/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 -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/pthread-ext/26_stack_cas.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:30:08,190 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:30:08,266 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 [2023-08-24 18:30:08,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:30:08,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:30:08,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:30:08,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:30:08,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:30:08,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:30:08,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:30:08,310 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:30:08,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:30:08,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:30:08,311 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:30:08,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:30:08,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:30:08,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:30:08,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:30:08,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:30:08,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:30:08,313 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:30:08,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:30:08,317 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:30:08,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:30:08,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:30:08,318 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:30:08,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:30:08,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:30:08,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:30:08,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:30:08,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:30:08,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:30:08,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:30:08,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:30:08,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:30:08,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:30:08,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:30:08,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:30:08,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:30:08,629 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:30:08,630 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:30:08,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas.i [2023-08-24 18:30:09,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:30:10,119 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:30:10,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i [2023-08-24 18:30:10,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04f81c31b/f8b07864cb1146438b3210929821668d/FLAG52c76fca4 [2023-08-24 18:30:10,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04f81c31b/f8b07864cb1146438b3210929821668d [2023-08-24 18:30:10,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:30:10,149 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:30:10,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:30:10,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:30:10,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:30:10,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23decb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10, skipping insertion in model container [2023-08-24 18:30:10,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,205 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:30:10,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:30:10,598 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:30:10,630 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-24 18:30:10,632 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-24 18:30:10,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:30:10,716 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:30:10,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10 WrapperNode [2023-08-24 18:30:10,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:30:10,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:30:10,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:30:10,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:30:10,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,806 INFO L138 Inliner]: procedures = 177, calls = 48, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 323 [2023-08-24 18:30:10,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:30:10,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:30:10,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:30:10,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:30:10,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:30:10,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:30:10,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:30:10,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:30:10,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (1/1) ... [2023-08-24 18:30:10,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:30:10,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:30:10,919 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) [2023-08-24 18:30:10,930 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 [2023-08-24 18:30:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 18:30:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 18:30:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 18:30:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:30:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:30:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:30:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:30:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:30:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:30:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:30:10,954 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:30:11,090 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:30:11,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:30:11,489 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:30:11,751 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:30:11,751 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 18:30:11,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:30:11 BoogieIcfgContainer [2023-08-24 18:30:11,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:30:11,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:30:11,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:30:11,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:30:11,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:30:10" (1/3) ... [2023-08-24 18:30:11,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bea791e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:30:11, skipping insertion in model container [2023-08-24 18:30:11,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:30:10" (2/3) ... [2023-08-24 18:30:11,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bea791e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:30:11, skipping insertion in model container [2023-08-24 18:30:11,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:30:11" (3/3) ... [2023-08-24 18:30:11,763 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas.i [2023-08-24 18:30:11,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:30:11,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2023-08-24 18:30:11,780 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:30:11,911 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:30:11,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 182 transitions, 369 flow [2023-08-24 18:30:12,050 INFO L124 PetriNetUnfolderBase]: 11/192 cut-off events. [2023-08-24 18:30:12,050 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:30:12,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 192 events. 