/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread-atomic/peterson-b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 22:01:33,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 22:01:33,271 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 22:01:33,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 22:01:33,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 22:01:33,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 22:01:33,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 22:01:33,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 22:01:33,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 22:01:33,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 22:01:33,303 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 22:01:33,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 22:01:33,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 22:01:33,303 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 22:01:33,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 22:01:33,304 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 22:01:33,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 22:01:33,304 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 22:01:33,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 22:01:33,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 22:01:33,304 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 22:01:33,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 22:01:33,306 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 22:01:33,306 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 22:01:33,306 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 22:01:33,306 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 22:01:33,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 22:01:33,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:01:33,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 22:01:33,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 22:01:33,308 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 22:01:33,308 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 22:01:33,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 22:01:33,308 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 22:01:33,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 22:01:33,308 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 22:01:33,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 22:01:33,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 22:01:33,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 22:01:33,561 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 22:01:33,561 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 22:01:33,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson-b.i [2023-08-25 22:01:34,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 22:01:34,653 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 22:01:34,653 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson-b.i [2023-08-25 22:01:34,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147fd492d/1d11085be67d44e29e2cae09ace49a38/FLAGeba3ae423 [2023-08-25 22:01:34,692 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147fd492d/1d11085be67d44e29e2cae09ace49a38 [2023-08-25 22:01:34,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 22:01:34,699 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 22:01:34,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 22:01:34,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 22:01:34,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 22:01:34,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:01:34" (1/1) ... [2023-08-25 22:01:34,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df9c233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:34, skipping insertion in model container [2023-08-25 22:01:34,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:01:34" (1/1) ... [2023-08-25 22:01:34,746 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 22:01:35,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:01:35,017 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 22:01:35,036 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-25 22:01:35,037 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-25 22:01:35,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:01:35,081 INFO L206 MainTranslator]: Completed translation [2023-08-25 22:01:35,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35 WrapperNode [2023-08-25 22:01:35,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 22:01:35,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 22:01:35,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 22:01:35,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 22:01:35,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,131 INFO L138 Inliner]: procedures = 167, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143 [2023-08-25 22:01:35,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 22:01:35,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 22:01:35,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 22:01:35,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 22:01:35,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 22:01:35,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 22:01:35,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 22:01:35,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 22:01:35,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (1/1) ... [2023-08-25 22:01:35,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:01:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:01:35,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 22:01:35,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 22:01:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 22:01:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-25 22:01:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-25 22:01:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-25 22:01:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-25 22:01:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 22:01:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 22:01:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 22:01:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 22:01:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 22:01:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 22:01:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 22:01:35,218 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 22:01:35,408 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 22:01:35,409 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 22:01:35,665 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 22:01:35,673 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 22:01:35,674 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 22:01:35,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:01:35 BoogieIcfgContainer [2023-08-25 22:01:35,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 22:01:35,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 22:01:35,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 22:01:35,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 22:01:35,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 10:01:34" (1/3) ... [2023-08-25 22:01:35,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc5bd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:01:35, skipping insertion in model container [2023-08-25 22:01:35,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:01:35" (2/3) ... [2023-08-25 22:01:35,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc5bd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:01:35, skipping insertion in model container [2023-08-25 22:01:35,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:01:35" (3/3) ... [2023-08-25 22:01:35,682 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson-b.i [2023-08-25 22:01:35,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 22:01:35,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-25 22:01:35,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 22:01:35,797 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 22:01:35,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 162 transitions, 340 flow [2023-08-25 22:01:35,886 INFO L124 PetriNetUnfolderBase]: 10/160 cut-off events. [2023-08-25 22:01:35,887 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:01:35,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 160 events. 10/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 329 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-08-25 22:01:35,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 162 transitions, 340 flow [2023-08-25 22:01:35,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 151 transitions, 311 flow [2023-08-25 22:01:35,901 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:01:35,909 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 151 transitions, 311 flow [2023-08-25 22:01:35,912 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 151 transitions, 311 flow [2023-08-25 22:01:35,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 151 transitions, 311 flow [2023-08-25 22:01:35,948 INFO L124 PetriNetUnfolderBase]: 10/151 cut-off events. [2023-08-25 22:01:35,949 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 22:01:35,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 151 events. 10/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 330 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-08-25 22:01:35,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 9396 [2023-08-25 22:01:37,520 INFO L134 LiptonReduction]: Checked pairs total: 33507 [2023-08-25 22:01:37,520 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-25 22:01:37,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:01:37,536 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;@6fb52192, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:01:37,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-25 22:01:37,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:01:37,538 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-25 22:01:37,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:01:37,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:01:37,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 22:01:37,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-25 22:01:37,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:01:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash 572533813, now seen corresponding path program 1 times [2023-08-25 22:01:37,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:01:37,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922231259] [2023-08-25 22:01:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:01:37,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:01:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:01:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:01:37,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:01:37,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922231259] [2023-08-25 22:01:37,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922231259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:01:37,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:01:37,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:01:37,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288992185] [2023-08-25 22:01:37,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:01:37,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:01:37,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:01:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:01:37,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:01:37,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 256 [2023-08-25 22:01:37,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:37,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:01:37,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 256 [2023-08-25 22:01:37,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:01:37,874 INFO L124 PetriNetUnfolderBase]: 1084/2333 cut-off events. [2023-08-25 22:01:37,874 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-25 22:01:37,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4153 conditions, 2333 events. 1084/2333 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 14578 event pairs, 820 based on Foata normal form. 72/1956 useless extension candidates. Maximal degree in co-relation 3990. Up to 1566 conditions per place. [2023-08-25 22:01:37,886 INFO L140 encePairwiseOnDemand]: 243/256 looper letters, 60 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2023-08-25 22:01:37,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 324 flow [2023-08-25 22:01:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:01:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:01:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-25 22:01:37,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6432291666666666 [2023-08-25 22:01:37,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-25 22:01:37,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-25 22:01:37,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:01:37,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-25 22:01:37,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:37,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:37,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:37,911 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 171 flow. Second operand 3 states and 494 transitions. [2023-08-25 22:01:37,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 324 flow [2023-08-25 22:01:37,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 318 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 22:01:37,916 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 174 flow [2023-08-25 22:01:37,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2023-08-25 22:01:37,920 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2023-08-25 22:01:37,920 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 174 flow [2023-08-25 22:01:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:37,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:01:37,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:01:37,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 22:01:37,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-25 22:01:37,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:01:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash 483409270, now seen corresponding path program 1 times [2023-08-25 22:01:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:01:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548861552] [2023-08-25 22:01:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:01:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:01:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:01:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:01:37,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:01:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548861552] [2023-08-25 22:01:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548861552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:01:37,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:01:37,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:01:37,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574535821] [2023-08-25 22:01:37,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:01:37,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:01:37,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:01:37,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:01:37,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:01:38,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 256 [2023-08-25 22:01:38,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:01:38,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 256 [2023-08-25 22:01:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:01:38,198 INFO L124 PetriNetUnfolderBase]: 1145/2490 cut-off events. [2023-08-25 22:01:38,198 INFO L125 PetriNetUnfolderBase]: For 226/253 co-relation queries the response was YES. [2023-08-25 22:01:38,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 2490 events. 1145/2490 cut-off events. For 226/253 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16028 event pairs, 841 based on Foata normal form. 0/2012 useless extension candidates. Maximal degree in co-relation 3512. Up to 1661 conditions per place. [2023-08-25 22:01:38,209 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 62 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-25 22:01:38,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 361 flow [2023-08-25 22:01:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:01:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:01:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-25 22:01:38,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62890625 [2023-08-25 22:01:38,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-25 22:01:38,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-25 22:01:38,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:01:38,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-25 22:01:38,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,214 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 174 flow. Second operand 3 states and 483 transitions. [2023-08-25 22:01:38,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 361 flow [2023-08-25 22:01:38,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:01:38,217 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 196 flow [2023-08-25 22:01:38,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2023-08-25 22:01:38,217 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2023-08-25 22:01:38,218 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 196 flow [2023-08-25 22:01:38,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:01:38,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:01:38,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 22:01:38,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-25 22:01:38,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:01:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1040218407, now seen corresponding path program 1 times [2023-08-25 22:01:38,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:01:38,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757126870] [2023-08-25 22:01:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:01:38,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:01:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:01:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:01:38,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:01:38,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757126870] [2023-08-25 22:01:38,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757126870] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:01:38,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:01:38,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:01:38,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607646650] [2023-08-25 22:01:38,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:01:38,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:01:38,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:01:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:01:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:01:38,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 256 [2023-08-25 22:01:38,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:01:38,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 256 [2023-08-25 22:01:38,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:01:38,461 INFO L124 PetriNetUnfolderBase]: 1259/2664 cut-off events. [2023-08-25 22:01:38,462 INFO L125 PetriNetUnfolderBase]: For 317/370 co-relation queries the response was YES. [2023-08-25 22:01:38,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 2664 events. 1259/2664 cut-off events. For 317/370 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17371 event pairs, 967 based on Foata normal form. 0/2134 useless extension candidates. Maximal degree in co-relation 3850. Up to 1935 conditions per place. [2023-08-25 22:01:38,471 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 63 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-08-25 22:01:38,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 384 flow [2023-08-25 22:01:38,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:01:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:01:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-25 22:01:38,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2023-08-25 22:01:38,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-25 22:01:38,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-25 22:01:38,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:01:38,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-25 22:01:38,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,475 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 196 flow. Second operand 3 states and 474 transitions. [2023-08-25 22:01:38,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 384 flow [2023-08-25 22:01:38,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:01:38,478 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 214 flow [2023-08-25 22:01:38,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-08-25 22:01:38,478 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-08-25 22:01:38,479 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 214 flow [2023-08-25 22:01:38,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:01:38,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:01:38,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 22:01:38,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-25 22:01:38,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:01:38,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1077413557, now seen corresponding path program 1 times [2023-08-25 22:01:38,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:01:38,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377710474] [2023-08-25 22:01:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:01:38,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:01:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:01:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:01:38,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:01:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377710474] [2023-08-25 22:01:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377710474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:01:38,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:01:38,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:01:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657420596] [2023-08-25 22:01:38,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:01:38,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:01:38,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:01:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:01:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:01:38,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 256 [2023-08-25 22:01:38,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:01:38,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 256 [2023-08-25 22:01:38,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:01:38,726 INFO L124 PetriNetUnfolderBase]: 1745/3804 cut-off events. [2023-08-25 22:01:38,726 INFO L125 PetriNetUnfolderBase]: For 412/457 co-relation queries the response was YES. [2023-08-25 22:01:38,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7371 conditions, 3804 events. 1745/3804 cut-off events. For 412/457 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 27132 event pairs, 530 based on Foata normal form. 0/3095 useless extension candidates. Maximal degree in co-relation 6202. Up to 1542 conditions per place. [2023-08-25 22:01:38,741 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 77 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-08-25 22:01:38,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 113 transitions, 461 flow [2023-08-25 22:01:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:01:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:01:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-25 22:01:38,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6497395833333334 [2023-08-25 22:01:38,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-25 22:01:38,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-25 22:01:38,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:01:38,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-25 22:01:38,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,746 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 214 flow. Second operand 3 states and 499 transitions. [2023-08-25 22:01:38,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 113 transitions, 461 flow [2023-08-25 22:01:38,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 113 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:01:38,749 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 258 flow [2023-08-25 22:01:38,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2023-08-25 22:01:38,749 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-08-25 22:01:38,750 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 258 flow [2023-08-25 22:01:38,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:01:38,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:01:38,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 22:01:38,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-25 22:01:38,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:01:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash 220740320, now seen corresponding path program 1 times [2023-08-25 22:01:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:01:38,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858651021] [2023-08-25 22:01:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:01:38,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:01:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:01:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:01:38,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:01:38,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858651021] [2023-08-25 22:01:38,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858651021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:01:38,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:01:38,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:01:38,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472083729] [2023-08-25 22:01:38,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:01:38,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:01:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:01:38,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:01:38,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:01:38,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 256 [2023-08-25 22:01:38,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:38,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:01:38,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 256 [2023-08-25 22:01:38,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:01:39,025 INFO L124 PetriNetUnfolderBase]: 2130/4379 cut-off events. [2023-08-25 22:01:39,025 INFO L125 PetriNetUnfolderBase]: For 786/913 co-relation queries the response was YES. [2023-08-25 22:01:39,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 4379 events. 2130/4379 cut-off events. For 786/913 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 31253 event pairs, 1470 based on Foata normal form. 26/3524 useless extension candidates. Maximal degree in co-relation 7468. Up to 3200 conditions per place. [2023-08-25 22:01:39,041 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 67 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2023-08-25 22:01:39,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 106 transitions, 457 flow [2023-08-25 22:01:39,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:01:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:01:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-25 22:01:39,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2023-08-25 22:01:39,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-25 22:01:39,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-25 22:01:39,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:01:39,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-25 22:01:39,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,046 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 258 flow. Second operand 3 states and 474 transitions. [2023-08-25 22:01:39,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 106 transitions, 457 flow [2023-08-25 22:01:39,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:01:39,049 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 279 flow [2023-08-25 22:01:39,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2023-08-25 22:01:39,049 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2023-08-25 22:01:39,049 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 279 flow [2023-08-25 22:01:39,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:01:39,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:01:39,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 22:01:39,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-25 22:01:39,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:01:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1678209179, now seen corresponding path program 1 times [2023-08-25 22:01:39,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:01:39,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177611565] [2023-08-25 22:01:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:01:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:01:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:01:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:01:39,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:01:39,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177611565] [2023-08-25 22:01:39,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177611565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:01:39,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:01:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:01:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511820862] [2023-08-25 22:01:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:01:39,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:01:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:01:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:01:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:01:39,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 256 [2023-08-25 22:01:39,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:01:39,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 256 [2023-08-25 22:01:39,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:01:39,429 INFO L124 PetriNetUnfolderBase]: 2722/5763 cut-off events. [2023-08-25 22:01:39,429 INFO L125 PetriNetUnfolderBase]: For 1316/1492 co-relation queries the response was YES. [2023-08-25 22:01:39,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11831 conditions, 5763 events. 2722/5763 cut-off events. For 1316/1492 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 43790 event pairs, 806 based on Foata normal form. 24/4747 useless extension candidates. Maximal degree in co-relation 8702. Up to 2304 conditions per place. [2023-08-25 22:01:39,453 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 82 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-25 22:01:39,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 546 flow [2023-08-25 22:01:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:01:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:01:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-25 22:01:39,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6471354166666666 [2023-08-25 22:01:39,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-25 22:01:39,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-25 22:01:39,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:01:39,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-25 22:01:39,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,458 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 279 flow. Second operand 3 states and 497 transitions. [2023-08-25 22:01:39,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 546 flow [2023-08-25 22:01:39,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 541 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:01:39,461 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 322 flow [2023-08-25 22:01:39,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-08-25 22:01:39,461 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2023-08-25 22:01:39,462 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 322 flow [2023-08-25 22:01:39,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:01:39,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:01:39,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 22:01:39,462 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-25 22:01:39,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:01:39,463 INFO L85 PathProgramCache]: Analyzing trace with hash -936206302, now seen corresponding path program 1 times [2023-08-25 22:01:39,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:01:39,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725074853] [2023-08-25 22:01:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:01:39,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:01:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:01:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:01:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:01:39,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725074853] [2023-08-25 22:01:39,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725074853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:01:39,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:01:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:01:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698133856] [2023-08-25 22:01:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:01:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:01:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:01:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:01:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:01:39,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 256 [2023-08-25 22:01:39,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:39,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:01:39,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 256 [2023-08-25 22:01:39,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:01:40,038 INFO L124 PetriNetUnfolderBase]: 5247/11010 cut-off events. [2023-08-25 22:01:40,038 INFO L125 PetriNetUnfolderBase]: For 3091/3460 co-relation queries the response was YES. [2023-08-25 22:01:40,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22906 conditions, 11010 events. 5247/11010 cut-off events. For 3091/3460 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 94932 event pairs, 1807 based on Foata normal form. 80/9065 useless extension candidates. Maximal degree in co-relation 15768. Up to 4330 conditions per place. [2023-08-25 22:01:40,082 INFO L140 encePairwiseOnDemand]: 248/256 looper letters, 94 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2023-08-25 22:01:40,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 139 transitions, 679 flow [2023-08-25 22:01:40,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:01:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:01:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-25 22:01:40,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2023-08-25 22:01:40,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-25 22:01:40,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-25 22:01:40,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:01:40,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-25 22:01:40,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:40,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:40,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:40,086 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 322 flow. Second operand 3 states and 498 transitions. [2023-08-25 22:01:40,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 139 transitions, 679 flow [2023-08-25 22:01:40,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 139 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:01:40,091 INFO L231 Difference]: Finished difference. Result has 86 places, 100 transitions, 396 flow [2023-08-25 22:01:40,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=86, PETRI_TRANSITIONS=100} [2023-08-25 22:01:40,091 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2023-08-25 22:01:40,091 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 100 transitions, 396 flow [2023-08-25 22:01:40,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:01:40,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:01:40,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:01:40,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 22:01:40,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-25 22:01:40,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:01:40,092 INFO L85 PathProgramCache]: Analyzing trace with hash -268228267, now seen corresponding path program 1 times [2023-08-25 22:01:40,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:01:40,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507918406] [2023-08-25 22:01:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:01:40,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:01:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:01:40,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:01:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:01:40,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:01:40,153 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:01:40,153 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr2Err0ASSERT_VIOLATIONDATA_RACE (35 of 36 remaining) [2023-08-25 22:01:40,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONASSERT (28 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-08-25 22:01:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONASSERT (20 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-08-25 22:01:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONASSERT (9 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-08-25 22:01:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-08-25 22:01:40,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-08-25 22:01:40,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONASSERT (1 of 36 remaining) [2023-08-25 22:01:40,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-08-25 22:01:40,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 22:01:40,158 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:01:40,162 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 22:01:40,162 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 22:01:40,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 10:01:40 BasicIcfg [2023-08-25 22:01:40,187 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 22:01:40,188 INFO L158 Benchmark]: Toolchain (without parser) took 5489.18ms. Allocated memory was 333.4MB in the beginning and 526.4MB in the end (delta: 192.9MB). Free memory was 308.5MB in the beginning and 249.3MB in the end (delta: 59.2MB). Peak memory consumption was 252.7MB. Max. memory is 16.0GB. [2023-08-25 22:01:40,188 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 333.4MB. Free memory is still 309.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 22:01:40,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.12ms. Allocated memory is still 333.4MB. Free memory was 308.0MB in the beginning and 288.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 22:01:40,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.23ms. Allocated memory is still 333.4MB. Free memory was 288.1MB in the beginning and 286.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 22:01:40,189 INFO L158 Benchmark]: Boogie Preprocessor took 35.23ms. Allocated memory is still 333.4MB. Free memory was 286.0MB in the beginning and 284.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 22:01:40,189 INFO L158 Benchmark]: RCFGBuilder took 507.98ms. Allocated memory is still 333.4MB. Free memory was 284.3MB in the beginning and 267.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-25 22:01:40,189 INFO L158 Benchmark]: TraceAbstraction took 4509.71ms. Allocated memory was 333.4MB in the beginning and 526.4MB in the end (delta: 192.9MB). Free memory was 266.6MB in the beginning and 249.3MB in the end (delta: 17.3MB). Peak memory consumption was 210.8MB. Max. memory is 16.0GB. [2023-08-25 22:01:40,190 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 333.4MB. Free memory is still 309.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 383.12ms. Allocated memory is still 333.4MB. Free memory was 308.0MB in the beginning and 288.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.23ms. Allocated memory is still 333.4MB. Free memory was 288.1MB in the beginning and 286.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.23ms. Allocated memory is still 333.4MB. Free memory was 286.0MB in the beginning and 284.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 507.98ms. Allocated memory is still 333.4MB. Free memory was 284.3MB in the beginning and 267.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4509.71ms. Allocated memory was 333.4MB in the beginning and 526.4MB in the end (delta: 192.9MB). Free memory was 266.6MB in the beginning and 249.3MB in the end (delta: 17.3MB). Peak memory consumption was 210.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 148 PlacesBefore, 78 PlacesAfterwards, 151 TransitionsBefore, 81 TransitionsAfterwards, 9396 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 94 TotalNumberOfCompositions, 33507 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14724, independent: 14113, independent conditional: 0, independent unconditional: 14113, dependent: 611, dependent conditional: 0, dependent unconditional: 611, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4868, independent: 4766, independent conditional: 0, independent unconditional: 4766, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14724, independent: 9347, independent conditional: 0, independent unconditional: 9347, dependent: 509, dependent conditional: 0, dependent unconditional: 509, unknown: 4868, unknown conditional: 0, unknown unconditional: 4868] , Statistics on independence cache: Total cache size (in pairs): 1042, Positive cache size: 976, Positive conditional cache size: 0, Positive unconditional cache size: 976, Negative cache size: 66, Negative conditional cache size: 0, Negative unconditional cache size: 66, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 697]: Data race detected Data race detected The following path leads to a data race: [L684] 0 int flag1 = 0, flag2 = 0; [L685] 0 int turn; [L686] 0 int x; [L706] 0 pthread_t t1, t2; [L707] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [flag1=0, flag2=0, pthread_create(&t1, 0, thr1, 0)=0, t1={5:0}, t2={3:0}, turn=0, x=0] [L688] 1 flag1 = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2=0, turn=0, x=0] [L689] 1 turn = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2=0, turn=1, x=0] [L708] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [flag1=1, flag2=0, pthread_create(&t2, 0, thr2, 0)=1, t1={5:0}, t2={3:0}, turn=1, x=0] [L697] 2 flag2 = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2 = 1=51, flag2=1, turn=1, x=0] [L690] 1 flag2==1 VAL [_={0:0}, _={0:0}, flag1=1, flag2=1, turn=1, x=0] [L697] 2 flag2 = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2 = 1=51, flag2=1, turn=1, x=0] Now there is a data race on ~flag2~0 between C: flag2==1 [690] and C: flag2 = 1 [697] - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 688]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 689]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 255 locations, 36 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 708 IncrementalHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 42 mSDtfsCounter, 708 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=7, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-25 22:01:40,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...