/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-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:40:15,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:40:15,183 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 21:40:15,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:40:15,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:40:15,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:40:15,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:40:15,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:40:15,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:40:15,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:40:15,207 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:40:15,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:40:15,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:40:15,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:40:15,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:40:15,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:40:15,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:40:15,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:40:15,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:40:15,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:40:15,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:40:15,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:40:15,211 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:40:15,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:40:15,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:40:15,212 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:40:15,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:40:15,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:40:15,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:40:15,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:40:15,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:40:15,214 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:40:15,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:40:15,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:40:15,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:40:15,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:40:15,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:40:15,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:40:15,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:40:15,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:40:15,563 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:40:15,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-25 21:40:16,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:40:16,992 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:40:16,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-25 21:40:17,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410d13a12/c932023412904b1bbb4f8b574d94837f/FLAG78ad426f9 [2023-08-25 21:40:17,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410d13a12/c932023412904b1bbb4f8b574d94837f [2023-08-25 21:40:17,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:40:17,026 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:40:17,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:40:17,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:40:17,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:40:17,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123f939f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17, skipping insertion in model container [2023-08-25 21:40:17,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,084 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:40:17,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:40:17,502 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:40:17,528 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [218] [2023-08-25 21:40:17,530 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [219] [2023-08-25 21:40:17,536 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [730] [2023-08-25 21:40:17,548 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [871] [2023-08-25 21:40:17,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:40:17,625 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:40:17,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17 WrapperNode [2023-08-25 21:40:17,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:40:17,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:40:17,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:40:17,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:40:17,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,701 INFO L138 Inliner]: procedures = 243, calls = 51, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-08-25 21:40:17,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:40:17,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:40:17,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:40:17,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:40:17,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:40:17,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:40:17,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:40:17,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:40:17,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (1/1) ... [2023-08-25 21:40:17,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:40:17,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:40:17,758 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 21:40:17,772 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 21:40:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:40:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:40:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-25 21:40:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:40:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:40:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:40:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:40:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:40:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:40:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 21:40:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:40:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:40:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:40:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:40:17,796 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 21:40:17,970 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:40:17,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:40:18,261 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:40:18,270 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:40:18,270 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-25 21:40:18,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:40:18 BoogieIcfgContainer [2023-08-25 21:40:18,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:40:18,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:40:18,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:40:18,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:40:18,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:40:17" (1/3) ... [2023-08-25 21:40:18,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273088d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:40:18, skipping insertion in model container [2023-08-25 21:40:18,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:40:17" (2/3) ... [2023-08-25 21:40:18,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273088d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:40:18, skipping insertion in model container [2023-08-25 21:40:18,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:40:18" (3/3) ... [2023-08-25 21:40:18,279 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-08-25 21:40:18,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:40:18,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-25 21:40:18,292 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:40:18,361 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:40:18,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 206 transitions, 428 flow [2023-08-25 21:40:18,481 INFO L124 PetriNetUnfolderBase]: 11/204 cut-off events. [2023-08-25 21:40:18,481 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:40:18,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 204 events. 11/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 359 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-08-25 21:40:18,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 206 transitions, 428 flow [2023-08-25 21:40:18,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 191 transitions, 394 flow [2023-08-25 21:40:18,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:40:18,505 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 191 transitions, 394 flow [2023-08-25 21:40:18,507 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 191 transitions, 394 flow [2023-08-25 21:40:18,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 191 transitions, 394 flow [2023-08-25 21:40:18,548 INFO L124 PetriNetUnfolderBase]: 8/191 cut-off events. [2023-08-25 21:40:18,549 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:40:18,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 8/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 335 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-25 21:40:18,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 7052 [2023-08-25 21:40:24,102 INFO L134 LiptonReduction]: Checked pairs total: 19909 [2023-08-25 21:40:24,102 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-25 21:40:24,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:40:24,119 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;@a4c65e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:40:24,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-25 21:40:24,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:40:24,121 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:40:24,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:40:24,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:24,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:40:24,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:24,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash 744, now seen corresponding path program 1 times [2023-08-25 21:40:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:24,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694270906] [2023-08-25 21:40:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:24,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:24,233 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 21:40:24,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694270906] [2023-08-25 21:40:24,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694270906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:24,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:40:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761114023] [2023-08-25 21:40:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:24,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:40:24,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:40:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:40:24,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 364 [2023-08-25 21:40:24,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 195.5) internal successors, (391), 2 states have internal predecessors, (391), 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 21:40:24,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:24,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 364 [2023-08-25 21:40:24,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:24,413 INFO L124 PetriNetUnfolderBase]: 205/510 cut-off events. [2023-08-25 21:40:24,414 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-25 21:40:24,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 510 events. 205/510 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2576 event pairs, 141 based on Foata normal form. 32/453 useless extension candidates. Maximal degree in co-relation 768. Up to 333 conditions per place. [2023-08-25 21:40:24,422 INFO L140 encePairwiseOnDemand]: 352/364 looper letters, 25 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-25 21:40:24,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 158 flow [2023-08-25 21:40:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:40:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:40:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2023-08-25 21:40:24,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2023-08-25 21:40:24,442 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2023-08-25 21:40:24,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2023-08-25 21:40:24,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:24,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2023-08-25 21:40:24,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 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 21:40:24,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 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 21:40:24,457 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 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 21:40:24,459 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 132 flow. Second operand 2 states and 427 transitions. [2023-08-25 21:40:24,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 158 flow [2023-08-25 21:40:24,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:40:24,464 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 100 flow [2023-08-25 21:40:24,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-08-25 21:40:24,468 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -13 predicate places. [2023-08-25 21:40:24,469 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 100 flow [2023-08-25 21:40:24,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 195.5) internal successors, (391), 2 states have internal predecessors, (391), 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 21:40:24,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:24,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 21:40:24,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:40:24,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:24,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:24,471 INFO L85 PathProgramCache]: Analyzing trace with hash 385503927, now seen corresponding path program 1 times [2023-08-25 21:40:24,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:24,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761452033] [2023-08-25 21:40:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:24,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:40:24,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:24,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761452033] [2023-08-25 21:40:24,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761452033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:24,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:24,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:40:24,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214298404] [2023-08-25 21:40:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:24,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:40:24,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:24,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:40:24,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:40:24,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 364 [2023-08-25 21:40:24,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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 21:40:24,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:24,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 364 [2023-08-25 21:40:24,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:24,879 INFO L124 PetriNetUnfolderBase]: 962/1805 cut-off events. [2023-08-25 21:40:24,879 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-25 21:40:24,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 1805 events. 962/1805 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9335 event pairs, 326 based on Foata normal form. 0/1553 useless extension candidates. Maximal degree in co-relation 3424. Up to 870 conditions per place. [2023-08-25 21:40:24,889 INFO L140 encePairwiseOnDemand]: 350/364 looper letters, 62 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-08-25 21:40:24,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 80 transitions, 310 flow [2023-08-25 21:40:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:40:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:40:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-25 21:40:24,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2023-08-25 21:40:24,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-25 21:40:24,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-25 21:40:24,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:24,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-25 21:40:24,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 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 21:40:24,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:24,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:24,900 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 100 flow. Second operand 3 states and 598 transitions. [2023-08-25 21:40:24,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 80 transitions, 310 flow [2023-08-25 21:40:24,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 80 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:40:24,903 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 188 flow [2023-08-25 21:40:24,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2023-08-25 21:40:24,904 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-25 21:40:24,905 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 188 flow [2023-08-25 21:40:24,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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 21:40:24,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:24,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:24,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:40:24,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:24,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash -393775609, now seen corresponding path program 1 times [2023-08-25 21:40:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:24,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337600797] [2023-08-25 21:40:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:24,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:25,012 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 21:40:25,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:25,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337600797] [2023-08-25 21:40:25,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337600797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:25,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:25,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:40:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996665477] [2023-08-25 21:40:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:25,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:40:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:40:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:40:25,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 364 [2023-08-25 21:40:25,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 21:40:25,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:25,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 364 [2023-08-25 21:40:25,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:25,260 INFO L124 PetriNetUnfolderBase]: 888/1905 cut-off events. [2023-08-25 21:40:25,261 INFO L125 PetriNetUnfolderBase]: For 174/178 co-relation queries the response was YES. [2023-08-25 21:40:25,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 1905 events. 888/1905 cut-off events. For 174/178 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10785 event pairs, 322 based on Foata normal form. 0/1672 useless extension candidates. Maximal degree in co-relation 3903. Up to 971 conditions per place. [2023-08-25 21:40:25,271 INFO L140 encePairwiseOnDemand]: 359/364 looper letters, 48 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-25 21:40:25,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 333 flow [2023-08-25 21:40:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:40:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:40:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-25 21:40:25,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558608058608059 [2023-08-25 21:40:25,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-25 21:40:25,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-25 21:40:25,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:25,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-25 21:40:25,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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 21:40:25,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:25,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:25,278 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 188 flow. Second operand 3 states and 607 transitions. [2023-08-25 21:40:25,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 333 flow [2023-08-25 21:40:25,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:40:25,282 INFO L231 Difference]: Finished difference. Result has 54 places, 60 transitions, 192 flow [2023-08-25 21:40:25,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=54, PETRI_TRANSITIONS=60} [2023-08-25 21:40:25,283 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-08-25 21:40:25,283 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 60 transitions, 192 flow [2023-08-25 21:40:25,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 21:40:25,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:25,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:25,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:40:25,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:25,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1026766716, now seen corresponding path program 1 times [2023-08-25 21:40:25,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:25,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206456326] [2023-08-25 21:40:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:25,344 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 21:40:25,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:25,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206456326] [2023-08-25 21:40:25,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206456326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:25,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:25,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:40:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027395954] [2023-08-25 21:40:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:25,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:40:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:40:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:40:25,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 364 [2023-08-25 21:40:25,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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 21:40:25,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:25,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 364 [2023-08-25 21:40:25,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:25,537 INFO L124 PetriNetUnfolderBase]: 752/1867 cut-off events. [2023-08-25 21:40:25,538 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-08-25 21:40:25,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1867 events. 752/1867 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 12253 event pairs, 303 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 3708. Up to 783 conditions per place. [2023-08-25 21:40:25,550 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 42 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-25 21:40:25,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 325 flow [2023-08-25 21:40:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:40:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:40:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-25 21:40:25,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-08-25 21:40:25,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-25 21:40:25,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-25 21:40:25,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:25,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-25 21:40:25,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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 21:40:25,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:25,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:25,558 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 192 flow. Second operand 3 states and 609 transitions. [2023-08-25 21:40:25,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 325 flow [2023-08-25 21:40:25,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:40:25,562 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 198 flow [2023-08-25 21:40:25,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2023-08-25 21:40:25,563 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2023-08-25 21:40:25,564 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 198 flow [2023-08-25 21:40:25,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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 21:40:25,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:25,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:25,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 21:40:25,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:25,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash -91251144, now seen corresponding path program 1 times [2023-08-25 21:40:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:25,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201678341] [2023-08-25 21:40:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:25,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:25,596 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 21:40:25,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:25,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201678341] [2023-08-25 21:40:25,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201678341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:25,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:25,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:40:25,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256078469] [2023-08-25 21:40:25,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:25,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:40:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:25,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:40:25,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:40:25,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 364 [2023-08-25 21:40:25,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 21:40:25,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:25,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 364 [2023-08-25 21:40:25,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:25,893 INFO L124 PetriNetUnfolderBase]: 1683/3125 cut-off events. [2023-08-25 21:40:25,894 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2023-08-25 21:40:25,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 3125 events. 1683/3125 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17460 event pairs, 901 based on Foata normal form. 0/2850 useless extension candidates. Maximal degree in co-relation 7438. Up to 2265 conditions per place. [2023-08-25 21:40:25,915 INFO L140 encePairwiseOnDemand]: 357/364 looper letters, 68 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-08-25 21:40:25,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 442 flow [2023-08-25 21:40:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:40:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:40:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-25 21:40:25,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293040293040293 [2023-08-25 21:40:25,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-25 21:40:25,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-25 21:40:25,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:25,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-25 21:40:25,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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 21:40:25,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:25,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:25,922 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 198 flow. Second operand 3 states and 578 transitions. [2023-08-25 21:40:25,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 442 flow [2023-08-25 21:40:25,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:40:25,925 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 294 flow [2023-08-25 21:40:25,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=58, PETRI_TRANSITIONS=70} [2023-08-25 21:40:25,926 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-08-25 21:40:25,926 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 294 flow [2023-08-25 21:40:25,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 21:40:25,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:25,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:25,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 21:40:25,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:25,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:25,927 INFO L85 PathProgramCache]: Analyzing trace with hash -477415254, now seen corresponding path program 1 times [2023-08-25 21:40:25,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:25,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097794783] [2023-08-25 21:40:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:25,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:26,037 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 21:40:26,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:26,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097794783] [2023-08-25 21:40:26,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097794783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:26,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:26,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:40:26,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592863501] [2023-08-25 21:40:26,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:26,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:40:26,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:26,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:40:26,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:40:26,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 364 [2023-08-25 21:40:26,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 21:40:26,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:26,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 364 [2023-08-25 21:40:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:26,162 INFO L124 PetriNetUnfolderBase]: 236/693 cut-off events. [2023-08-25 21:40:26,162 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-08-25 21:40:26,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 693 events. 236/693 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3639 event pairs, 58 based on Foata normal form. 46/725 useless extension candidates. Maximal degree in co-relation 1570. Up to 268 conditions per place. [2023-08-25 21:40:26,166 INFO L140 encePairwiseOnDemand]: 356/364 looper letters, 29 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2023-08-25 21:40:26,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 268 flow [2023-08-25 21:40:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:40:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:40:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2023-08-25 21:40:26,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228937728937729 [2023-08-25 21:40:26,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2023-08-25 21:40:26,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2023-08-25 21:40:26,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:26,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2023-08-25 21:40:26,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 21:40:26,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:26,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:26,174 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 294 flow. Second operand 3 states and 571 transitions. [2023-08-25 21:40:26,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 268 flow [2023-08-25 21:40:26,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 234 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-25 21:40:26,177 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 152 flow [2023-08-25 21:40:26,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-25 21:40:26,178 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2023-08-25 21:40:26,178 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 152 flow [2023-08-25 21:40:26,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 21:40:26,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:26,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:26,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 21:40:26,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:26,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:26,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1608743899, now seen corresponding path program 1 times [2023-08-25 21:40:26,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:26,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432110983] [2023-08-25 21:40:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:26,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:26,218 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 21:40:26,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:26,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432110983] [2023-08-25 21:40:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432110983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:26,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:26,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:40:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949492945] [2023-08-25 21:40:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:26,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:40:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:40:26,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:40:26,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 364 [2023-08-25 21:40:26,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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 21:40:26,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:26,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 364 [2023-08-25 21:40:26,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:26,319 INFO L124 PetriNetUnfolderBase]: 211/585 cut-off events. [2023-08-25 21:40:26,320 INFO L125 PetriNetUnfolderBase]: For 116/120 co-relation queries the response was YES. [2023-08-25 21:40:26,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 585 events. 211/585 cut-off events. For 116/120 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2891 event pairs, 152 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 1258. Up to 357 conditions per place. [2023-08-25 21:40:26,323 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 28 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-25 21:40:26,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 223 flow [2023-08-25 21:40:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:40:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:40:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-25 21:40:26,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137362637362637 [2023-08-25 21:40:26,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-25 21:40:26,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-25 21:40:26,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:26,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-25 21:40:26,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 21:40:26,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:26,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:26,329 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 152 flow. Second operand 3 states and 561 transitions. [2023-08-25 21:40:26,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 223 flow [2023-08-25 21:40:26,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:40:26,331 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 147 flow [2023-08-25 21:40:26,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-25 21:40:26,332 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2023-08-25 21:40:26,332 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 147 flow [2023-08-25 21:40:26,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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 21:40:26,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:26,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:26,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 21:40:26,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:26,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash 811848566, now seen corresponding path program 1 times [2023-08-25 21:40:26,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512566815] [2023-08-25 21:40:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:40:26,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512566815] [2023-08-25 21:40:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512566815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:26,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:26,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:40:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989766624] [2023-08-25 21:40:26,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:40:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:40:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:40:26,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 364 [2023-08-25 21:40:26,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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 21:40:26,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:26,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 364 [2023-08-25 21:40:26,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:26,494 INFO L124 PetriNetUnfolderBase]: 283/857 cut-off events. [2023-08-25 21:40:26,494 INFO L125 PetriNetUnfolderBase]: For 174/178 co-relation queries the response was YES. [2023-08-25 21:40:26,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 857 events. 283/857 cut-off events. For 174/178 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4286 event pairs, 112 based on Foata normal form. 26/876 useless extension candidates. Maximal degree in co-relation 1731. Up to 290 conditions per place. [2023-08-25 21:40:26,498 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-25 21:40:26,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 303 flow [2023-08-25 21:40:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:40:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:40:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-25 21:40:26,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2023-08-25 21:40:26,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-25 21:40:26,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-25 21:40:26,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:26,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-25 21:40:26,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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 21:40:26,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:26,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:26,504 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 147 flow. Second operand 3 states and 604 transitions. [2023-08-25 21:40:26,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 303 flow [2023-08-25 21:40:26,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:40:26,506 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 154 flow [2023-08-25 21:40:26,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-08-25 21:40:26,507 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-25 21:40:26,507 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 154 flow [2023-08-25 21:40:26,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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 21:40:26,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:26,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 21:40:26,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:26,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -964841638, now seen corresponding path program 1 times [2023-08-25 21:40:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554604109] [2023-08-25 21:40:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:26,542 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 21:40:26,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:26,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554604109] [2023-08-25 21:40:26,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554604109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:26,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:26,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:40:26,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841765673] [2023-08-25 21:40:26,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:26,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:40:26,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:26,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:40:26,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:40:26,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 364 [2023-08-25 21:40:26,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 21:40:26,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:26,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 364 [2023-08-25 21:40:26,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:26,671 INFO L124 PetriNetUnfolderBase]: 478/1077 cut-off events. [2023-08-25 21:40:26,672 INFO L125 PetriNetUnfolderBase]: For 320/324 co-relation queries the response was YES. [2023-08-25 21:40:26,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1077 events. 478/1077 cut-off events. For 320/324 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4728 event pairs, 372 based on Foata normal form. 0/1073 useless extension candidates. Maximal degree in co-relation 2505. Up to 886 conditions per place. [2023-08-25 21:40:26,677 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 40 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-25 21:40:26,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 249 flow [2023-08-25 21:40:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:40:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:40:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-25 21:40:26,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082417582417582 [2023-08-25 21:40:26,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-25 21:40:26,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-25 21:40:26,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:26,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-25 21:40:26,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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 21:40:26,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:26,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:40:26,683 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 154 flow. Second operand 3 states and 555 transitions. [2023-08-25 21:40:26,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 249 flow [2023-08-25 21:40:26,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:40:26,685 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 156 flow [2023-08-25 21:40:26,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-25 21:40:26,686 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-25 21:40:26,686 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 156 flow [2023-08-25 21:40:26,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 21:40:26,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:26,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:26,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 21:40:26,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:26,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1107163605, now seen corresponding path program 1 times [2023-08-25 21:40:26,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608025248] [2023-08-25 21:40:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:26,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:40:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608025248] [2023-08-25 21:40:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608025248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:40:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796258654] [2023-08-25 21:40:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:26,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:40:26,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:40:26,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:40:26,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 21:40:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:26,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 21:40:26,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:40:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:40:26,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:40:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:40:27,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796258654] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:40:27,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:40:27,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-25 21:40:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738764021] [2023-08-25 21:40:27,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:40:27,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 21:40:27,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:27,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 21:40:27,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 21:40:27,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 364 [2023-08-25 21:40:27,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 194.85714285714286) internal successors, (1364), 7 states have internal predecessors, (1364), 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 21:40:27,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:27,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 364 [2023-08-25 21:40:27,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:27,283 INFO L124 PetriNetUnfolderBase]: 588/1905 cut-off events. [2023-08-25 21:40:27,283 INFO L125 PetriNetUnfolderBase]: For 450/458 co-relation queries the response was YES. [2023-08-25 21:40:27,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 1905 events. 588/1905 cut-off events. For 450/458 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11128 event pairs, 115 based on Foata normal form. 114/2009 useless extension candidates. Maximal degree in co-relation 3882. Up to 261 conditions per place. [2023-08-25 21:40:27,292 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 83 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2023-08-25 21:40:27,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 540 flow [2023-08-25 21:40:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:40:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:40:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1219 transitions. [2023-08-25 21:40:27,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581501831501832 [2023-08-25 21:40:27,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1219 transitions. [2023-08-25 21:40:27,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1219 transitions. [2023-08-25 21:40:27,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:27,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1219 transitions. [2023-08-25 21:40:27,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.16666666666666) internal successors, (1219), 6 states have internal predecessors, (1219), 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 21:40:27,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 21:40:27,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 21:40:27,302 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 156 flow. Second operand 6 states and 1219 transitions. [2023-08-25 21:40:27,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 540 flow [2023-08-25 21:40:27,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 108 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:40:27,305 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 193 flow [2023-08-25 21:40:27,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-25 21:40:27,305 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2023-08-25 21:40:27,306 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 193 flow [2023-08-25 21:40:27,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 194.85714285714286) internal successors, (1364), 7 states have internal predecessors, (1364), 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 21:40:27,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:27,306 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:27,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 21:40:27,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-25 21:40:27,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:27,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:27,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1794823815, now seen corresponding path program 2 times [2023-08-25 21:40:27,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:27,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043756387] [2023-08-25 21:40:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:27,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-25 21:40:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043756387] [2023-08-25 21:40:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043756387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:40:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714022119] [2023-08-25 21:40:27,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:40:27,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:40:27,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:40:27,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:40:27,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 21:40:27,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:40:27,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:40:27,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 21:40:27,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:40:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-25 21:40:27,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:40:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-25 21:40:27,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714022119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:40:27,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:40:27,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-25 21:40:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752716691] [2023-08-25 21:40:27,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:40:27,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 21:40:27,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:27,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 21:40:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 21:40:27,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 364 [2023-08-25 21:40:27,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 193.28571428571428) internal successors, (1353), 7 states have internal predecessors, (1353), 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 21:40:27,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:27,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 364 [2023-08-25 21:40:27,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:28,270 INFO L124 PetriNetUnfolderBase]: 1018/3316 cut-off events. [2023-08-25 21:40:28,270 INFO L125 PetriNetUnfolderBase]: For 1612/1624 co-relation queries the response was YES. [2023-08-25 21:40:28,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7155 conditions, 3316 events. 1018/3316 cut-off events. For 1612/1624 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 21579 event pairs, 147 based on Foata normal form. 132/3433 useless extension candidates. Maximal degree in co-relation 7143. Up to 423 conditions per place. [2023-08-25 21:40:28,289 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 100 selfloop transitions, 6 changer transitions 0/125 dead transitions. [2023-08-25 21:40:28,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 125 transitions, 757 flow [2023-08-25 21:40:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:40:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:40:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1209 transitions. [2023-08-25 21:40:28,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2023-08-25 21:40:28,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1209 transitions. [2023-08-25 21:40:28,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1209 transitions. [2023-08-25 21:40:28,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:28,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1209 transitions. [2023-08-25 21:40:28,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.5) internal successors, (1209), 6 states have internal predecessors, (1209), 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 21:40:28,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 21:40:28,299 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 21:40:28,299 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 193 flow. Second operand 6 states and 1209 transitions. [2023-08-25 21:40:28,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 125 transitions, 757 flow [2023-08-25 21:40:28,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 125 transitions, 723 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-25 21:40:28,304 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 228 flow [2023-08-25 21:40:28,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2023-08-25 21:40:28,304 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-08-25 21:40:28,304 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 228 flow [2023-08-25 21:40:28,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.28571428571428) internal successors, (1353), 7 states have internal predecessors, (1353), 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 21:40:28,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:28,305 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:28,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 21:40:28,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-25 21:40:28,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:28,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash 727639346, now seen corresponding path program 3 times [2023-08-25 21:40:28,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:28,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420874494] [2023-08-25 21:40:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:28,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-08-25 21:40:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:28,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420874494] [2023-08-25 21:40:28,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420874494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:40:28,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:40:28,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 21:40:28,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836776541] [2023-08-25 21:40:28,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:40:28,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 21:40:28,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 21:40:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 21:40:28,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 364 [2023-08-25 21:40:28,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 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 21:40:28,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:28,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 364 [2023-08-25 21:40:28,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:29,111 INFO L124 PetriNetUnfolderBase]: 1052/2955 cut-off events. [2023-08-25 21:40:29,111 INFO L125 PetriNetUnfolderBase]: For 2319/2319 co-relation queries the response was YES. [2023-08-25 21:40:29,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 2955 events. 1052/2955 cut-off events. For 2319/2319 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 17771 event pairs, 293 based on Foata normal form. 50/2838 useless extension candidates. Maximal degree in co-relation 7235. Up to 1048 conditions per place. [2023-08-25 21:40:29,127 INFO L140 encePairwiseOnDemand]: 356/364 looper letters, 70 selfloop transitions, 7 changer transitions 4/94 dead transitions. [2023-08-25 21:40:29,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 565 flow [2023-08-25 21:40:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:40:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:40:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1174 transitions. [2023-08-25 21:40:29,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375457875457875 [2023-08-25 21:40:29,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1174 transitions. [2023-08-25 21:40:29,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1174 transitions. [2023-08-25 21:40:29,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:29,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1174 transitions. [2023-08-25 21:40:29,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 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 21:40:29,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 21:40:29,136 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 21:40:29,137 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 228 flow. Second operand 6 states and 1174 transitions. [2023-08-25 21:40:29,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 565 flow [2023-08-25 21:40:29,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 554 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-25 21:40:29,142 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 266 flow [2023-08-25 21:40:29,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2023-08-25 21:40:29,142 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2023-08-25 21:40:29,142 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 266 flow [2023-08-25 21:40:29,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 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 21:40:29,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:29,143 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 21:40:29,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:29,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 535922410, now seen corresponding path program 4 times [2023-08-25 21:40:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195675841] [2023-08-25 21:40:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-25 21:40:29,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:29,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195675841] [2023-08-25 21:40:29,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195675841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:40:29,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526384531] [2023-08-25 21:40:29,379 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:40:29,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:40:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:40:29,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:40:29,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 21:40:29,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:40:29,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:40:29,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:40:29,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:40:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-25 21:40:29,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:40:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-25 21:40:29,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526384531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:40:29,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:40:29,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 6 [2023-08-25 21:40:29,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758465544] [2023-08-25 21:40:29,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:40:29,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 21:40:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 21:40:29,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 21:40:29,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 364 [2023-08-25 21:40:29,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 189.85714285714286) internal successors, (1329), 7 states have internal predecessors, (1329), 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 21:40:29,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:29,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 364 [2023-08-25 21:40:29,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:30,147 INFO L124 PetriNetUnfolderBase]: 440/1331 cut-off events. [2023-08-25 21:40:30,147 INFO L125 PetriNetUnfolderBase]: For 1479/1479 co-relation queries the response was YES. [2023-08-25 21:40:30,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3492 conditions, 1331 events. 440/1331 cut-off events. For 1479/1479 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5297 event pairs, 122 based on Foata normal form. 46/1367 useless extension candidates. Maximal degree in co-relation 3472. Up to 412 conditions per place. [2023-08-25 21:40:30,153 INFO L140 encePairwiseOnDemand]: 353/364 looper letters, 67 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-08-25 21:40:30,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 575 flow [2023-08-25 21:40:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:40:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:40:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1530 transitions. [2023-08-25 21:40:30,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254120879120879 [2023-08-25 21:40:30,157 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1530 transitions. [2023-08-25 21:40:30,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1530 transitions. [2023-08-25 21:40:30,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:30,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1530 transitions. [2023-08-25 21:40:30,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 191.25) internal successors, (1530), 8 states have internal predecessors, (1530), 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 21:40:30,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 364.0) internal successors, (3276), 9 states have internal predecessors, (3276), 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 21:40:30,165 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 364.0) internal successors, (3276), 9 states have internal predecessors, (3276), 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 21:40:30,165 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 266 flow. Second operand 8 states and 1530 transitions. [2023-08-25 21:40:30,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 575 flow [2023-08-25 21:40:30,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 575 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:40:30,169 INFO L231 Difference]: Finished difference. Result has 84 places, 57 transitions, 303 flow [2023-08-25 21:40:30,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=303, PETRI_PLACES=84, PETRI_TRANSITIONS=57} [2023-08-25 21:40:30,170 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2023-08-25 21:40:30,170 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 57 transitions, 303 flow [2023-08-25 21:40:30,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.85714285714286) internal successors, (1329), 7 states have internal predecessors, (1329), 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 21:40:30,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:40:30,171 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:30,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 21:40:30,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:40:30,377 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 21:40:30,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:40:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash 232087102, now seen corresponding path program 5 times [2023-08-25 21:40:30,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:40:30,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858117886] [2023-08-25 21:40:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:40:30,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:40:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:40:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:40:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:40:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858117886] [2023-08-25 21:40:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858117886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:40:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864478880] [2023-08-25 21:40:31,071 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:40:31,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:40:31,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:40:31,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:40:31,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 21:40:31,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 21:40:31,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:40:31,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-25 21:40:31,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:40:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:40:31,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:40:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:40:32,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864478880] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:40:32,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:40:32,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-08-25 21:40:32,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276238452] [2023-08-25 21:40:32,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:40:32,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-25 21:40:32,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:40:32,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-25 21:40:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2023-08-25 21:40:32,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 364 [2023-08-25 21:40:32,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 57 transitions, 303 flow. Second operand has 31 states, 31 states have (on average 187.61290322580646) internal successors, (5816), 31 states have internal predecessors, (5816), 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 21:40:32,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:40:32,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 364 [2023-08-25 21:40:32,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:32,955 INFO L124 PetriNetUnfolderBase]: 318/1126 cut-off events. [2023-08-25 21:40:32,955 INFO L125 PetriNetUnfolderBase]: For 1363/1373 co-relation queries the response was YES. [2023-08-25 21:40:32,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 1126 events. 318/1126 cut-off events. For 1363/1373 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4495 event pairs, 37 based on Foata normal form. 26/1145 useless extension candidates. Maximal degree in co-relation 3050. Up to 159 conditions per place. [2023-08-25 21:40:32,961 INFO L140 encePairwiseOnDemand]: 357/364 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2023-08-25 21:40:32,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 867 flow [2023-08-25 21:40:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 21:40:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 21:40:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2292 transitions. [2023-08-25 21:40:32,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247252747252747 [2023-08-25 21:40:32,968 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2292 transitions. [2023-08-25 21:40:32,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2292 transitions. [2023-08-25 21:40:32,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:32,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2292 transitions. [2023-08-25 21:40:32,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 191.0) internal successors, (2292), 12 states have internal predecessors, (2292), 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 21:40:32,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 364.0) internal successors, (4732), 13 states have internal predecessors, (4732), 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 21:40:32,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 364.0) internal successors, (4732), 13 states have internal predecessors, (4732), 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 21:40:32,982 INFO L175 Difference]: Start difference. First operand has 84 places, 57 transitions, 303 flow. Second operand 12 states and 2292 transitions. [2023-08-25 21:40:32,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 867 flow [2023-08-25 21:40:32,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 125 transitions, 795 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-25 21:40:32,988 INFO L231 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2023-08-25 21:40:32,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2023-08-25 21:40:32,988 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 25 predicate places. [2023-08-25 21:40:32,988 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2023-08-25 21:40:32,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 187.61290322580646) internal successors, (5816), 31 states have internal predecessors, (5816), 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 21:40:32,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (30 of 31 remaining) [2023-08-25 21:40:32,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-08-25 21:40:32,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-08-25 21:40:32,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-08-25 21:40:32,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-08-25 21:40:32,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-08-25 21:40:32,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-08-25 21:40:32,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-08-25 21:40:32,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-08-25 21:40:32,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-08-25 21:40:32,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-08-25 21:40:32,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-08-25 21:40:32,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-08-25 21:40:32,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-08-25 21:40:32,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-08-25 21:40:32,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-08-25 21:40:32,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-08-25 21:40:32,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (13 of 31 remaining) [2023-08-25 21:40:32,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 31 remaining) [2023-08-25 21:40:32,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 31 remaining) [2023-08-25 21:40:32,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-08-25 21:40:32,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-08-25 21:40:32,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-08-25 21:40:32,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-08-25 21:40:32,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-08-25 21:40:32,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-08-25 21:40:32,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-08-25 21:40:32,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-08-25 21:40:32,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-08-25 21:40:32,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-08-25 21:40:32,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-08-25 21:40:33,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 21:40:33,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:40:33,202 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:40:33,207 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 21:40:33,207 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 21:40:33,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 09:40:33 BasicIcfg [2023-08-25 21:40:33,210 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 21:40:33,210 INFO L158 Benchmark]: Toolchain (without parser) took 16183.93ms. Allocated memory was 375.4MB in the beginning and 660.6MB in the end (delta: 285.2MB). Free memory was 350.3MB in the beginning and 518.5MB in the end (delta: -168.3MB). Peak memory consumption was 324.3MB. Max. memory is 16.0GB. [2023-08-25 21:40:33,210 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 375.4MB. Free memory is still 352.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:40:33,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 600.25ms. Allocated memory is still 375.4MB. Free memory was 350.3MB in the beginning and 323.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 21:40:33,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.25ms. Allocated memory is still 375.4MB. Free memory was 323.0MB in the beginning and 320.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:40:33,211 INFO L158 Benchmark]: Boogie Preprocessor took 29.60ms. Allocated memory is still 375.4MB. Free memory was 320.6MB in the beginning and 318.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:40:33,212 INFO L158 Benchmark]: RCFGBuilder took 539.82ms. Allocated memory is still 375.4MB. Free memory was 318.1MB in the beginning and 297.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-25 21:40:33,212 INFO L158 Benchmark]: TraceAbstraction took 14936.13ms. Allocated memory was 375.4MB in the beginning and 660.6MB in the end (delta: 285.2MB). Free memory was 296.5MB in the beginning and 518.5MB in the end (delta: -222.1MB). Peak memory consumption was 271.9MB. Max. memory is 16.0GB. [2023-08-25 21:40:33,213 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 375.4MB. Free memory is still 352.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 600.25ms. Allocated memory is still 375.4MB. Free memory was 350.3MB in the beginning and 323.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 73.25ms. Allocated memory is still 375.4MB. Free memory was 323.0MB in the beginning and 320.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.60ms. Allocated memory is still 375.4MB. Free memory was 320.6MB in the beginning and 318.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 539.82ms. Allocated memory is still 375.4MB. Free memory was 318.1MB in the beginning and 297.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 14936.13ms. Allocated memory was 375.4MB in the beginning and 660.6MB in the end (delta: 285.2MB). Free memory was 296.5MB in the beginning and 518.5MB in the end (delta: -222.1MB). Peak memory consumption was 271.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 218]: Unsoundness Warning unspecified type, defaulting to int C: short [218] - GenericResultAtLocation [Line: 219]: Unsoundness Warning unspecified type, defaulting to int C: short [219] - GenericResultAtLocation [Line: 730]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [730] - GenericResultAtLocation [Line: 871]: Unsoundness Warning unspecified type, defaulting to int C: unsigned long [871] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 190 PlacesBefore, 61 PlacesAfterwards, 191 TransitionsBefore, 60 TransitionsAfterwards, 7052 CoEnabledTransitionPairs, 7 FixpointIterations, 78 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 158 TotalNumberOfCompositions, 19909 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9251, independent: 8829, independent conditional: 0, independent unconditional: 8829, dependent: 422, dependent conditional: 0, dependent unconditional: 422, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3606, independent: 3551, independent conditional: 0, independent unconditional: 3551, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9251, independent: 5278, independent conditional: 0, independent unconditional: 5278, dependent: 367, dependent conditional: 0, dependent unconditional: 367, unknown: 3606, unknown conditional: 0, unknown unconditional: 3606] , Statistics on independence cache: Total cache size (in pairs): 390, Positive cache size: 361, Positive conditional cache size: 0, Positive unconditional cache size: 361, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 880]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 882]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 882]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 902]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 894]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 896]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 902]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 896]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 903]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 897]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 897]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 908]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 909]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 915]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 916]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 917]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 918]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 284 locations, 31 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.8s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 446 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 446 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2664 IncrementalHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 39 mSDtfsCounter, 2664 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 657 GetRequests, 593 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=13, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 845 NumberOfCodeBlocks, 845 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1128 ConstructedInterpolants, 0 QuantifiedInterpolants, 4846 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1730 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 766/1200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 21:40:33,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...