11/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 246 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 158. Up to 4 conditions per place. [2023-08-24 18:30:12,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 182 transitions, 369 flow [2023-08-24 18:30:12,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 182 transitions, 369 flow [2023-08-24 18:30:12,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:30:12,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 182 transitions, 369 flow [2023-08-24 18:30:12,083 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 182 transitions, 369 flow [2023-08-24 18:30:12,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 182 transitions, 369 flow [2023-08-24 18:30:12,143 INFO L124 PetriNetUnfolderBase]: 11/192 cut-off events. [2023-08-24 18:30:12,143 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:30:12,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 192 events. 11/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 246 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 158. Up to 4 conditions per place. [2023-08-24 18:30:12,150 INFO L119 LiptonReduction]: Number of co-enabled transitions 3796 [2023-08-24 18:30:19,415 INFO L134 LiptonReduction]: Checked pairs total: 4838 [2023-08-24 18:30:19,415 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-08-24 18:30:19,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:30:19,431 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;@be14694, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:30:19,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-08-24 18:30:19,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:30:19,434 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-24 18:30:19,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:30:19,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:30:19,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:30:19,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 51 more)] === [2023-08-24 18:30:19,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:30:19,439 INFO L85 PathProgramCache]: Analyzing trace with hash 38527557, now seen corresponding path program 1 times [2023-08-24 18:30:19,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:30:19,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192694888] [2023-08-24 18:30:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:30:19,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:30:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:30:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:30:19,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:30:19,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192694888] [2023-08-24 18:30:19,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192694888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:30:19,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:30:19,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:30:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408756092] [2023-08-24 18:30:19,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:30:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:30:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:30:19,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:30:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:30:19,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 388 [2023-08-24 18:30:19,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:19,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:30:19,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 388 [2023-08-24 18:30:19,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:30:19,755 INFO L124 PetriNetUnfolderBase]: 40/88 cut-off events. [2023-08-24 18:30:19,755 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:30:19,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 88 events. 40/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 192 event pairs, 28 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 168. Up to 88 conditions per place. [2023-08-24 18:30:19,757 INFO L140 encePairwiseOnDemand]: 359/388 looper letters, 22 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-24 18:30:19,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 23 transitions, 95 flow [2023-08-24 18:30:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:30:19,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:30:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 355 transitions. [2023-08-24 18:30:19,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574742268041237 [2023-08-24 18:30:19,773 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 355 transitions. [2023-08-24 18:30:19,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 355 transitions. [2023-08-24 18:30:19,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:30:19,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 355 transitions. [2023-08-24 18:30:19,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 177.5) internal successors, (355), 2 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:19,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:19,784 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:19,786 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 109 flow. Second operand 2 states and 355 transitions. [2023-08-24 18:30:19,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 23 transitions, 95 flow [2023-08-24 18:30:19,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 23 transitions, 95 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:30:19,789 INFO L231 Difference]: Finished difference. Result has 23 places, 23 transitions, 51 flow [2023-08-24 18:30:19,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=51, PETRI_PLACES=23, PETRI_TRANSITIONS=23} [2023-08-24 18:30:19,794 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -26 predicate places. [2023-08-24 18:30:19,794 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 23 transitions, 51 flow [2023-08-24 18:30:19,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:19,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:30:19,795 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 18:30:19,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:30:19,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 51 more)] === [2023-08-24 18:30:19,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:30:19,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1629622265, now seen corresponding path program 1 times [2023-08-24 18:30:19,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:30:19,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536454190] [2023-08-24 18:30:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:30:19,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:30:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:30:19,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:30:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:30:19,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:30:19,846 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:30:19,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2023-08-24 18:30:19,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (53 of 55 remaining) [2023-08-24 18:30:19,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (52 of 55 remaining) [2023-08-24 18:30:19,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (51 of 55 remaining) [2023-08-24 18:30:19,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (50 of 55 remaining) [2023-08-24 18:30:19,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (49 of 55 remaining) [2023-08-24 18:30:19,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (48 of 55 remaining) [2023-08-24 18:30:19,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (47 of 55 remaining) [2023-08-24 18:30:19,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (46 of 55 remaining) [2023-08-24 18:30:19,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (45 of 55 remaining) [2023-08-24 18:30:19,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (44 of 55 remaining) [2023-08-24 18:30:19,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (43 of 55 remaining) [2023-08-24 18:30:19,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (42 of 55 remaining) [2023-08-24 18:30:19,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (41 of 55 remaining) [2023-08-24 18:30:19,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (40 of 55 remaining) [2023-08-24 18:30:19,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (39 of 55 remaining) [2023-08-24 18:30:19,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (38 of 55 remaining) [2023-08-24 18:30:19,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (37 of 55 remaining) [2023-08-24 18:30:19,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (36 of 55 remaining) [2023-08-24 18:30:19,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (35 of 55 remaining) [2023-08-24 18:30:19,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONASSERT (34 of 55 remaining) [2023-08-24 18:30:19,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 55 remaining) [2023-08-24 18:30:19,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 55 remaining) [2023-08-24 18:30:19,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (31 of 55 remaining) [2023-08-24 18:30:19,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (30 of 55 remaining) [2023-08-24 18:30:19,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 55 remaining) [2023-08-24 18:30:19,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 55 remaining) [2023-08-24 18:30:19,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (27 of 55 remaining) [2023-08-24 18:30:19,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 55 remaining) [2023-08-24 18:30:19,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 55 remaining) [2023-08-24 18:30:19,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 55 remaining) [2023-08-24 18:30:19,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (23 of 55 remaining) [2023-08-24 18:30:19,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (22 of 55 remaining) [2023-08-24 18:30:19,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 55 remaining) [2023-08-24 18:30:19,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 55 remaining) [2023-08-24 18:30:19,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 55 remaining) [2023-08-24 18:30:19,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (18 of 55 remaining) [2023-08-24 18:30:19,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (17 of 55 remaining) [2023-08-24 18:30:19,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (16 of 55 remaining) [2023-08-24 18:30:19,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (15 of 55 remaining) [2023-08-24 18:30:19,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (14 of 55 remaining) [2023-08-24 18:30:19,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 55 remaining) [2023-08-24 18:30:19,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (12 of 55 remaining) [2023-08-24 18:30:19,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (11 of 55 remaining) [2023-08-24 18:30:19,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (10 of 55 remaining) [2023-08-24 18:30:19,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (9 of 55 remaining) [2023-08-24 18:30:19,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (8 of 55 remaining) [2023-08-24 18:30:19,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONASSERT (7 of 55 remaining) [2023-08-24 18:30:19,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (6 of 55 remaining) [2023-08-24 18:30:19,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (5 of 55 remaining) [2023-08-24 18:30:19,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 55 remaining) [2023-08-24 18:30:19,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (3 of 55 remaining) [2023-08-24 18:30:19,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (2 of 55 remaining) [2023-08-24 18:30:19,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (1 of 55 remaining) [2023-08-24 18:30:19,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 55 remaining) [2023-08-24 18:30:19,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:30:19,858 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:30:19,861 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:30:19,861 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 18:30:19,954 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:30:19,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 329 transitions, 670 flow [2023-08-24 18:30:20,016 INFO L124 PetriNetUnfolderBase]: 21/351 cut-off events. [2023-08-24 18:30:20,016 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:30:20,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 351 events. 21/351 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 961 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 304. Up to 6 conditions per place. [2023-08-24 18:30:20,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 329 transitions, 670 flow [2023-08-24 18:30:20,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 329 transitions, 670 flow [2023-08-24 18:30:20,026 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:30:20,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 329 transitions, 670 flow [2023-08-24 18:30:20,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 329 transitions, 670 flow [2023-08-24 18:30:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 329 transitions, 670 flow [2023-08-24 18:30:20,082 INFO L124 PetriNetUnfolderBase]: 21/351 cut-off events. [2023-08-24 18:30:20,083 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:30:20,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 351 events. 21/351 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 961 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 304. Up to 6 conditions per place. [2023-08-24 18:30:20,108 INFO L119 LiptonReduction]: Number of co-enabled transitions 50516 [2023-08-24 18:30:27,016 INFO L134 LiptonReduction]: Checked pairs total: 225313 [2023-08-24 18:30:27,016 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-24 18:30:27,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:30:27,019 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;@be14694, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:30:27,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 82 error locations. [2023-08-24 18:30:27,021 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:30:27,021 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:30:27,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:30:27,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:30:27,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:30:27,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-24 18:30:27,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:30:27,022 INFO L85 PathProgramCache]: Analyzing trace with hash 59285888, now seen corresponding path program 1 times [2023-08-24 18:30:27,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:30:27,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882046589] [2023-08-24 18:30:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:30:27,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:30:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:30:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:30:27,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:30:27,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882046589] [2023-08-24 18:30:27,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882046589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:30:27,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:30:27,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:30:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064882925] [2023-08-24 18:30:27,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:30:27,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:30:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:30:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:30:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:30:27,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 520 [2023-08-24 18:30:27,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 181 transitions, 374 flow. Second operand has 2 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:27,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:30:27,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 520 [2023-08-24 18:30:27,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:30:27,928 INFO L124 PetriNetUnfolderBase]: 2419/6035 cut-off events. [2023-08-24 18:30:27,928 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-24 18:30:27,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9900 conditions, 6035 events. 2419/6035 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 51614 event pairs, 1899 based on Foata normal form. 0/5186 useless extension candidates. Maximal degree in co-relation 6906. Up to 3774 conditions per place. [2023-08-24 18:30:27,961 INFO L140 encePairwiseOnDemand]: 485/520 looper letters, 63 selfloop transitions, 0 changer transitions 0/146 dead transitions. [2023-08-24 18:30:27,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 146 transitions, 430 flow [2023-08-24 18:30:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:30:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:30:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 640 transitions. [2023-08-24 18:30:27,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2023-08-24 18:30:27,967 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 640 transitions. [2023-08-24 18:30:27,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 640 transitions. [2023-08-24 18:30:27,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:30:27,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 640 transitions. [2023-08-24 18:30:27,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 320.0) internal successors, (640), 2 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:27,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 520.0) internal successors, (1560), 3 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:27,974 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 520.0) internal successors, (1560), 3 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:27,974 INFO L175 Difference]: Start difference. First operand has 172 places, 181 transitions, 374 flow. Second operand 2 states and 640 transitions. [2023-08-24 18:30:27,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 146 transitions, 430 flow [2023-08-24 18:30:27,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 146 transitions, 428 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 18:30:27,980 INFO L231 Difference]: Finished difference. Result has 142 places, 146 transitions, 302 flow [2023-08-24 18:30:27,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=302, PETRI_PLACES=142, PETRI_TRANSITIONS=146} [2023-08-24 18:30:27,981 INFO L281 CegarLoopForPetriNet]: 172 programPoint places, -30 predicate places. [2023-08-24 18:30:27,981 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 146 transitions, 302 flow [2023-08-24 18:30:27,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:27,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:30:27,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:30:27,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:30:27,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-24 18:30:27,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:30:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1139212544, now seen corresponding path program 1 times [2023-08-24 18:30:27,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:30:27,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570319242] [2023-08-24 18:30:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:30:27,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:30:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:30:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:30:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:30:28,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570319242] [2023-08-24 18:30:28,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570319242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:30:28,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:30:28,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:30:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872756525] [2023-08-24 18:30:28,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:30:28,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:30:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:30:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:30:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:30:28,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 520 [2023-08-24 18:30:28,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 146 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:28,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:30:28,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 520 [2023-08-24 18:30:28,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:30:29,577 INFO L124 PetriNetUnfolderBase]: 6146/14519 cut-off events. [2023-08-24 18:30:29,577 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-08-24 18:30:29,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24328 conditions, 14519 events. 6146/14519 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 138891 event pairs, 2280 based on Foata normal form. 0/12319 useless extension candidates. Maximal degree in co-relation 24323. Up to 4892 conditions per place. [2023-08-24 18:30:29,680 INFO L140 encePairwiseOnDemand]: 512/520 looper letters, 136 selfloop transitions, 6 changer transitions 0/215 dead transitions. [2023-08-24 18:30:29,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 215 transitions, 729 flow [2023-08-24 18:30:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:30:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:30:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-08-24 18:30:29,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2023-08-24 18:30:29,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-08-24 18:30:29,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-08-24 18:30:29,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:30:29,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-08-24 18:30:29,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:29,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 520.0) internal successors, (2080), 4 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:29,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 520.0) internal successors, (2080), 4 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:29,689 INFO L175 Difference]: Start difference. First operand has 142 places, 146 transitions, 302 flow. Second operand 3 states and 921 transitions. [2023-08-24 18:30:29,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 215 transitions, 729 flow [2023-08-24 18:30:29,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 215 transitions, 729 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:30:29,696 INFO L231 Difference]: Finished difference. Result has 146 places, 152 transitions, 354 flow [2023-08-24 18:30:29,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=146, PETRI_TRANSITIONS=152} [2023-08-24 18:30:29,699 INFO L281 CegarLoopForPetriNet]: 172 programPoint places, -26 predicate places. [2023-08-24 18:30:29,700 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 152 transitions, 354 flow [2023-08-24 18:30:29,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:29,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:30:29,700 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 18:30:29,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:30:29,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-24 18:30:29,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:30:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1991993966, now seen corresponding path program 1 times [2023-08-24 18:30:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:30:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039752764] [2023-08-24 18:30:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:30:29,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:30:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:30:29,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:30:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:30:29,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:30:29,753 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:30:29,754 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (81 of 82 remaining) [2023-08-24 18:30:29,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (80 of 82 remaining) [2023-08-24 18:30:29,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (79 of 82 remaining) [2023-08-24 18:30:29,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (78 of 82 remaining) [2023-08-24 18:30:29,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (77 of 82 remaining) [2023-08-24 18:30:29,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (76 of 82 remaining) [2023-08-24 18:30:29,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (75 of 82 remaining) [2023-08-24 18:30:29,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (74 of 82 remaining) [2023-08-24 18:30:29,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (73 of 82 remaining) [2023-08-24 18:30:29,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (72 of 82 remaining) [2023-08-24 18:30:29,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (71 of 82 remaining) [2023-08-24 18:30:29,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (70 of 82 remaining) [2023-08-24 18:30:29,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (69 of 82 remaining) [2023-08-24 18:30:29,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (68 of 82 remaining) [2023-08-24 18:30:29,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (67 of 82 remaining) [2023-08-24 18:30:29,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (66 of 82 remaining) [2023-08-24 18:30:29,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (65 of 82 remaining) [2023-08-24 18:30:29,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (64 of 82 remaining) [2023-08-24 18:30:29,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (63 of 82 remaining) [2023-08-24 18:30:29,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (62 of 82 remaining) [2023-08-24 18:30:29,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONASSERT (61 of 82 remaining) [2023-08-24 18:30:29,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (60 of 82 remaining) [2023-08-24 18:30:29,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (59 of 82 remaining) [2023-08-24 18:30:29,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (58 of 82 remaining) [2023-08-24 18:30:29,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (57 of 82 remaining) [2023-08-24 18:30:29,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (56 of 82 remaining) [2023-08-24 18:30:29,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (55 of 82 remaining) [2023-08-24 18:30:29,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (54 of 82 remaining) [2023-08-24 18:30:29,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (53 of 82 remaining) [2023-08-24 18:30:29,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (52 of 82 remaining) [2023-08-24 18:30:29,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (51 of 82 remaining) [2023-08-24 18:30:29,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (50 of 82 remaining) [2023-08-24 18:30:29,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (49 of 82 remaining) [2023-08-24 18:30:29,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (48 of 82 remaining) [2023-08-24 18:30:29,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (47 of 82 remaining) [2023-08-24 18:30:29,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (46 of 82 remaining) [2023-08-24 18:30:29,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (45 of 82 remaining) [2023-08-24 18:30:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (44 of 82 remaining) [2023-08-24 18:30:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (43 of 82 remaining) [2023-08-24 18:30:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (42 of 82 remaining) [2023-08-24 18:30:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (41 of 82 remaining) [2023-08-24 18:30:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (40 of 82 remaining) [2023-08-24 18:30:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (39 of 82 remaining) [2023-08-24 18:30:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (38 of 82 remaining) [2023-08-24 18:30:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (37 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (36 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (35 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONASSERT (34 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (31 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (30 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 82 remaining) [2023-08-24 18:30:29,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 82 remaining) [2023-08-24 18:30:29,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (27 of 82 remaining) [2023-08-24 18:30:29,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 82 remaining) [2023-08-24 18:30:29,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 82 remaining) [2023-08-24 18:30:29,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 82 remaining) [2023-08-24 18:30:29,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (23 of 82 remaining) [2023-08-24 18:30:29,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (22 of 82 remaining) [2023-08-24 18:30:29,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 82 remaining) [2023-08-24 18:30:29,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 82 remaining) [2023-08-24 18:30:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 82 remaining) [2023-08-24 18:30:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (18 of 82 remaining) [2023-08-24 18:30:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (17 of 82 remaining) [2023-08-24 18:30:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (16 of 82 remaining) [2023-08-24 18:30:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (15 of 82 remaining) [2023-08-24 18:30:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (14 of 82 remaining) [2023-08-24 18:30:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 82 remaining) [2023-08-24 18:30:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (12 of 82 remaining) [2023-08-24 18:30:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (11 of 82 remaining) [2023-08-24 18:30:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (10 of 82 remaining) [2023-08-24 18:30:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (9 of 82 remaining) [2023-08-24 18:30:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (8 of 82 remaining) [2023-08-24 18:30:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONASSERT (7 of 82 remaining) [2023-08-24 18:30:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (6 of 82 remaining) [2023-08-24 18:30:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (5 of 82 remaining) [2023-08-24 18:30:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 82 remaining) [2023-08-24 18:30:29,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (3 of 82 remaining) [2023-08-24 18:30:29,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (2 of 82 remaining) [2023-08-24 18:30:29,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (1 of 82 remaining) [2023-08-24 18:30:29,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 82 remaining) [2023-08-24 18:30:29,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:30:29,764 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-24 18:30:29,765 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:30:29,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 18:30:29,939 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:30:29,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 476 transitions, 973 flow [2023-08-24 18:30:30,072 INFO L124 PetriNetUnfolderBase]: 31/510 cut-off events. [2023-08-24 18:30:30,072 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:30:30,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 510 events. 31/510 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1881 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 450. Up to 8 conditions per place. [2023-08-24 18:30:30,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 476 transitions, 973 flow [2023-08-24 18:30:30,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 455 places, 476 transitions, 973 flow [2023-08-24 18:30:30,093 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:30:30,094 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 455 places, 476 transitions, 973 flow [2023-08-24 18:30:30,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 455 places, 476 transitions, 973 flow [2023-08-24 18:30:30,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 476 transitions, 973 flow [2023-08-24 18:30:30,197 INFO L124 PetriNetUnfolderBase]: 31/510 cut-off events. [2023-08-24 18:30:30,197 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:30:30,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 510 events. 31/510 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1881 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 450. Up to 8 conditions per place. [2023-08-24 18:30:30,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 140160 [2023-08-24 18:30:57,245 INFO L134 LiptonReduction]: Checked pairs total: 560616 [2023-08-24 18:30:57,245 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-08-24 18:30:57,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:30:57,248 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;@be14694, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:30:57,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 109 error locations. [2023-08-24 18:30:57,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:30:57,249 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:30:57,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:30:57,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:30:57,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:30:57,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 105 more)] === [2023-08-24 18:30:57,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:30:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash 87192516, now seen corresponding path program 1 times [2023-08-24 18:30:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:30:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262206459] [2023-08-24 18:30:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:30:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:30:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:30:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:30:57,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:30:57,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262206459] [2023-08-24 18:30:57,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262206459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:30:57,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:30:57,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:30:57,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355056080] [2023-08-24 18:30:57,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:30:57,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:30:57,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:30:57,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:30:57,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:30:57,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 760 [2023-08-24 18:30:57,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 267 transitions, 555 flow. Second operand has 2 states, 2 states have (on average 392.0) internal successors, (784), 2 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:30:57,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:30:57,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 760 [2023-08-24 18:30:57,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:31:15,901 INFO L124 PetriNetUnfolderBase]: 111081/207941 cut-off events. [2023-08-24 18:31:15,901 INFO L125 PetriNetUnfolderBase]: For 4294/4294 co-relation queries the response was YES. [2023-08-24 18:31:16,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359901 conditions, 207941 events. 111081/207941 cut-off events. For 4294/4294 co-relation queries the response was YES. Maximal size of possible extension queue 5024. Compared 2352853 event pairs, 89751 based on Foata normal form. 0/175183 useless extension candidates. Maximal degree in co-relation 148796. Up to 148992 conditions per place. [2023-08-24 18:31:17,414 INFO L140 encePairwiseOnDemand]: 708/760 looper letters, 96 selfloop transitions, 0 changer transitions 0/215 dead transitions. [2023-08-24 18:31:17,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 215 transitions, 643 flow [2023-08-24 18:31:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:31:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:31:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 928 transitions. [2023-08-24 18:31:17,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2023-08-24 18:31:17,417 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 928 transitions. [2023-08-24 18:31:17,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 928 transitions. [2023-08-24 18:31:17,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:31:17,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 928 transitions. [2023-08-24 18:31:17,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 464.0) internal successors, (928), 2 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:31:17,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 760.0) internal successors, (2280), 3 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:31:17,424 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 760.0) internal successors, (2280), 3 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:31:17,424 INFO L175 Difference]: Start difference. First operand has 253 places, 267 transitions, 555 flow. Second operand 2 states and 928 transitions. [2023-08-24 18:31:17,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 215 transitions, 643 flow [2023-08-24 18:31:17,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 215 transitions, 637 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-24 18:31:17,436 INFO L231 Difference]: Finished difference. Result has 208 places, 215 transitions, 445 flow [2023-08-24 18:31:17,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=760, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=445, PETRI_PLACES=208, PETRI_TRANSITIONS=215} [2023-08-24 18:31:17,437 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -45 predicate places. [2023-08-24 18:31:17,437 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 215 transitions, 445 flow [2023-08-24 18:31:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 392.0) internal successors, (784), 2 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:31:17,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:31:17,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:31:17,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:31:17,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 105 more)] === [2023-08-24 18:31:17,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:31:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2107264793, now seen corresponding path program 1 times [2023-08-24 18:31:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:31:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988167387] [2023-08-24 18:31:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:31:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:31:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:31:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:31:17,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:31:17,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988167387] [2023-08-24 18:31:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988167387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:31:17,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:31:17,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:31:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140588959] [2023-08-24 18:31:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:31:17,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:31:17,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:31:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:31:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:31:17,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 760 [2023-08-24 18:31:17,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 215 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:31:17,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:31:17,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 760 [2023-08-24 18:31:17,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:32:04,417 INFO L124 PetriNetUnfolderBase]: 319702/579625 cut-off events. [2023-08-24 18:32:04,417 INFO L125 PetriNetUnfolderBase]: For 5110/5110 co-relation queries the response was YES. [2023-08-24 18:32:05,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017044 conditions, 579625 events. 319702/579625 cut-off events. For 5110/5110 co-relation queries the response was YES. Maximal size of possible extension queue 13179. Compared 7088631 event pairs, 122907 based on Foata normal form. 0/478563 useless extension candidates. Maximal degree in co-relation 1017038. Up to 219047 conditions per place. [2023-08-24 18:32:08,263 INFO L140 encePairwiseOnDemand]: 748/760 looper letters, 202 selfloop transitions, 9 changer transitions 0/318 dead transitions. [2023-08-24 18:32:08,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 318 transitions, 1083 flow [2023-08-24 18:32:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:32:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:32:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1330 transitions. [2023-08-24 18:32:08,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-24 18:32:08,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1330 transitions. [2023-08-24 18:32:08,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1330 transitions. [2023-08-24 18:32:08,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:32:08,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1330 transitions. [2023-08-24 18:32:08,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:32:08,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 760.0) internal successors, (3040), 4 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:32:08,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 760.0) internal successors, (3040), 4 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:32:08,275 INFO L175 Difference]: Start difference. First operand has 208 places, 215 transitions, 445 flow. Second operand 3 states and 1330 transitions. [2023-08-24 18:32:08,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 318 transitions, 1083 flow [2023-08-24 18:32:08,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 318 transitions, 1083 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:32:08,282 INFO L231 Difference]: Finished difference. Result has 212 places, 224 transitions, 523 flow [2023-08-24 18:32:08,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=760, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=523, PETRI_PLACES=212, PETRI_TRANSITIONS=224} [2023-08-24 18:32:08,283 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -41 predicate places. [2023-08-24 18:32:08,283 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 224 transitions, 523 flow [2023-08-24 18:32:08,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:32:08,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:32:08,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:32:08,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:32:08,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 105 more)] === [2023-08-24 18:32:08,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:32:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1114421064, now seen corresponding path program 1 times [2023-08-24 18:32:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:32:08,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764856427] [2023-08-24 18:32:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:32:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:32:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:32:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:32:08,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:32:08,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764856427] [2023-08-24 18:32:08,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764856427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:32:08,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:32:08,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:32:08,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999743619] [2023-08-24 18:32:08,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:32:08,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:32:08,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:32:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:32:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:32:08,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 760 [2023-08-24 18:32:08,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 224 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 326.8333333333333) internal successors, (1961), 6 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:32:08,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:32:08,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 760 [2023-08-24 18:32:08,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand