/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems-b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:14:30,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:14:30,913 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 18:14:30,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:14:30,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:14:30,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:14:30,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:14:30,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:14:30,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:14:30,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:14:30,966 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:14:30,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:14:30,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:14:30,967 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:14:30,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:14:30,967 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:14:30,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:14:30,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:14:30,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:14:30,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:14:30,969 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:14:30,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:14:30,975 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:14:30,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:14:30,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:14:30,979 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:14:30,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:14:30,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:14:30,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:14:30,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:14:30,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:14:30,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:14:30,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:14:30,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:14:30,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:14:30,981 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:14:31,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:14:31,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:14:31,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:14:31,368 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:14:31,368 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:14:31,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems-b.i [2023-08-24 18:14:32,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:14:32,873 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:14:32,874 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems-b.i [2023-08-24 18:14:32,890 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd5ed49d/e41b362792f34b8aaf071587deec30d3/FLAG168c29675 [2023-08-24 18:14:32,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd5ed49d/e41b362792f34b8aaf071587deec30d3 [2023-08-24 18:14:32,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:14:32,905 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:14:32,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:14:32,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:14:32,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:14:32,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:14:32" (1/1) ... [2023-08-24 18:14:32,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25199185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:32, skipping insertion in model container [2023-08-24 18:14:32,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:14:32" (1/1) ... [2023-08-24 18:14:32,955 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:14:33,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:14:33,422 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:14:33,448 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-24 18:14:33,450 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-24 18:14:33,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:14:33,557 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:14:33,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33 WrapperNode [2023-08-24 18:14:33,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:14:33,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:14:33,558 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:14:33,558 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:14:33,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,604 INFO L138 Inliner]: procedures = 323, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-08-24 18:14:33,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:14:33,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:14:33,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:14:33,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:14:33,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:14:33,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:14:33,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:14:33,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:14:33,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (1/1) ... [2023-08-24 18:14:33,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:14:33,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:14:33,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 18:14:33,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 18:14:33,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:14:33,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:14:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 18:14:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-08-24 18:14:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-08-24 18:14:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 18:14:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 18:14:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 18:14:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 18:14:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 18:14:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 18:14:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:14:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 18:14:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:14:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:14:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:14:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:14:33,731 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:14:33,894 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:14:33,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:14:34,166 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:14:34,175 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:14:34,175 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 18:14:34,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:14:34 BoogieIcfgContainer [2023-08-24 18:14:34,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:14:34,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:14:34,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:14:34,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:14:34,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:14:32" (1/3) ... [2023-08-24 18:14:34,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db91195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:14:34, skipping insertion in model container [2023-08-24 18:14:34,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:14:33" (2/3) ... [2023-08-24 18:14:34,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db91195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:14:34, skipping insertion in model container [2023-08-24 18:14:34,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:14:34" (3/3) ... [2023-08-24 18:14:34,187 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems-b.i [2023-08-24 18:14:34,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:14:34,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-24 18:14:34,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:14:34,393 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-08-24 18:14:34,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 308 transitions, 723 flow [2023-08-24 18:14:34,548 INFO L124 PetriNetUnfolderBase]: 8/221 cut-off events. [2023-08-24 18:14:34,548 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 18:14:34,559 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. [2023-08-24 18:14:34,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 308 transitions, 723 flow [2023-08-24 18:14:34,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 208 transitions, 467 flow [2023-08-24 18:14:34,569 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:14:34,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 208 transitions, 467 flow [2023-08-24 18:14:34,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 208 transitions, 467 flow [2023-08-24 18:14:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 208 transitions, 467 flow [2023-08-24 18:14:34,622 INFO L124 PetriNetUnfolderBase]: 6/208 cut-off events. [2023-08-24 18:14:34,622 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 18:14:34,624 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. [2023-08-24 18:14:34,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 7920 [2023-08-24 18:14:38,126 INFO L134 LiptonReduction]: Checked pairs total: 55113 [2023-08-24 18:14:38,127 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-24 18:14:38,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:14:38,143 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;@2025a8be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:14:38,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-24 18:14:38,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:14:38,146 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-24 18:14:38,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:14:38,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:14:38,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 18:14:38,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:14:38,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:14:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 697174703, now seen corresponding path program 1 times [2023-08-24 18:14:38,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:14:38,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338031087] [2023-08-24 18:14:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:14:38,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:14:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:14:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:14:38,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:14:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338031087] [2023-08-24 18:14:38,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338031087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:14:38,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:14:38,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:14:38,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768272421] [2023-08-24 18:14:38,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:14:38,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:14:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:14:38,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:14:38,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:14:38,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 426 [2023-08-24 18:14:38,364 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) [2023-08-24 18:14:38,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:14:38,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 426 [2023-08-24 18:14:38,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:14:39,627 INFO L124 PetriNetUnfolderBase]: 4535/9994 cut-off events. [2023-08-24 18:14:39,628 INFO L125 PetriNetUnfolderBase]: For 606/614 co-relation queries the response was YES. [2023-08-24 18:14:39,657 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. [2023-08-24 18:14:39,717 INFO L140 encePairwiseOnDemand]: 421/426 looper letters, 41 selfloop transitions, 0 changer transitions 0/100 dead transitions. [2023-08-24 18:14:39,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 100 transitions, 333 flow [2023-08-24 18:14:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:14:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:14:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 598 transitions. [2023-08-24 18:14:39,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7018779342723005 [2023-08-24 18:14:39,730 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 598 transitions. [2023-08-24 18:14:39,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 598 transitions. [2023-08-24 18:14:39,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:14:39,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 598 transitions. [2023-08-24 18:14:39,738 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) [2023-08-24 18:14:39,744 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) [2023-08-24 18:14:39,745 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) [2023-08-24 18:14:39,746 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 261 flow. Second operand 2 states and 598 transitions. [2023-08-24 18:14:39,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 100 transitions, 333 flow [2023-08-24 18:14:39,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 299 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-24 18:14:39,773 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 217 flow [2023-08-24 18:14:39,775 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} [2023-08-24 18:14:39,779 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -16 predicate places. [2023-08-24 18:14:39,779 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 217 flow [2023-08-24 18:14:39,780 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) [2023-08-24 18:14:39,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:14:39,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:14:39,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:14:39,780 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)] === [2023-08-24 18:14:39,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:14:39,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1830029374, now seen corresponding path program 1 times [2023-08-24 18:14:39,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:14:39,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515068040] [2023-08-24 18:14:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:14:39,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:14:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:14:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:14:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:14:40,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515068040] [2023-08-24 18:14:40,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515068040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:14:40,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:14:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:14:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275570370] [2023-08-24 18:14:40,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:14:40,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:14:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:14:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:14:40,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:14:40,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 426 [2023-08-24 18:14:40,167 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) [2023-08-24 18:14:40,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:14:40,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 426 [2023-08-24 18:14:40,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:15:11,672 INFO L124 PetriNetUnfolderBase]: 444213/564854 cut-off events. [2023-08-24 18:15:11,673 INFO L125 PetriNetUnfolderBase]: For 1090/1090 co-relation queries the response was YES. [2023-08-24 18:15:12,609 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. [2023-08-24 18:15:14,901 INFO L140 encePairwiseOnDemand]: 416/426 looper letters, 351 selfloop transitions, 21 changer transitions 0/390 dead transitions. [2023-08-24 18:15:14,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 390 transitions, 1602 flow [2023-08-24 18:15:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:15:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:15:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1525 transitions. [2023-08-24 18:15:14,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966353677621283 [2023-08-24 18:15:14,907 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1525 transitions. [2023-08-24 18:15:14,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1525 transitions. [2023-08-24 18:15:14,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:15:14,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1525 transitions. [2023-08-24 18:15:14,912 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) [2023-08-24 18:15:14,917 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) [2023-08-24 18:15:14,918 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) [2023-08-24 18:15:14,918 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 217 flow. Second operand 6 states and 1525 transitions. [2023-08-24 18:15:14,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 390 transitions, 1602 flow [2023-08-24 18:15:14,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 390 transitions, 1602 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:15:14,925 INFO L231 Difference]: Finished difference. Result has 113 places, 120 transitions, 359 flow [2023-08-24 18:15:14,925 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} [2023-08-24 18:15:14,926 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -6 predicate places. [2023-08-24 18:15:14,926 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 120 transitions, 359 flow [2023-08-24 18:15:14,927 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) [2023-08-24 18:15:14,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:15:14,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:15:14,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:15:14,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:15:14,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:15:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1230947112, now seen corresponding path program 1 times [2023-08-24 18:15:14,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:15:14,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627577452] [2023-08-24 18:15:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:15:14,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:15:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:15:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:15:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:15:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627577452] [2023-08-24 18:15:15,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627577452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:15:15,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:15:15,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:15:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623079923] [2023-08-24 18:15:15,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:15:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:15:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:15:15,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:15:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:15:15,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 426 [2023-08-24 18:15:15,167 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) [2023-08-24 18:15:15,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:15:15,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 426 [2023-08-24 18:15:15,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:15:48,962 INFO L124 PetriNetUnfolderBase]: 444194/565923 cut-off events. [2023-08-24 18:15:48,962 INFO L125 PetriNetUnfolderBase]: For 252418/252574 co-relation queries the response was YES. [2023-08-24 18:15:50,501 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. [2023-08-24 18:15:53,259 INFO L140 encePairwiseOnDemand]: 417/426 looper letters, 144 selfloop transitions, 24 changer transitions 0/186 dead transitions. [2023-08-24 18:15:53,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 186 transitions, 974 flow [2023-08-24 18:15:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:15:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:15:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1291 transitions. [2023-08-24 18:15:53,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050860719874805 [2023-08-24 18:15:53,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1291 transitions. [2023-08-24 18:15:53,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1291 transitions. [2023-08-24 18:15:53,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:15:53,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1291 transitions. [2023-08-24 18:15:53,267 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) [2023-08-24 18:15:53,271 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) [2023-08-24 18:15:53,272 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) [2023-08-24 18:15:53,273 INFO L175 Difference]: Start difference. First operand has 113 places, 120 transitions, 359 flow. Second operand 6 states and 1291 transitions. [2023-08-24 18:15:53,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 186 transitions, 974 flow [2023-08-24 18:16:23,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 186 transitions, 974 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:16:23,133 INFO L231 Difference]: Finished difference. Result has 118 places, 139 transitions, 578 flow [2023-08-24 18:16:23,133 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} [2023-08-24 18:16:23,134 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2023-08-24 18:16:23,134 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 139 transitions, 578 flow [2023-08-24 18:16:23,135 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) [2023-08-24 18:16:23,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:23,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:23,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:16:23,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:16:23,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:23,136 INFO L85 PathProgramCache]: Analyzing trace with hash 57894360, now seen corresponding path program 1 times [2023-08-24 18:16:23,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:23,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282513431] [2023-08-24 18:16:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:23,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:23,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:23,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282513431] [2023-08-24 18:16:23,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282513431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:23,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:23,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:23,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666486396] [2023-08-24 18:16:23,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:23,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:23,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:23,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:23,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:23,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 426 [2023-08-24 18:16:23,191 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) [2023-08-24 18:16:23,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:23,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 426 [2023-08-24 18:16:23,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:27,124 INFO L124 PetriNetUnfolderBase]: 42147/73200 cut-off events. [2023-08-24 18:16:27,125 INFO L125 PetriNetUnfolderBase]: For 56918/69900 co-relation queries the response was YES. [2023-08-24 18:16:27,546 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. [2023-08-24 18:16:27,892 INFO L140 encePairwiseOnDemand]: 418/426 looper letters, 71 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2023-08-24 18:16:27,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 147 transitions, 747 flow [2023-08-24 18:16:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:16:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:16:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2023-08-24 18:16:27,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6463223787167449 [2023-08-24 18:16:27,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2023-08-24 18:16:27,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2023-08-24 18:16:27,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:27,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2023-08-24 18:16:27,897 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) [2023-08-24 18:16:27,900 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) [2023-08-24 18:16:27,900 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) [2023-08-24 18:16:27,901 INFO L175 Difference]: Start difference. First operand has 118 places, 139 transitions, 578 flow. Second operand 3 states and 826 transitions. [2023-08-24 18:16:27,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 147 transitions, 747 flow [2023-08-24 18:16:28,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 147 transitions, 720 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 18:16:28,073 INFO L231 Difference]: Finished difference. Result has 113 places, 139 transitions, 571 flow [2023-08-24 18:16:28,073 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} [2023-08-24 18:16:28,074 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -6 predicate places. [2023-08-24 18:16:28,074 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 139 transitions, 571 flow [2023-08-24 18:16:28,074 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) [2023-08-24 18:16:28,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:28,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:28,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:16:28,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:16:28,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1845424327, now seen corresponding path program 1 times [2023-08-24 18:16:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:28,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714268590] [2023-08-24 18:16:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714268590] [2023-08-24 18:16:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714268590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:28,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:28,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:28,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527467613] [2023-08-24 18:16:28,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:28,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:28,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:28,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:28,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 426 [2023-08-24 18:16:28,157 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) [2023-08-24 18:16:28,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:28,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 426 [2023-08-24 18:16:28,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand