, 9006 flow [2023-08-25 19:44:42,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 941 transitions, 8865 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-25 19:44:42,800 INFO L231 Difference]: Finished difference. Result has 266 places, 410 transitions, 5454 flow [2023-08-25 19:44:42,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=3600, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5454, PETRI_PLACES=266, PETRI_TRANSITIONS=410} [2023-08-25 19:44:42,801 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 114 predicate places. [2023-08-25 19:44:42,801 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 410 transitions, 5454 flow [2023-08-25 19:44:42,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 483.6296296296296) internal successors, (13058), 27 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:44:42,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:44:42,803 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] [2023-08-25 19:44:42,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 19:44:43,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:44:43,009 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:44:43,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:44:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash 609073361, now seen corresponding path program 4 times [2023-08-25 19:44:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:44:43,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442593374] [2023-08-25 19:44:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:44:43,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:44:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:44:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:44:43,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:44:43,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442593374] [2023-08-25 19:44:43,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442593374] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:44:43,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961718467] [2023-08-25 19:44:43,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:44:43,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:44:43,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:44:43,953 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) [2023-08-25 19:44:43,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 19:44:44,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:44:44,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:44:44,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 83 conjunts are in the unsatisfiable core [2023-08-25 19:44:44,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:44:44,688 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 19:44:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:44:44,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:44:44,928 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:44:44,929 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 23 treesize of output 16 [2023-08-25 19:44:44,936 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:44:44,937 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 23 treesize of output 12 [2023-08-25 19:44:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:44:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961718467] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:44:45,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:44:45,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2023-08-25 19:44:45,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645385951] [2023-08-25 19:44:45,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:44:45,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 19:44:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:44:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 19:44:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-08-25 19:44:45,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 1449 [2023-08-25 19:44:45,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 410 transitions, 5454 flow. Second operand has 26 states, 26 states have (on average 521.8846153846154) internal successors, (13569), 26 states have internal predecessors, (13569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:44:45,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:44:45,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 1449 [2023-08-25 19:44:45,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:45:04,223 INFO L124 PetriNetUnfolderBase]: 59743/97277 cut-off events. [2023-08-25 19:45:04,223 INFO L125 PetriNetUnfolderBase]: For 374542/374543 co-relation queries the response was YES. [2023-08-25 19:45:05,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348072 conditions, 97277 events. 59743/97277 cut-off events. For 374542/374543 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 713136 event pairs, 14677 based on Foata normal form. 2/97279 useless extension candidates. Maximal degree in co-relation 347994. Up to 48415 conditions per place. [2023-08-25 19:45:06,132 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 695 selfloop transitions, 239 changer transitions 1/943 dead transitions. [2023-08-25 19:45:06,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 943 transitions, 9769 flow [2023-08-25 19:45:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 19:45:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 19:45:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 13594 transitions. [2023-08-25 19:45:06,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37526570048309177 [2023-08-25 19:45:06,144 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 13594 transitions. [2023-08-25 19:45:06,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 13594 transitions. [2023-08-25 19:45:06,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:45:06,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 13594 transitions. [2023-08-25 19:45:06,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 543.76) internal successors, (13594), 25 states have internal predecessors, (13594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:06,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 1449.0) internal successors, (37674), 26 states have internal predecessors, (37674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:06,183 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 1449.0) internal successors, (37674), 26 states have internal predecessors, (37674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:06,183 INFO L175 Difference]: Start difference. First operand has 266 places, 410 transitions, 5454 flow. Second operand 25 states and 13594 transitions. [2023-08-25 19:45:06,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 943 transitions, 9769 flow [2023-08-25 19:45:11,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 943 transitions, 9555 flow, removed 88 selfloop flow, removed 4 redundant places. [2023-08-25 19:45:11,692 INFO L231 Difference]: Finished difference. Result has 291 places, 440 transitions, 6372 flow [2023-08-25 19:45:11,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6372, PETRI_PLACES=291, PETRI_TRANSITIONS=440} [2023-08-25 19:45:11,693 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 139 predicate places. [2023-08-25 19:45:11,693 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 440 transitions, 6372 flow [2023-08-25 19:45:11,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 521.8846153846154) internal successors, (13569), 26 states have internal predecessors, (13569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:11,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:45:11,695 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] [2023-08-25 19:45:11,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-25 19:45:11,895 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,SelfDestructingSolverStorable22 [2023-08-25 19:45:11,896 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:45:11,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:45:11,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1704531197, now seen corresponding path program 2 times [2023-08-25 19:45:11,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:45:11,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694008678] [2023-08-25 19:45:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:45:11,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:45:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:45:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:45:12,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:45:12,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694008678] [2023-08-25 19:45:12,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694008678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:45:12,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811535438] [2023-08-25 19:45:12,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:45:12,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:45:12,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:45:12,828 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) [2023-08-25 19:45:12,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 19:45:13,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:45:13,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:45:13,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 75 conjunts are in the unsatisfiable core [2023-08-25 19:45:13,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:45:13,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 19:45:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:45:13,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:45:13,723 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:45:13,724 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 25 treesize of output 18 [2023-08-25 19:45:13,733 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:45:13,733 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 25 treesize of output 14 [2023-08-25 19:45:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:45:13,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811535438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:45:13,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:45:13,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2023-08-25 19:45:13,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356200454] [2023-08-25 19:45:13,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:45:13,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 19:45:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:45:13,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 19:45:13,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-08-25 19:45:13,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 1449 [2023-08-25 19:45:13,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 440 transitions, 6372 flow. Second operand has 23 states, 23 states have (on average 502.4347826086956) internal successors, (11556), 23 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:13,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:45:13,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 1449 [2023-08-25 19:45:13,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:45:37,658 INFO L124 PetriNetUnfolderBase]: 65715/106966 cut-off events. [2023-08-25 19:45:37,658 INFO L125 PetriNetUnfolderBase]: For 503739/503741 co-relation queries the response was YES. [2023-08-25 19:45:39,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393514 conditions, 106966 events. 65715/106966 cut-off events. For 503739/503741 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 801198 event pairs, 16453 based on Foata normal form. 1/106967 useless extension candidates. Maximal degree in co-relation 393431. Up to 59347 conditions per place. [2023-08-25 19:45:39,955 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 741 selfloop transitions, 216 changer transitions 1/966 dead transitions. [2023-08-25 19:45:39,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 966 transitions, 10902 flow [2023-08-25 19:45:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 19:45:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 19:45:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 12071 transitions. [2023-08-25 19:45:39,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621988177753773 [2023-08-25 19:45:39,964 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 12071 transitions. [2023-08-25 19:45:39,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 12071 transitions. [2023-08-25 19:45:39,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:45:39,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 12071 transitions. [2023-08-25 19:45:39,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 524.8260869565217) internal successors, (12071), 23 states have internal predecessors, (12071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:39,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 1449.0) internal successors, (34776), 24 states have internal predecessors, (34776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:39,997 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 1449.0) internal successors, (34776), 24 states have internal predecessors, (34776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:39,997 INFO L175 Difference]: Start difference. First operand has 291 places, 440 transitions, 6372 flow. Second operand 23 states and 12071 transitions. [2023-08-25 19:45:39,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 966 transitions, 10902 flow [2023-08-25 19:45:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 966 transitions, 10430 flow, removed 73 selfloop flow, removed 15 redundant places. [2023-08-25 19:45:47,618 INFO L231 Difference]: Finished difference. Result has 303 places, 466 transitions, 6923 flow [2023-08-25 19:45:47,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=5917, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6923, PETRI_PLACES=303, PETRI_TRANSITIONS=466} [2023-08-25 19:45:47,619 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 151 predicate places. [2023-08-25 19:45:47,619 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 466 transitions, 6923 flow [2023-08-25 19:45:47,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 502.4347826086956) internal successors, (11556), 23 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:47,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:45:47,620 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] [2023-08-25 19:45:47,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-25 19:45:47,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-25 19:45:47,821 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:45:47,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:45:47,822 INFO L85 PathProgramCache]: Analyzing trace with hash -713711487, now seen corresponding path program 3 times [2023-08-25 19:45:47,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:45:47,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4701082] [2023-08-25 19:45:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:45:47,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:45:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:45:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:45:49,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:45:49,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4701082] [2023-08-25 19:45:49,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4701082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:45:49,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563579937] [2023-08-25 19:45:49,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:45:49,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:45:49,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:45:49,005 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) [2023-08-25 19:45:49,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 19:45:49,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 19:45:49,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:45:49,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 75 conjunts are in the unsatisfiable core [2023-08-25 19:45:49,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:45:49,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 19:45:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:45:49,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:45:50,065 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:45:50,066 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 25 treesize of output 18 [2023-08-25 19:45:50,075 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:45:50,075 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 15 [2023-08-25 19:45:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:45:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563579937] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:45:50,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:45:50,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26 [2023-08-25 19:45:50,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929555174] [2023-08-25 19:45:50,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:45:50,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 19:45:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:45:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 19:45:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2023-08-25 19:45:50,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 1449 [2023-08-25 19:45:50,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 466 transitions, 6923 flow. Second operand has 27 states, 27 states have (on average 502.48148148148147) internal successors, (13567), 27 states have internal predecessors, (13567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:45:50,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:45:50,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 1449 [2023-08-25 19:45:50,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:46:16,569 INFO L124 PetriNetUnfolderBase]: 74504/121294 cut-off events. [2023-08-25 19:46:16,570 INFO L125 PetriNetUnfolderBase]: For 634148/634150 co-relation queries the response was YES. [2023-08-25 19:46:18,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455217 conditions, 121294 events. 74504/121294 cut-off events. For 634148/634150 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 916861 event pairs, 19156 based on Foata normal form. 2/121296 useless extension candidates. Maximal degree in co-relation 455129. Up to 63785 conditions per place. [2023-08-25 19:46:19,332 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 799 selfloop transitions, 257 changer transitions 1/1065 dead transitions. [2023-08-25 19:46:19,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1065 transitions, 12122 flow [2023-08-25 19:46:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 19:46:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 19:46:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 12655 transitions. [2023-08-25 19:46:19,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639003910743041 [2023-08-25 19:46:19,340 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 12655 transitions. [2023-08-25 19:46:19,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 12655 transitions. [2023-08-25 19:46:19,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:46:19,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 12655 transitions. [2023-08-25 19:46:19,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 527.2916666666666) internal successors, (12655), 24 states have internal predecessors, (12655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:46:19,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1449.0) internal successors, (36225), 25 states have internal predecessors, (36225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:46:19,378 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1449.0) internal successors, (36225), 25 states have internal predecessors, (36225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:46:19,378 INFO L175 Difference]: Start difference. First operand has 303 places, 466 transitions, 6923 flow. Second operand 24 states and 12655 transitions. [2023-08-25 19:46:19,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1065 transitions, 12122 flow [2023-08-25 19:46:27,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1065 transitions, 11924 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-08-25 19:46:27,698 INFO L231 Difference]: Finished difference. Result has 328 places, 513 transitions, 8439 flow [2023-08-25 19:46:27,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=6737, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8439, PETRI_PLACES=328, PETRI_TRANSITIONS=513} [2023-08-25 19:46:27,698 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 176 predicate places. [2023-08-25 19:46:27,699 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 513 transitions, 8439 flow [2023-08-25 19:46:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 502.48148148148147) internal successors, (13567), 27 states have internal predecessors, (13567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:46:27,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:46:27,701 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] [2023-08-25 19:46:27,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 19:46:27,902 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,SelfDestructingSolverStorable24 [2023-08-25 19:46:27,903 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-25 19:46:27,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:46:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash -927985503, now seen corresponding path program 5 times [2023-08-25 19:46:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:46:27,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423534761] [2023-08-25 19:46:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:46:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:46:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:46:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:46:28,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:46:28,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423534761] [2023-08-25 19:46:28,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423534761] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:46:28,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150562301] [2023-08-25 19:46:28,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:46:28,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:46:28,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:46:28,774 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) [2023-08-25 19:46:28,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 19:46:29,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 19:46:29,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:46:29,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 84 conjunts are in the unsatisfiable core [2023-08-25 19:46:29,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:46:30,058 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:46:30,058 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 23 treesize of output 15 [2023-08-25 19:46:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:46:30,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:46:31,009 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:46:31,009 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 25 treesize of output 18 [2023-08-25 19:46:31,022 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:46:31,023 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 25 treesize of output 14 [2023-08-25 19:46:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:46:31,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150562301] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:46:31,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:46:31,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 16] total 40 [2023-08-25 19:46:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090483401] [2023-08-25 19:46:31,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:46:31,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-25 19:46:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:46:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-25 19:46:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2023-08-25 19:46:31,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 519 out of 1449 [2023-08-25 19:46:31,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 513 transitions, 8439 flow. Second operand has 42 states, 42 states have (on average 522.452380952381) internal successors, (21943), 42 states have internal predecessors, (21943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:46:31,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:46:31,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 519 of 1449 [2023-08-25 19:46:31,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand