/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 11:14:04,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 11:14:04,928 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 [2023-08-26 11:14:04,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 11:14:04,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 11:14:04,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 11:14:04,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 11:14:04,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 11:14:04,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 11:14:04,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 11:14:04,973 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 11:14:04,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 11:14:04,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 11:14:04,975 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 11:14:04,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 11:14:04,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 11:14:04,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 11:14:04,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 11:14:04,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 11:14:04,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 11:14:04,976 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 11:14:04,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 11:14:04,977 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 11:14:04,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 11:14:04,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 11:14:04,978 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 11:14:04,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 11:14:04,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 11:14:04,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 11:14:04,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 11:14:04,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 11:14:04,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 11:14:04,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 11:14:04,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 11:14:04,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 11:14:04,981 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 11:14:05,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 11:14:05,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 11:14:05,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 11:14:05,313 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 11:14:05,313 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 11:14:05,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-26 11:14:06,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 11:14:06,849 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 11:14:06,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-26 11:14:06,865 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cff954a/12082191e20b4f5d906e4819f9a20dce/FLAG45ac9e6c3 [2023-08-26 11:14:06,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cff954a/12082191e20b4f5d906e4819f9a20dce [2023-08-26 11:14:06,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 11:14:06,886 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 11:14:06,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 11:14:06,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 11:14:06,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 11:14:06,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:14:06" (1/1) ... [2023-08-26 11:14:06,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b6b359e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:06, skipping insertion in model container [2023-08-26 11:14:06,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:14:06" (1/1) ... [2023-08-26 11:14:06,948 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 11:14:07,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 11:14:07,373 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 11:14:07,394 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [218] [2023-08-26 11:14:07,401 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [219] [2023-08-26 11:14:07,412 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [730] [2023-08-26 11:14:07,415 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [871] [2023-08-26 11:14:07,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 11:14:07,477 INFO L206 MainTranslator]: Completed translation [2023-08-26 11:14:07,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07 WrapperNode [2023-08-26 11:14:07,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 11:14:07,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 11:14:07,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 11:14:07,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 11:14:07,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,539 INFO L138 Inliner]: procedures = 243, calls = 51, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-08-26 11:14:07,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 11:14:07,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 11:14:07,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 11:14:07,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 11:14:07,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,574 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 11:14:07,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 11:14:07,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 11:14:07,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 11:14:07,585 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (1/1) ... [2023-08-26 11:14:07,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 11:14:07,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:14:07,639 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) [2023-08-26 11:14:07,645 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 [2023-08-26 11:14:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 11:14:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 11:14:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-26 11:14:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 11:14:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 11:14:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 11:14:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 11:14:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 11:14:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 11:14:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 11:14:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 11:14:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 11:14:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 11:14:07,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 11:14:07,671 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 11:14:07,789 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 11:14:07,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 11:14:08,199 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 11:14:08,206 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 11:14:08,207 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 11:14:08,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:14:08 BoogieIcfgContainer [2023-08-26 11:14:08,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 11:14:08,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 11:14:08,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 11:14:08,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 11:14:08,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:14:06" (1/3) ... [2023-08-26 11:14:08,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5047479d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:14:08, skipping insertion in model container [2023-08-26 11:14:08,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:14:07" (2/3) ... [2023-08-26 11:14:08,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5047479d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:14:08, skipping insertion in model container [2023-08-26 11:14:08,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:14:08" (3/3) ... [2023-08-26 11:14:08,218 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-08-26 11:14:08,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 11:14:08,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-26 11:14:08,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 11:14:08,306 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 11:14:08,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 206 transitions, 428 flow [2023-08-26 11:14:08,399 INFO L124 PetriNetUnfolderBase]: 11/204 cut-off events. [2023-08-26 11:14:08,400 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 11:14:08,408 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. [2023-08-26 11:14:08,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 206 transitions, 428 flow [2023-08-26 11:14:08,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 191 transitions, 394 flow [2023-08-26 11:14:08,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 11:14:08,423 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 191 transitions, 394 flow [2023-08-26 11:14:08,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 191 transitions, 394 flow [2023-08-26 11:14:08,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 191 transitions, 394 flow [2023-08-26 11:14:08,460 INFO L124 PetriNetUnfolderBase]: 8/191 cut-off events. [2023-08-26 11:14:08,460 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 11:14:08,462 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. [2023-08-26 11:14:08,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 7052 [2023-08-26 11:14:14,040 INFO L134 LiptonReduction]: Checked pairs total: 19909 [2023-08-26 11:14:14,041 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-26 11:14:14,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 11:14:14,057 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;@3db99728, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 11:14:14,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-26 11:14:14,059 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 11:14:14,059 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 11:14:14,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 11:14:14,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:14,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 11:14:14,060 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)] === [2023-08-26 11:14:14,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash 744, now seen corresponding path program 1 times [2023-08-26 11:14:14,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:14,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926801052] [2023-08-26 11:14:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:14,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:14,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:14,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926801052] [2023-08-26 11:14:14,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926801052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:14,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:14,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 11:14:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812864723] [2023-08-26 11:14:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:14,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 11:14:14,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:14,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 11:14:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 11:14:14,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 364 [2023-08-26 11:14:14,181 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) [2023-08-26 11:14:14,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:14,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 364 [2023-08-26 11:14:14,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:14,321 INFO L124 PetriNetUnfolderBase]: 205/510 cut-off events. [2023-08-26 11:14:14,322 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-26 11:14:14,325 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. [2023-08-26 11:14:14,329 INFO L140 encePairwiseOnDemand]: 352/364 looper letters, 25 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-26 11:14:14,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 158 flow [2023-08-26 11:14:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 11:14:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 11:14:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2023-08-26 11:14:14,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2023-08-26 11:14:14,350 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2023-08-26 11:14:14,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2023-08-26 11:14:14,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:14,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2023-08-26 11:14:14,359 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) [2023-08-26 11:14:14,364 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) [2023-08-26 11:14:14,364 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) [2023-08-26 11:14:14,366 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 132 flow. Second operand 2 states and 427 transitions. [2023-08-26 11:14:14,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 158 flow [2023-08-26 11:14:14,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 11:14:14,371 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 100 flow [2023-08-26 11:14:14,372 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} [2023-08-26 11:14:14,375 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -13 predicate places. [2023-08-26 11:14:14,375 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 100 flow [2023-08-26 11:14:14,376 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) [2023-08-26 11:14:14,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:14,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 11:14:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 11:14:14,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:14,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash 385503927, now seen corresponding path program 1 times [2023-08-26 11:14:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:14,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220493282] [2023-08-26 11:14:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:14,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:14,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220493282] [2023-08-26 11:14:14,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220493282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:14,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:14,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:14:14,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505273008] [2023-08-26 11:14:14,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:14,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:14:14,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:14,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:14:14,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:14:14,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 364 [2023-08-26 11:14:14,496 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) [2023-08-26 11:14:14,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:14,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 364 [2023-08-26 11:14:14,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:14,722 INFO L124 PetriNetUnfolderBase]: 962/1805 cut-off events. [2023-08-26 11:14:14,722 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-26 11:14:14,725 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. [2023-08-26 11:14:14,732 INFO L140 encePairwiseOnDemand]: 350/364 looper letters, 62 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-08-26 11:14:14,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 80 transitions, 310 flow [2023-08-26 11:14:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:14:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:14:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-26 11:14:14,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2023-08-26 11:14:14,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-26 11:14:14,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-26 11:14:14,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:14,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-26 11:14:14,738 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) [2023-08-26 11:14:14,742 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) [2023-08-26 11:14:14,743 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) [2023-08-26 11:14:14,743 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 100 flow. Second operand 3 states and 598 transitions. [2023-08-26 11:14:14,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 80 transitions, 310 flow [2023-08-26 11:14:14,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 80 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 11:14:14,746 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 188 flow [2023-08-26 11:14:14,746 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} [2023-08-26 11:14:14,747 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-26 11:14:14,748 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 188 flow [2023-08-26 11:14:14,749 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) [2023-08-26 11:14:14,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:14,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:14:14,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 11:14:14,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:14,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash -393775609, now seen corresponding path program 1 times [2023-08-26 11:14:14,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228988860] [2023-08-26 11:14:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:14,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:14,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228988860] [2023-08-26 11:14:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228988860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:14,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:14,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:14:14,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432401115] [2023-08-26 11:14:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:14:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:14:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:14:14,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 364 [2023-08-26 11:14:14,877 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) [2023-08-26 11:14:14,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:14,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 364 [2023-08-26 11:14:14,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:15,087 INFO L124 PetriNetUnfolderBase]: 888/1905 cut-off events. [2023-08-26 11:14:15,088 INFO L125 PetriNetUnfolderBase]: For 174/178 co-relation queries the response was YES. [2023-08-26 11:14:15,093 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. [2023-08-26 11:14:15,102 INFO L140 encePairwiseOnDemand]: 359/364 looper letters, 48 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-26 11:14:15,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 333 flow [2023-08-26 11:14:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:14:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:14:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-26 11:14:15,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558608058608059 [2023-08-26 11:14:15,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-26 11:14:15,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-26 11:14:15,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:15,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-26 11:14:15,106 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) [2023-08-26 11:14:15,108 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) [2023-08-26 11:14:15,109 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) [2023-08-26 11:14:15,109 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 188 flow. Second operand 3 states and 607 transitions. [2023-08-26 11:14:15,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 333 flow [2023-08-26 11:14:15,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:14:15,117 INFO L231 Difference]: Finished difference. Result has 54 places, 60 transitions, 192 flow [2023-08-26 11:14:15,117 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} [2023-08-26 11:14:15,118 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-08-26 11:14:15,121 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 60 transitions, 192 flow [2023-08-26 11:14:15,122 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) [2023-08-26 11:14:15,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:15,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:14:15,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 11:14:15,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:15,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:15,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1026766716, now seen corresponding path program 1 times [2023-08-26 11:14:15,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:15,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134165678] [2023-08-26 11:14:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:15,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:15,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134165678] [2023-08-26 11:14:15,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134165678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:15,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:15,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 11:14:15,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16455337] [2023-08-26 11:14:15,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:15,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:14:15,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:15,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:14:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:14:15,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 364 [2023-08-26 11:14:15,236 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) [2023-08-26 11:14:15,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:15,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 364 [2023-08-26 11:14:15,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:15,464 INFO L124 PetriNetUnfolderBase]: 752/1867 cut-off events. [2023-08-26 11:14:15,465 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-08-26 11:14:15,469 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. [2023-08-26 11:14:15,477 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 42 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-26 11:14:15,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 325 flow [2023-08-26 11:14:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:14:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:14:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-26 11:14:15,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-08-26 11:14:15,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-26 11:14:15,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-26 11:14:15,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:15,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-26 11:14:15,482 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) [2023-08-26 11:14:15,484 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) [2023-08-26 11:14:15,485 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) [2023-08-26 11:14:15,485 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 192 flow. Second operand 3 states and 609 transitions. [2023-08-26 11:14:15,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 325 flow [2023-08-26 11:14:15,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:14:15,488 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 198 flow [2023-08-26 11:14:15,488 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} [2023-08-26 11:14:15,489 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2023-08-26 11:14:15,489 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 198 flow [2023-08-26 11:14:15,490 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) [2023-08-26 11:14:15,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:15,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:14:15,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 11:14:15,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:15,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:15,491 INFO L85 PathProgramCache]: Analyzing trace with hash -91251144, now seen corresponding path program 1 times [2023-08-26 11:14:15,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:15,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148279043] [2023-08-26 11:14:15,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:15,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:15,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:15,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148279043] [2023-08-26 11:14:15,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148279043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:15,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:15,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:14:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838460833] [2023-08-26 11:14:15,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:15,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:14:15,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:14:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:14:15,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 364 [2023-08-26 11:14:15,530 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) [2023-08-26 11:14:15,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:15,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 364 [2023-08-26 11:14:15,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:15,799 INFO L124 PetriNetUnfolderBase]: 1683/3125 cut-off events. [2023-08-26 11:14:15,799 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2023-08-26 11:14:15,805 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. [2023-08-26 11:14:15,819 INFO L140 encePairwiseOnDemand]: 357/364 looper letters, 68 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-08-26 11:14:15,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 442 flow [2023-08-26 11:14:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:14:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:14:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-26 11:14:15,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293040293040293 [2023-08-26 11:14:15,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-26 11:14:15,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-26 11:14:15,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:15,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-26 11:14:15,823 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) [2023-08-26 11:14:15,825 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) [2023-08-26 11:14:15,825 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) [2023-08-26 11:14:15,826 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 198 flow. Second operand 3 states and 578 transitions. [2023-08-26 11:14:15,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 442 flow [2023-08-26 11:14:15,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:14:15,828 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 294 flow [2023-08-26 11:14:15,828 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} [2023-08-26 11:14:15,829 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-08-26 11:14:15,829 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 294 flow [2023-08-26 11:14:15,830 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) [2023-08-26 11:14:15,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:15,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:14:15,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 11:14:15,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:15,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash -477415254, now seen corresponding path program 1 times [2023-08-26 11:14:15,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:15,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130096810] [2023-08-26 11:14:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:15,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:15,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130096810] [2023-08-26 11:14:15,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130096810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:15,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:15,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 11:14:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099313076] [2023-08-26 11:14:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:15,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:14:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:14:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:14:15,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 364 [2023-08-26 11:14:15,917 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) [2023-08-26 11:14:15,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:15,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 364 [2023-08-26 11:14:15,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:16,020 INFO L124 PetriNetUnfolderBase]: 236/693 cut-off events. [2023-08-26 11:14:16,021 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-08-26 11:14:16,022 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. [2023-08-26 11:14:16,024 INFO L140 encePairwiseOnDemand]: 356/364 looper letters, 29 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2023-08-26 11:14:16,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 268 flow [2023-08-26 11:14:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:14:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:14:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2023-08-26 11:14:16,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228937728937729 [2023-08-26 11:14:16,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2023-08-26 11:14:16,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2023-08-26 11:14:16,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:16,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2023-08-26 11:14:16,028 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) [2023-08-26 11:14:16,030 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) [2023-08-26 11:14:16,031 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) [2023-08-26 11:14:16,031 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 294 flow. Second operand 3 states and 571 transitions. [2023-08-26 11:14:16,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 268 flow [2023-08-26 11:14:16,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 234 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-26 11:14:16,034 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 152 flow [2023-08-26 11:14:16,034 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} [2023-08-26 11:14:16,035 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2023-08-26 11:14:16,035 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 152 flow [2023-08-26 11:14:16,036 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) [2023-08-26 11:14:16,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:16,036 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] [2023-08-26 11:14:16,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 11:14:16,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:16,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:16,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1608743899, now seen corresponding path program 1 times [2023-08-26 11:14:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:16,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837352584] [2023-08-26 11:14:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:16,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:16,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837352584] [2023-08-26 11:14:16,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837352584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:16,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:16,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:14:16,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321337401] [2023-08-26 11:14:16,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:16,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:14:16,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:14:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:14:16,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 364 [2023-08-26 11:14:16,073 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) [2023-08-26 11:14:16,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:16,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 364 [2023-08-26 11:14:16,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:16,169 INFO L124 PetriNetUnfolderBase]: 211/585 cut-off events. [2023-08-26 11:14:16,170 INFO L125 PetriNetUnfolderBase]: For 116/120 co-relation queries the response was YES. [2023-08-26 11:14:16,171 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. [2023-08-26 11:14:16,173 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 28 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-26 11:14:16,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 223 flow [2023-08-26 11:14:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:14:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:14:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-26 11:14:16,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137362637362637 [2023-08-26 11:14:16,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-26 11:14:16,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-26 11:14:16,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:16,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-26 11:14:16,177 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) [2023-08-26 11:14:16,179 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) [2023-08-26 11:14:16,179 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) [2023-08-26 11:14:16,179 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 152 flow. Second operand 3 states and 561 transitions. [2023-08-26 11:14:16,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 223 flow [2023-08-26 11:14:16,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:14:16,181 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 147 flow [2023-08-26 11:14:16,181 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} [2023-08-26 11:14:16,182 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2023-08-26 11:14:16,182 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 147 flow [2023-08-26 11:14:16,182 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) [2023-08-26 11:14:16,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:16,182 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] [2023-08-26 11:14:16,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 11:14:16,183 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:16,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash 811848566, now seen corresponding path program 1 times [2023-08-26 11:14:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:16,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758301515] [2023-08-26 11:14:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:16,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:16,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:16,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758301515] [2023-08-26 11:14:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758301515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:16,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:16,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 11:14:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764109862] [2023-08-26 11:14:16,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:16,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:14:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:14:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:14:16,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 364 [2023-08-26 11:14:16,235 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) [2023-08-26 11:14:16,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:16,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 364 [2023-08-26 11:14:16,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:16,336 INFO L124 PetriNetUnfolderBase]: 283/857 cut-off events. [2023-08-26 11:14:16,336 INFO L125 PetriNetUnfolderBase]: For 174/178 co-relation queries the response was YES. [2023-08-26 11:14:16,337 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. [2023-08-26 11:14:16,340 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-26 11:14:16,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 303 flow [2023-08-26 11:14:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:14:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:14:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-26 11:14:16,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2023-08-26 11:14:16,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-26 11:14:16,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-26 11:14:16,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:16,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-26 11:14:16,344 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) [2023-08-26 11:14:16,346 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) [2023-08-26 11:14:16,346 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) [2023-08-26 11:14:16,346 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 147 flow. Second operand 3 states and 604 transitions. [2023-08-26 11:14:16,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 303 flow [2023-08-26 11:14:16,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:14:16,348 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 154 flow [2023-08-26 11:14:16,349 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} [2023-08-26 11:14:16,349 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-26 11:14:16,349 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 154 flow [2023-08-26 11:14:16,350 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) [2023-08-26 11:14:16,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:16,350 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] [2023-08-26 11:14:16,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 11:14:16,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:16,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash -964841638, now seen corresponding path program 1 times [2023-08-26 11:14:16,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:16,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262995572] [2023-08-26 11:14:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:16,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:16,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:16,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262995572] [2023-08-26 11:14:16,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262995572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:16,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:16,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 11:14:16,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432449017] [2023-08-26 11:14:16,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:16,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:14:16,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:16,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:14:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:14:16,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 364 [2023-08-26 11:14:16,387 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) [2023-08-26 11:14:16,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:16,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 364 [2023-08-26 11:14:16,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:16,507 INFO L124 PetriNetUnfolderBase]: 478/1077 cut-off events. [2023-08-26 11:14:16,508 INFO L125 PetriNetUnfolderBase]: For 320/324 co-relation queries the response was YES. [2023-08-26 11:14:16,509 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. [2023-08-26 11:14:16,513 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 40 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-26 11:14:16,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 249 flow [2023-08-26 11:14:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:14:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:14:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-26 11:14:16,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082417582417582 [2023-08-26 11:14:16,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-26 11:14:16,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-26 11:14:16,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:16,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-26 11:14:16,517 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) [2023-08-26 11:14:16,518 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) [2023-08-26 11:14:16,519 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) [2023-08-26 11:14:16,519 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 154 flow. Second operand 3 states and 555 transitions. [2023-08-26 11:14:16,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 249 flow [2023-08-26 11:14:16,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:14:16,521 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 156 flow [2023-08-26 11:14:16,521 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} [2023-08-26 11:14:16,522 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-08-26 11:14:16,522 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 156 flow [2023-08-26 11:14:16,522 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) [2023-08-26 11:14:16,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:16,522 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] [2023-08-26 11:14:16,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 11:14:16,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:16,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1107163605, now seen corresponding path program 1 times [2023-08-26 11:14:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:16,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239463202] [2023-08-26 11:14:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:16,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239463202] [2023-08-26 11:14:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239463202] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:14:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235054382] [2023-08-26 11:14:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:16,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:14:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:14:16,597 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) [2023-08-26 11:14:16,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 11:14:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:16,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 11:14:16,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:14:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:16,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:14:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:16,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235054382] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:14:16,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:14:16,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 11:14:16,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92878546] [2023-08-26 11:14:16,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:14:16,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 11:14:16,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:16,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 11:14:16,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 11:14:16,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 364 [2023-08-26 11:14:16,832 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) [2023-08-26 11:14:16,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:16,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 364 [2023-08-26 11:14:16,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:17,069 INFO L124 PetriNetUnfolderBase]: 588/1905 cut-off events. [2023-08-26 11:14:17,069 INFO L125 PetriNetUnfolderBase]: For 450/458 co-relation queries the response was YES. [2023-08-26 11:14:17,073 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. [2023-08-26 11:14:17,079 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 83 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2023-08-26 11:14:17,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 540 flow [2023-08-26 11:14:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:14:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:14:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1219 transitions. [2023-08-26 11:14:17,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581501831501832 [2023-08-26 11:14:17,082 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1219 transitions. [2023-08-26 11:14:17,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1219 transitions. [2023-08-26 11:14:17,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:17,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1219 transitions. [2023-08-26 11:14:17,085 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) [2023-08-26 11:14:17,088 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) [2023-08-26 11:14:17,089 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) [2023-08-26 11:14:17,089 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 156 flow. Second operand 6 states and 1219 transitions. [2023-08-26 11:14:17,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 540 flow [2023-08-26 11:14:17,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 108 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 11:14:17,092 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 193 flow [2023-08-26 11:14:17,092 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} [2023-08-26 11:14:17,093 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2023-08-26 11:14:17,093 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 193 flow [2023-08-26 11:14:17,093 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) [2023-08-26 11:14:17,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:17,094 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] [2023-08-26 11:14:17,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 11:14:17,301 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 [2023-08-26 11:14:17,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:17,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:17,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1794823815, now seen corresponding path program 2 times [2023-08-26 11:14:17,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:17,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428622790] [2023-08-26 11:14:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:17,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-26 11:14:17,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:17,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428622790] [2023-08-26 11:14:17,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428622790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:14:17,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182841427] [2023-08-26 11:14:17,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 11:14:17,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:14:17,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:14:17,449 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) [2023-08-26 11:14:17,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 11:14:17,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 11:14:17,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:14:17,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 11:14:17,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:14:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-26 11:14:17,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:14:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-08-26 11:14:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182841427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:14:17,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:14:17,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 11:14:17,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799045431] [2023-08-26 11:14:17,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:14:17,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 11:14:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 11:14:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 11:14:17,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 364 [2023-08-26 11:14:17,700 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) [2023-08-26 11:14:17,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:17,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 364 [2023-08-26 11:14:17,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:18,069 INFO L124 PetriNetUnfolderBase]: 1018/3316 cut-off events. [2023-08-26 11:14:18,069 INFO L125 PetriNetUnfolderBase]: For 1612/1624 co-relation queries the response was YES. [2023-08-26 11:14:18,077 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. [2023-08-26 11:14:18,087 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 100 selfloop transitions, 6 changer transitions 0/125 dead transitions. [2023-08-26 11:14:18,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 125 transitions, 757 flow [2023-08-26 11:14:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:14:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:14:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1209 transitions. [2023-08-26 11:14:18,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2023-08-26 11:14:18,091 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1209 transitions. [2023-08-26 11:14:18,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1209 transitions. [2023-08-26 11:14:18,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:18,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1209 transitions. [2023-08-26 11:14:18,094 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) [2023-08-26 11:14:18,097 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) [2023-08-26 11:14:18,097 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) [2023-08-26 11:14:18,097 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 193 flow. Second operand 6 states and 1209 transitions. [2023-08-26 11:14:18,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 125 transitions, 757 flow [2023-08-26 11:14:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 125 transitions, 723 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-26 11:14:18,102 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 228 flow [2023-08-26 11:14:18,102 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} [2023-08-26 11:14:18,103 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-08-26 11:14:18,103 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 228 flow [2023-08-26 11:14:18,103 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) [2023-08-26 11:14:18,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:18,104 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] [2023-08-26 11:14:18,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 11:14:18,309 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 [2023-08-26 11:14:18,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:18,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:18,310 INFO L85 PathProgramCache]: Analyzing trace with hash 727639346, now seen corresponding path program 3 times [2023-08-26 11:14:18,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:18,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065479721] [2023-08-26 11:14:18,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:18,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-08-26 11:14:18,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065479721] [2023-08-26 11:14:18,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065479721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:14:18,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:14:18,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 11:14:18,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688448414] [2023-08-26 11:14:18,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:14:18,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 11:14:18,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 11:14:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 11:14:18,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 364 [2023-08-26 11:14:18,496 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) [2023-08-26 11:14:18,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:18,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 364 [2023-08-26 11:14:18,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:18,914 INFO L124 PetriNetUnfolderBase]: 1052/2955 cut-off events. [2023-08-26 11:14:18,914 INFO L125 PetriNetUnfolderBase]: For 2319/2319 co-relation queries the response was YES. [2023-08-26 11:14:18,922 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. [2023-08-26 11:14:18,930 INFO L140 encePairwiseOnDemand]: 356/364 looper letters, 70 selfloop transitions, 7 changer transitions 4/94 dead transitions. [2023-08-26 11:14:18,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 565 flow [2023-08-26 11:14:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:14:18,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:14:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1174 transitions. [2023-08-26 11:14:18,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375457875457875 [2023-08-26 11:14:18,933 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1174 transitions. [2023-08-26 11:14:18,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1174 transitions. [2023-08-26 11:14:18,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:18,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1174 transitions. [2023-08-26 11:14:18,936 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) [2023-08-26 11:14:18,939 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) [2023-08-26 11:14:18,940 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) [2023-08-26 11:14:18,940 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 228 flow. Second operand 6 states and 1174 transitions. [2023-08-26 11:14:18,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 565 flow [2023-08-26 11:14:18,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 554 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 11:14:18,945 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 266 flow [2023-08-26 11:14:18,945 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} [2023-08-26 11:14:18,945 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2023-08-26 11:14:18,946 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 266 flow [2023-08-26 11:14:18,946 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) [2023-08-26 11:14:18,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:18,946 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] [2023-08-26 11:14:18,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 11:14:18,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:18,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash 535922410, now seen corresponding path program 4 times [2023-08-26 11:14:18,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:18,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310272515] [2023-08-26 11:14:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-26 11:14:19,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310272515] [2023-08-26 11:14:19,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310272515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:14:19,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491881465] [2023-08-26 11:14:19,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 11:14:19,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:14:19,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:14:19,133 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) [2023-08-26 11:14:19,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 11:14:19,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 11:14:19,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:14:19,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 11:14:19,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:14:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-26 11:14:19,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:14:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-08-26 11:14:19,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491881465] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:14:19,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:14:19,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 6 [2023-08-26 11:14:19,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657892186] [2023-08-26 11:14:19,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:14:19,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 11:14:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:19,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 11:14:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 11:14:19,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 364 [2023-08-26 11:14:19,561 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) [2023-08-26 11:14:19,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:19,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 364 [2023-08-26 11:14:19,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:19,897 INFO L124 PetriNetUnfolderBase]: 440/1331 cut-off events. [2023-08-26 11:14:19,898 INFO L125 PetriNetUnfolderBase]: For 1479/1479 co-relation queries the response was YES. [2023-08-26 11:14:19,901 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. [2023-08-26 11:14:19,904 INFO L140 encePairwiseOnDemand]: 353/364 looper letters, 67 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-08-26 11:14:19,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 575 flow [2023-08-26 11:14:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 11:14:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 11:14:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1530 transitions. [2023-08-26 11:14:19,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254120879120879 [2023-08-26 11:14:19,909 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1530 transitions. [2023-08-26 11:14:19,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1530 transitions. [2023-08-26 11:14:19,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:19,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1530 transitions. [2023-08-26 11:14:19,913 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) [2023-08-26 11:14:19,917 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) [2023-08-26 11:14:19,917 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) [2023-08-26 11:14:19,918 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 266 flow. Second operand 8 states and 1530 transitions. [2023-08-26 11:14:19,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 575 flow [2023-08-26 11:14:19,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 575 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 11:14:19,922 INFO L231 Difference]: Finished difference. Result has 84 places, 57 transitions, 303 flow [2023-08-26 11:14:19,922 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} [2023-08-26 11:14:19,923 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2023-08-26 11:14:19,923 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 57 transitions, 303 flow [2023-08-26 11:14:19,923 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) [2023-08-26 11:14:19,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:14:19,924 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] [2023-08-26 11:14:19,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 11:14:20,133 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 [2023-08-26 11:14:20,133 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-26 11:14:20,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:14:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash 232087102, now seen corresponding path program 5 times [2023-08-26 11:14:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:14:20,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214874216] [2023-08-26 11:14:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:14:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:14:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:14:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:20,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:14:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214874216] [2023-08-26 11:14:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214874216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:14:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061469739] [2023-08-26 11:14:20,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 11:14:20,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:14:20,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:14:20,783 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) [2023-08-26 11:14:20,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 11:14:20,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-26 11:14:20,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:14:20,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-26 11:14:20,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:14:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:21,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:14:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:14:21,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061469739] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:14:21,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:14:21,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-08-26 11:14:21,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872894996] [2023-08-26 11:14:21,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:14:21,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 11:14:21,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:14:21,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 11:14:21,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2023-08-26 11:14:21,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 364 [2023-08-26 11:14:21,776 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) [2023-08-26 11:14:21,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:14:21,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 364 [2023-08-26 11:14:21,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:14:22,658 INFO L124 PetriNetUnfolderBase]: 318/1126 cut-off events. [2023-08-26 11:14:22,659 INFO L125 PetriNetUnfolderBase]: For 1363/1373 co-relation queries the response was YES. [2023-08-26 11:14:22,662 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. [2023-08-26 11:14:22,663 INFO L140 encePairwiseOnDemand]: 357/364 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2023-08-26 11:14:22,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 867 flow [2023-08-26 11:14:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 11:14:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 11:14:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2292 transitions. [2023-08-26 11:14:22,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247252747252747 [2023-08-26 11:14:22,669 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2292 transitions. [2023-08-26 11:14:22,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2292 transitions. [2023-08-26 11:14:22,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:14:22,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2292 transitions. [2023-08-26 11:14:22,674 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) [2023-08-26 11:14:22,679 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) [2023-08-26 11:14:22,680 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) [2023-08-26 11:14:22,680 INFO L175 Difference]: Start difference. First operand has 84 places, 57 transitions, 303 flow. Second operand 12 states and 2292 transitions. [2023-08-26 11:14:22,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 867 flow [2023-08-26 11:14:22,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 125 transitions, 795 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-26 11:14:22,685 INFO L231 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2023-08-26 11:14:22,685 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} [2023-08-26 11:14:22,686 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 25 predicate places. [2023-08-26 11:14:22,686 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2023-08-26 11:14:22,687 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) [2023-08-26 11:14:22,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (30 of 31 remaining) [2023-08-26 11:14:22,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-08-26 11:14:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-08-26 11:14:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-08-26 11:14:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-08-26 11:14:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-08-26 11:14:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-08-26 11:14:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-08-26 11:14:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-08-26 11:14:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (13 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 31 remaining) [2023-08-26 11:14:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-08-26 11:14:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-08-26 11:14:22,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-08-26 11:14:22,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 11:14:22,898 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 [2023-08-26 11:14:22,899 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:14:22,903 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 11:14:22,903 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 11:14:22,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:14:22 BasicIcfg [2023-08-26 11:14:22,905 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 11:14:22,906 INFO L158 Benchmark]: Toolchain (without parser) took 16019.63ms. Allocated memory was 333.4MB in the beginning and 604.0MB in the end (delta: 270.5MB). Free memory was 307.5MB in the beginning and 479.6MB in the end (delta: -172.1MB). Peak memory consumption was 355.3MB. Max. memory is 16.0GB. [2023-08-26 11:14:22,906 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 333.4MB. Free memory is still 309.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 11:14:22,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.01ms. Allocated memory is still 333.4MB. Free memory was 307.5MB in the beginning and 280.5MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 11:14:22,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.52ms. Allocated memory is still 333.4MB. Free memory was 280.5MB in the beginning and 278.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 11:14:22,906 INFO L158 Benchmark]: Boogie Preprocessor took 43.36ms. Allocated memory is still 333.4MB. Free memory was 277.8MB in the beginning and 276.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 11:14:22,907 INFO L158 Benchmark]: RCFGBuilder took 624.21ms. Allocated memory is still 333.4MB. Free memory was 275.7MB in the beginning and 301.8MB in the end (delta: -26.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.0GB. [2023-08-26 11:14:22,907 INFO L158 Benchmark]: TraceAbstraction took 14695.22ms. Allocated memory was 333.4MB in the beginning and 604.0MB in the end (delta: 270.5MB). Free memory was 301.0MB in the beginning and 479.6MB in the end (delta: -178.6MB). Peak memory consumption was 347.6MB. Max. memory is 16.0GB. [2023-08-26 11:14:22,908 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 333.4MB. Free memory is still 309.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 589.01ms. Allocated memory is still 333.4MB. Free memory was 307.5MB in the beginning and 280.5MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.52ms. Allocated memory is still 333.4MB. Free memory was 280.5MB in the beginning and 278.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 43.36ms. Allocated memory is still 333.4MB. Free memory was 277.8MB in the beginning and 276.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 624.21ms. Allocated memory is still 333.4MB. Free memory was 275.7MB in the beginning and 301.8MB in the end (delta: -26.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.0GB. * TraceAbstraction took 14695.22ms. Allocated memory was 333.4MB in the beginning and 604.0MB in the end (delta: 270.5MB). Free memory was 301.0MB in the beginning and 479.6MB in the end (delta: -178.6MB). Peak memory consumption was 347.6MB. 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: 14.6s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, 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, 2.5s 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! [2023-08-26 11:14:22,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...