/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems-b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:49:09,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:49:09,152 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 07:49:09,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:49:09,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:49:09,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:49:09,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:49:09,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:49:09,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:49:09,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:49:09,211 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:49:09,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:49:09,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:49:09,212 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:49:09,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:49:09,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:49:09,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:49:09,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:49:09,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:49:09,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:49:09,214 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:49:09,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:49:09,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:49:09,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:49:09,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:49:09,215 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:49:09,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:49:09,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:49:09,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:49:09,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:49:09,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:49:09,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:49:09,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:49:09,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:49:09,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:49:09,218 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:49:09,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:49:09,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:49:09,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:49:09,566 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:49:09,567 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:49:09,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems-b.i [2023-08-25 07:49:10,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:49:11,076 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:49:11,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems-b.i [2023-08-25 07:49:11,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ae0e3ef/f807cc7526024f4aaacb9865914c0f96/FLAG90c16088d [2023-08-25 07:49:11,119 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ae0e3ef/f807cc7526024f4aaacb9865914c0f96 [2023-08-25 07:49:11,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:49:11,122 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:49:11,125 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:49:11,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:49:11,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:49:11,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fc98f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11, skipping insertion in model container [2023-08-25 07:49:11,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,185 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:49:11,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:49:11,620 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:49:11,647 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-25 07:49:11,649 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-25 07:49:11,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:49:11,763 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:49:11,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11 WrapperNode [2023-08-25 07:49:11,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:49:11,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:49:11,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:49:11,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:49:11,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,808 INFO L138 Inliner]: procedures = 323, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-08-25 07:49:11,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:49:11,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:49:11,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:49:11,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:49:11,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:49:11,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:49:11,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:49:11,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:49:11,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (1/1) ... [2023-08-25 07:49:11,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:49:11,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:49:11,883 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 07:49:11,896 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 07:49:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:49:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:49:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:49:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-08-25 07:49:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-08-25 07:49:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 07:49:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 07:49:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 07:49:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 07:49:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 07:49:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 07:49:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:49:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 07:49:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:49:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:49:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:49:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:49:11,950 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 07:49:12,109 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:49:12,111 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:49:12,415 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:49:12,422 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:49:12,423 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-25 07:49:12,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:49:12 BoogieIcfgContainer [2023-08-25 07:49:12,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:49:12,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:49:12,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:49:12,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:49:12,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:49:11" (1/3) ... [2023-08-25 07:49:12,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ca1f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:49:12, skipping insertion in model container [2023-08-25 07:49:12,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:49:11" (2/3) ... [2023-08-25 07:49:12,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ca1f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:49:12, skipping insertion in model container [2023-08-25 07:49:12,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:49:12" (3/3) ... [2023-08-25 07:49:12,432 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems-b.i [2023-08-25 07:49:12,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:49:12,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-25 07:49:12,449 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:49:12,568 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-08-25 07:49:12,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 308 transitions, 723 flow [2023-08-25 07:49:12,741 INFO L124 PetriNetUnfolderBase]: 8/221 cut-off events. [2023-08-25 07:49:12,741 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 07:49:12,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 221 events. 8/221 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 233 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2023-08-25 07:49:12,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 308 transitions, 723 flow [2023-08-25 07:49:12,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 208 transitions, 467 flow [2023-08-25 07:49:12,761 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:49:12,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 208 transitions, 467 flow [2023-08-25 07:49:12,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 208 transitions, 467 flow [2023-08-25 07:49:12,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 208 transitions, 467 flow [2023-08-25 07:49:12,848 INFO L124 PetriNetUnfolderBase]: 6/208 cut-off events. [2023-08-25 07:49:12,848 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 07:49:12,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 208 events. 6/208 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 210 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-08-25 07:49:12,854 INFO L119 LiptonReduction]: Number of co-enabled transitions 7920 [2023-08-25 07:49:16,438 INFO L134 LiptonReduction]: Checked pairs total: 55113 [2023-08-25 07:49:16,439 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-25 07:49:16,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:49:16,456 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;@cbfaa81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:49:16,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-25 07:49:16,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:49:16,460 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-25 07:49:16,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:49:16,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:49:16,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 07:49:16,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-25 07:49:16,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:49:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash 697174703, now seen corresponding path program 1 times [2023-08-25 07:49:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:49:16,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095112784] [2023-08-25 07:49:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:49:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:49:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:49:16,665 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 07:49:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:49:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095112784] [2023-08-25 07:49:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095112784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:49:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:49:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 07:49:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134529610] [2023-08-25 07:49:16,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:49:16,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:49:16,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:49:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:49:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:49:16,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 426 [2023-08-25 07:49:16,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 261 flow. Second operand has 2 states, 2 states have (on average 278.5) internal successors, (557), 2 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 07:49:16,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:49:16,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 426 [2023-08-25 07:49:16,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:49:17,905 INFO L124 PetriNetUnfolderBase]: 4535/9994 cut-off events. [2023-08-25 07:49:17,906 INFO L125 PetriNetUnfolderBase]: For 606/614 co-relation queries the response was YES. [2023-08-25 07:49:17,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16779 conditions, 9994 events. 4535/9994 cut-off events. For 606/614 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 87862 event pairs, 4363 based on Foata normal form. 0/8818 useless extension candidates. Maximal degree in co-relation 16760. Up to 6087 conditions per place. [2023-08-25 07:49:18,002 INFO L140 encePairwiseOnDemand]: 421/426 looper letters, 41 selfloop transitions, 0 changer transitions 0/100 dead transitions. [2023-08-25 07:49:18,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 100 transitions, 333 flow [2023-08-25 07:49:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:49:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:49:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 598 transitions. [2023-08-25 07:49:18,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7018779342723005 [2023-08-25 07:49:18,023 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 598 transitions. [2023-08-25 07:49:18,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 598 transitions. [2023-08-25 07:49:18,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:49:18,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 598 transitions. [2023-08-25 07:49:18,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 07:49:18,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 426.0) internal successors, (1278), 3 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 07:49:18,040 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 426.0) internal successors, (1278), 3 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 07:49:18,042 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 261 flow. Second operand 2 states and 598 transitions. [2023-08-25 07:49:18,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 100 transitions, 333 flow [2023-08-25 07:49:18,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 299 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-25 07:49:18,061 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 217 flow [2023-08-25 07:49:18,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=217, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2023-08-25 07:49:18,068 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -16 predicate places. [2023-08-25 07:49:18,068 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 217 flow [2023-08-25 07:49:18,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 278.5) internal successors, (557), 2 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 07:49:18,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:49:18,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:49:18,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:49:18,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-25 07:49:18,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:49:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1830029374, now seen corresponding path program 1 times [2023-08-25 07:49:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:49:18,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106098092] [2023-08-25 07:49:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:49:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:49:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:49:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:49:18,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:49:18,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106098092] [2023-08-25 07:49:18,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106098092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:49:18,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:49:18,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:49:18,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620331744] [2023-08-25 07:49:18,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:49:18,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:49:18,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:49:18,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:49:18,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:49:18,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 426 [2023-08-25 07:49:18,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 07:49:18,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:49:18,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 426 [2023-08-25 07:49:18,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:49:52,100 INFO L124 PetriNetUnfolderBase]: 444213/564854 cut-off events. [2023-08-25 07:49:52,100 INFO L125 PetriNetUnfolderBase]: For 1090/1090 co-relation queries the response was YES. [2023-08-25 07:49:53,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127625 conditions, 564854 events. 444213/564854 cut-off events. For 1090/1090 co-relation queries the response was YES. Maximal size of possible extension queue 13332. Compared 3710694 event pairs, 226400 based on Foata normal form. 0/456618 useless extension candidates. Maximal degree in co-relation 1127622. Up to 356011 conditions per place. [2023-08-25 07:49:55,688 INFO L140 encePairwiseOnDemand]: 416/426 looper letters, 351 selfloop transitions, 21 changer transitions 0/390 dead transitions. [2023-08-25 07:49:55,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 390 transitions, 1602 flow [2023-08-25 07:49:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:49:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:49:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1525 transitions. [2023-08-25 07:49:55,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966353677621283 [2023-08-25 07:49:55,692 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1525 transitions. [2023-08-25 07:49:55,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1525 transitions. [2023-08-25 07:49:55,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:49:55,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1525 transitions. [2023-08-25 07:49:55,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states 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 07:49:55,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states 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 07:49:55,702 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states 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 07:49:55,702 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 217 flow. Second operand 6 states and 1525 transitions. [2023-08-25 07:49:55,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 390 transitions, 1602 flow [2023-08-25 07:49:55,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 390 transitions, 1602 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:49:55,709 INFO L231 Difference]: Finished difference. Result has 113 places, 120 transitions, 359 flow [2023-08-25 07:49:55,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=113, PETRI_TRANSITIONS=120} [2023-08-25 07:49:55,710 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -6 predicate places. [2023-08-25 07:49:55,711 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 120 transitions, 359 flow [2023-08-25 07:49:55,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 07:49:55,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:49:55,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:49:55,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:49:55,712 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-25 07:49:55,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:49:55,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1230947112, now seen corresponding path program 1 times [2023-08-25 07:49:55,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:49:55,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800116116] [2023-08-25 07:49:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:49:55,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:49:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:49:55,999 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 07:49:55,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:49:56,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800116116] [2023-08-25 07:49:56,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800116116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:49:56,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:49:56,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:49:56,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990458846] [2023-08-25 07:49:56,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:49:56,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:49:56,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:49:56,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:49:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:49:56,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 426 [2023-08-25 07:49:56,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 120 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states 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 07:49:56,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:49:56,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 426 [2023-08-25 07:49:56,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:50:31,533 INFO L124 PetriNetUnfolderBase]: 444194/565923 cut-off events. [2023-08-25 07:50:31,533 INFO L125 PetriNetUnfolderBase]: For 252418/252574 co-relation queries the response was YES. [2023-08-25 07:50:33,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372098 conditions, 565923 events. 444194/565923 cut-off events. For 252418/252574 co-relation queries the response was YES. Maximal size of possible extension queue 13325. Compared 3715426 event pairs, 165881 based on Foata normal form. 22/467404 useless extension candidates. Maximal degree in co-relation 1372090. Up to 551123 conditions per place. [2023-08-25 07:50:35,971 INFO L140 encePairwiseOnDemand]: 417/426 looper letters, 144 selfloop transitions, 24 changer transitions 0/186 dead transitions. [2023-08-25 07:50:35,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 186 transitions, 974 flow [2023-08-25 07:50:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:50:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:50:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1291 transitions. [2023-08-25 07:50:35,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050860719874805 [2023-08-25 07:50:35,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1291 transitions. [2023-08-25 07:50:35,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1291 transitions. [2023-08-25 07:50:35,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:50:35,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1291 transitions. [2023-08-25 07:50:35,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states 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 07:50:35,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states 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 07:50:35,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states 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 07:50:35,988 INFO L175 Difference]: Start difference. First operand has 113 places, 120 transitions, 359 flow. Second operand 6 states and 1291 transitions. [2023-08-25 07:50:35,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 186 transitions, 974 flow [2023-08-25 07:51:01,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 186 transitions, 974 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:51:01,137 INFO L231 Difference]: Finished difference. Result has 118 places, 139 transitions, 578 flow [2023-08-25 07:51:01,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=578, PETRI_PLACES=118, PETRI_TRANSITIONS=139} [2023-08-25 07:51:01,137 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2023-08-25 07:51:01,138 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 139 transitions, 578 flow [2023-08-25 07:51:01,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states 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 07:51:01,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:51:01,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:51:01,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:51:01,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-25 07:51:01,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:51:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash 57894360, now seen corresponding path program 1 times [2023-08-25 07:51:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:51:01,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481527662] [2023-08-25 07:51:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:51:01,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:51:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:51:01,182 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 07:51:01,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:51:01,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481527662] [2023-08-25 07:51:01,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481527662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:51:01,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:51:01,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:51:01,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411138168] [2023-08-25 07:51:01,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:51:01,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:51:01,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:51:01,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:51:01,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:51:01,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 426 [2023-08-25 07:51:01,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 139 transitions, 578 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 07:51:01,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:51:01,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 426 [2023-08-25 07:51:01,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:51:05,232 INFO L124 PetriNetUnfolderBase]: 42147/73200 cut-off events. [2023-08-25 07:51:05,232 INFO L125 PetriNetUnfolderBase]: For 56918/69900 co-relation queries the response was YES. [2023-08-25 07:51:05,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168830 conditions, 73200 events. 42147/73200 cut-off events. For 56918/69900 co-relation queries the response was YES. Maximal size of possible extension queue 3881. Compared 684838 event pairs, 20667 based on Foata normal form. 110/67178 useless extension candidates. Maximal degree in co-relation 168820. Up to 49893 conditions per place. [2023-08-25 07:51:06,107 INFO L140 encePairwiseOnDemand]: 418/426 looper letters, 71 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2023-08-25 07:51:06,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 147 transitions, 747 flow [2023-08-25 07:51:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:51:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:51:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2023-08-25 07:51:06,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6463223787167449 [2023-08-25 07:51:06,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2023-08-25 07:51:06,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2023-08-25 07:51:06,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:51:06,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2023-08-25 07:51:06,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states 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 07:51:06,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states 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 07:51:06,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states 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 07:51:06,115 INFO L175 Difference]: Start difference. First operand has 118 places, 139 transitions, 578 flow. Second operand 3 states and 826 transitions. [2023-08-25 07:51:06,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 147 transitions, 747 flow [2023-08-25 07:51:06,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 147 transitions, 720 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 07:51:06,311 INFO L231 Difference]: Finished difference. Result has 113 places, 139 transitions, 571 flow [2023-08-25 07:51:06,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=113, PETRI_TRANSITIONS=139} [2023-08-25 07:51:06,311 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -6 predicate places. [2023-08-25 07:51:06,312 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 139 transitions, 571 flow [2023-08-25 07:51:06,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 07:51:06,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:51:06,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:51:06,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:51:06,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-25 07:51:06,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:51:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1845424327, now seen corresponding path program 1 times [2023-08-25 07:51:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:51:06,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894013586] [2023-08-25 07:51:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:51:06,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:51:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:51:06,385 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 07:51:06,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:51:06,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894013586] [2023-08-25 07:51:06,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894013586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:51:06,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:51:06,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:51:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86727647] [2023-08-25 07:51:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:51:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:51:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:51:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:51:06,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:51:06,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 426 [2023-08-25 07:51:06,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 139 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 07:51:06,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:51:06,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 426 [2023-08-25 07:51:06,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand