/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/goblint-regression/28-race_reach_21-deref_read_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:45:00,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:45:00,808 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 07:45:00,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:45:00,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:45:00,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:45:00,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:45:00,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:45:00,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:45:00,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:45:00,850 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:45:00,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:45:00,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:45:00,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:45:00,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:45:00,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:45:00,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:45:00,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:45:00,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:45:00,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:45:00,853 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:45:00,854 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:45:00,854 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:45:00,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:45:00,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:45:00,855 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:45:00,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:45:00,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:45:00,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:45:00,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:45:00,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:45:00,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:45:00,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:45:00,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:45:00,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:45:00,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:45:01,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:45:01,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:45:01,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:45:01,184 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:45:01,186 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:45:01,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-26 07:45:02,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:45:02,724 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:45:02,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-26 07:45:02,742 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/280d054aa/522548bc872f4295a3ca238a4070b19c/FLAGd6d2ad545 [2023-08-26 07:45:02,757 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/280d054aa/522548bc872f4295a3ca238a4070b19c [2023-08-26 07:45:02,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:45:02,763 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:45:02,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:45:02,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:45:02,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:45:02,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:45:02" (1/1) ... [2023-08-26 07:45:02,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7349313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:02, skipping insertion in model container [2023-08-26 07:45:02,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:45:02" (1/1) ... [2023-08-26 07:45:02,818 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:45:03,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:45:03,167 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:45:03,195 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:45:03,196 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:45:03,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:45:03,262 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:45:03,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03 WrapperNode [2023-08-26 07:45:03,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:45:03,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:45:03,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:45:03,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:45:03,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,302 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-08-26 07:45:03,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:45:03,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:45:03,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:45:03,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:45:03,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:45:03,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:45:03,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:45:03,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:45:03,336 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (1/1) ... [2023-08-26 07:45:03,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:45:03,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:03,366 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 07:45:03,396 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 07:45:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:45:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:45:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:45:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:45:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:45:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:45:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:45:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:45:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:45:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:45:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:45:03,415 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 07:45:03,527 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:45:03,529 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:45:03,740 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:45:03,751 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:45:03,751 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-26 07:45:03,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:45:03 BoogieIcfgContainer [2023-08-26 07:45:03,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:45:03,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:45:03,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:45:03,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:45:03,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:45:02" (1/3) ... [2023-08-26 07:45:03,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1ed712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:45:03, skipping insertion in model container [2023-08-26 07:45:03,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:03" (2/3) ... [2023-08-26 07:45:03,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1ed712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:45:03, skipping insertion in model container [2023-08-26 07:45:03,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:45:03" (3/3) ... [2023-08-26 07:45:03,761 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-08-26 07:45:03,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:45:03,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-26 07:45:03,777 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:45:03,878 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 07:45:03,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:03,989 INFO L124 PetriNetUnfolderBase]: 16/203 cut-off events. [2023-08-26 07:45:03,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:03,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 16/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 565 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-08-26 07:45:03,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:04,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:04,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:45:04,015 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:04,021 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:04,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:04,058 INFO L124 PetriNetUnfolderBase]: 16/203 cut-off events. [2023-08-26 07:45:04,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:04,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 16/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 565 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-08-26 07:45:04,063 INFO L119 LiptonReduction]: Number of co-enabled transitions 7392 [2023-08-26 07:45:06,899 INFO L134 LiptonReduction]: Checked pairs total: 27745 [2023-08-26 07:45:06,900 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-26 07:45:06,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:45:06,917 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;@7ea9927b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:45:06,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-26 07:45:06,919 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:45:06,920 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 07:45:06,920 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:06,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:06,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 07:45:06,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:06,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash 17881, now seen corresponding path program 1 times [2023-08-26 07:45:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571358626] [2023-08-26 07:45:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:06,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:07,072 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 07:45:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571358626] [2023-08-26 07:45:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571358626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:07,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:45:07,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755538048] [2023-08-26 07:45:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:07,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:45:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:45:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:45:07,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 262 [2023-08-26 07:45:07,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 143 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 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 07:45:07,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:07,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 262 [2023-08-26 07:45:07,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:07,206 INFO L124 PetriNetUnfolderBase]: 108/472 cut-off events. [2023-08-26 07:45:07,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:07,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 472 events. 108/472 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2372 event pairs, 108 based on Foata normal form. 10/434 useless extension candidates. Maximal degree in co-relation 689. Up to 248 conditions per place. [2023-08-26 07:45:07,211 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 23 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-08-26 07:45:07,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 169 flow [2023-08-26 07:45:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:45:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:45:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 313 transitions. [2023-08-26 07:45:07,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5973282442748091 [2023-08-26 07:45:07,224 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 313 transitions. [2023-08-26 07:45:07,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 313 transitions. [2023-08-26 07:45:07,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:07,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 313 transitions. [2023-08-26 07:45:07,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 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 07:45:07,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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 07:45:07,235 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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 07:45:07,236 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 143 flow. Second operand 2 states and 313 transitions. [2023-08-26 07:45:07,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 169 flow [2023-08-26 07:45:07,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:07,241 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 123 flow [2023-08-26 07:45:07,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=123, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-08-26 07:45:07,245 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2023-08-26 07:45:07,246 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 123 flow [2023-08-26 07:45:07,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 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 07:45:07,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:07,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:45:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:45:07,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:07,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash 553986, now seen corresponding path program 1 times [2023-08-26 07:45:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:07,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002321292] [2023-08-26 07:45:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:07,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:07,363 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 07:45:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002321292] [2023-08-26 07:45:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002321292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:45:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207014040] [2023-08-26 07:45:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:45:07,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 262 [2023-08-26 07:45:07,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 07:45:07,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:07,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 262 [2023-08-26 07:45:07,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:07,478 INFO L124 PetriNetUnfolderBase]: 108/485 cut-off events. [2023-08-26 07:45:07,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:07,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 485 events. 108/485 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2423 event pairs, 88 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 729. Up to 226 conditions per place. [2023-08-26 07:45:07,485 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 34 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-26 07:45:07,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 221 flow [2023-08-26 07:45:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-08-26 07:45:07,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508905852417303 [2023-08-26 07:45:07,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-08-26 07:45:07,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-08-26 07:45:07,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:07,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-08-26 07:45:07,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 07:45:07,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:45:07,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:45:07,498 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 123 flow. Second operand 3 states and 433 transitions. [2023-08-26 07:45:07,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 221 flow [2023-08-26 07:45:07,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:07,500 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 131 flow [2023-08-26 07:45:07,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-26 07:45:07,502 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2023-08-26 07:45:07,503 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 131 flow [2023-08-26 07:45:07,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 07:45:07,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:07,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 07:45:07,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 07:45:07,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:07,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash -675536531, now seen corresponding path program 1 times [2023-08-26 07:45:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:07,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363989157] [2023-08-26 07:45:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:45:07,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363989157] [2023-08-26 07:45:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363989157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:07,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:07,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:45:07,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993009288] [2023-08-26 07:45:07,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:07,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:07,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:07,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:45:07,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 262 [2023-08-26 07:45:07,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 07:45:07,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:07,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 262 [2023-08-26 07:45:07,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:07,681 INFO L124 PetriNetUnfolderBase]: 144/548 cut-off events. [2023-08-26 07:45:07,682 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-26 07:45:07,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 548 events. 144/548 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2720 event pairs, 88 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 921. Up to 301 conditions per place. [2023-08-26 07:45:07,684 INFO L140 encePairwiseOnDemand]: 257/262 looper letters, 31 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-26 07:45:07,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 208 flow [2023-08-26 07:45:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-26 07:45:07,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458015267175572 [2023-08-26 07:45:07,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-26 07:45:07,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-26 07:45:07,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:07,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-26 07:45:07,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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 07:45:07,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:45:07,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:45:07,690 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 131 flow. Second operand 3 states and 429 transitions. [2023-08-26 07:45:07,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 208 flow [2023-08-26 07:45:07,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:45:07,693 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 137 flow [2023-08-26 07:45:07,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-26 07:45:07,694 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2023-08-26 07:45:07,696 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 137 flow [2023-08-26 07:45:07,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 07:45:07,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:07,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:07,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 07:45:07,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:07,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 554229168, now seen corresponding path program 1 times [2023-08-26 07:45:07,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:07,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362079649] [2023-08-26 07:45:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:07,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362079649] [2023-08-26 07:45:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362079649] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:45:07,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103800467] [2023-08-26 07:45:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:07,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:07,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:07,811 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 07:45:07,834 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 07:45:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:07,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:45:07,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:45:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:07,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:45:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:07,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103800467] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:45:07,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:45:07,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:45:07,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425871966] [2023-08-26 07:45:07,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:45:07,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:45:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:07,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:45:07,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:45:07,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 262 [2023-08-26 07:45:07,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 134.42857142857142) internal successors, (941), 7 states have internal predecessors, (941), 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 07:45:07,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:07,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 262 [2023-08-26 07:45:07,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:08,016 INFO L124 PetriNetUnfolderBase]: 24/146 cut-off events. [2023-08-26 07:45:08,017 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-26 07:45:08,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 146 events. 24/146 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 304 event pairs, 11 based on Foata normal form. 14/157 useless extension candidates. Maximal degree in co-relation 234. Up to 50 conditions per place. [2023-08-26 07:45:08,017 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 21 selfloop transitions, 2 changer transitions 6/57 dead transitions. [2023-08-26 07:45:08,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 182 flow [2023-08-26 07:45:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:45:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:45:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 558 transitions. [2023-08-26 07:45:08,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324427480916031 [2023-08-26 07:45:08,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 558 transitions. [2023-08-26 07:45:08,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 558 transitions. [2023-08-26 07:45:08,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:08,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 558 transitions. [2023-08-26 07:45:08,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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 07:45:08,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 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 07:45:08,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 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 07:45:08,024 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 137 flow. Second operand 4 states and 558 transitions. [2023-08-26 07:45:08,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 182 flow [2023-08-26 07:45:08,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:45:08,025 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 93 flow [2023-08-26 07:45:08,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-26 07:45:08,026 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-08-26 07:45:08,026 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 93 flow [2023-08-26 07:45:08,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.42857142857142) internal successors, (941), 7 states have internal predecessors, (941), 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 07:45:08,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:08,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:08,037 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 07:45:08,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:08,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:08,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1514433505, now seen corresponding path program 1 times [2023-08-26 07:45:08,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:08,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274950994] [2023-08-26 07:45:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:08,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:08,544 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 07:45:08,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274950994] [2023-08-26 07:45:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274950994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:08,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:08,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210146723] [2023-08-26 07:45:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:08,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:08,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:08,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 262 [2023-08-26 07:45:08,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 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 07:45:08,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:08,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 262 [2023-08-26 07:45:08,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:08,657 INFO L124 PetriNetUnfolderBase]: 58/163 cut-off events. [2023-08-26 07:45:08,658 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-26 07:45:08,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 163 events. 58/163 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 285 event pairs, 34 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 352. Up to 91 conditions per place. [2023-08-26 07:45:08,659 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 31 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-26 07:45:08,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 195 flow [2023-08-26 07:45:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2023-08-26 07:45:08,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243002544529262 [2023-08-26 07:45:08,661 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2023-08-26 07:45:08,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2023-08-26 07:45:08,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:08,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2023-08-26 07:45:08,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 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 07:45:08,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 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 07:45:08,667 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 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 07:45:08,667 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 93 flow. Second operand 6 states and 667 transitions. [2023-08-26 07:45:08,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 195 flow [2023-08-26 07:45:08,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:45:08,669 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 106 flow [2023-08-26 07:45:08,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-26 07:45:08,671 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2023-08-26 07:45:08,672 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 106 flow [2023-08-26 07:45:08,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 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 07:45:08,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:08,673 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] [2023-08-26 07:45:08,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 07:45:08,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:08,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash 156080371, now seen corresponding path program 1 times [2023-08-26 07:45:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:08,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474441885] [2023-08-26 07:45:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:08,950 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 07:45:08,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:08,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474441885] [2023-08-26 07:45:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474441885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:08,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:08,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081310640] [2023-08-26 07:45:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:08,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:08,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 262 [2023-08-26 07:45:08,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 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 07:45:08,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:08,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 262 [2023-08-26 07:45:08,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:09,057 INFO L124 PetriNetUnfolderBase]: 56/158 cut-off events. [2023-08-26 07:45:09,058 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:45:09,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 158 events. 56/158 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 46 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 370. Up to 121 conditions per place. [2023-08-26 07:45:09,059 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 35 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-08-26 07:45:09,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 204 flow [2023-08-26 07:45:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 653 transitions. [2023-08-26 07:45:09,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153944020356234 [2023-08-26 07:45:09,062 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 653 transitions. [2023-08-26 07:45:09,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 653 transitions. [2023-08-26 07:45:09,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:09,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 653 transitions. [2023-08-26 07:45:09,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 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 07:45:09,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 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 07:45:09,067 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 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 07:45:09,067 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 106 flow. Second operand 6 states and 653 transitions. [2023-08-26 07:45:09,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 204 flow [2023-08-26 07:45:09,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:45:09,073 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 94 flow [2023-08-26 07:45:09,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-26 07:45:09,075 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -14 predicate places. [2023-08-26 07:45:09,075 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 94 flow [2023-08-26 07:45:09,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 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 07:45:09,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:09,076 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, 1] [2023-08-26 07:45:09,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:45:09,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:09,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1181794533, now seen corresponding path program 1 times [2023-08-26 07:45:09,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:09,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095741920] [2023-08-26 07:45:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:09,499 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 07:45:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:09,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095741920] [2023-08-26 07:45:09,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095741920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:09,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:09,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434247619] [2023-08-26 07:45:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:09,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:09,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:09,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:09,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 262 [2023-08-26 07:45:09,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 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 07:45:09,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:09,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 262 [2023-08-26 07:45:09,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:09,589 INFO L124 PetriNetUnfolderBase]: 54/153 cut-off events. [2023-08-26 07:45:09,589 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:09,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 153 events. 54/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 258 event pairs, 46 based on Foata normal form. 3/153 useless extension candidates. Maximal degree in co-relation 344. Up to 121 conditions per place. [2023-08-26 07:45:09,590 INFO L140 encePairwiseOnDemand]: 257/262 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-26 07:45:09,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 190 flow [2023-08-26 07:45:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 652 transitions. [2023-08-26 07:45:09,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41475826972010177 [2023-08-26 07:45:09,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 652 transitions. [2023-08-26 07:45:09,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 652 transitions. [2023-08-26 07:45:09,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:09,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 652 transitions. [2023-08-26 07:45:09,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 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 07:45:09,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 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 07:45:09,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 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 07:45:09,597 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 94 flow. Second operand 6 states and 652 transitions. [2023-08-26 07:45:09,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 190 flow [2023-08-26 07:45:09,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:45:09,598 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-26 07:45:09,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-26 07:45:09,598 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-08-26 07:45:09,598 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-26 07:45:09,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 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 07:45:09,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 17 remaining) [2023-08-26 07:45:09,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-26 07:45:09,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-26 07:45:09,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (13 of 17 remaining) [2023-08-26 07:45:09,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-26 07:45:09,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-26 07:45:09,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-26 07:45:09,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-26 07:45:09,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-26 07:45:09,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-26 07:45:09,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-26 07:45:09,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-26 07:45:09,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-26 07:45:09,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-26 07:45:09,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-26 07:45:09,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-26 07:45:09,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-26 07:45:09,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:45:09,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:09,606 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:45:09,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:09,625 INFO L124 PetriNetUnfolderBase]: 16/203 cut-off events. [2023-08-26 07:45:09,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:09,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 16/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 565 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-08-26 07:45:09,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:09,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:09,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:45:09,628 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:09,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:09,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 153 transitions, 311 flow [2023-08-26 07:45:09,642 INFO L124 PetriNetUnfolderBase]: 16/203 cut-off events. [2023-08-26 07:45:09,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:09,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 16/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 565 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-08-26 07:45:09,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 7392 [2023-08-26 07:45:12,221 INFO L134 LiptonReduction]: Checked pairs total: 27398 [2023-08-26 07:45:12,222 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-26 07:45:12,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:45:12,224 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;@7ea9927b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:45:12,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:45:12,227 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:45:12,227 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-26 07:45:12,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:12,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:12,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:45:12,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:45:12,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1833197683, now seen corresponding path program 1 times [2023-08-26 07:45:12,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:12,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269958934] [2023-08-26 07:45:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:45:12,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:45:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:45:12,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:45:12,280 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:45:12,280 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:45:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:45:12,281 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:45:12,282 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:45:12,283 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:45:12,283 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:45:12,316 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 07:45:12,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:12,352 INFO L124 PetriNetUnfolderBase]: 27/325 cut-off events. [2023-08-26 07:45:12,352 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:45:12,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 325 events. 27/325 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1225 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 204. Up to 6 conditions per place. [2023-08-26 07:45:12,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:12,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:12,359 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:45:12,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:12,359 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:12,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:12,392 INFO L124 PetriNetUnfolderBase]: 27/325 cut-off events. [2023-08-26 07:45:12,392 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:45:12,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 325 events. 27/325 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1225 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 204. Up to 6 conditions per place. [2023-08-26 07:45:12,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 23628 [2023-08-26 07:45:15,163 INFO L134 LiptonReduction]: Checked pairs total: 109412 [2023-08-26 07:45:15,164 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-26 07:45:15,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:45:15,166 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;@7ea9927b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:45:15,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-26 07:45:15,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:45:15,167 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 07:45:15,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:15,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:15,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 07:45:15,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:15,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash 34680, now seen corresponding path program 1 times [2023-08-26 07:45:15,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:15,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587460522] [2023-08-26 07:45:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:15,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:15,184 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 07:45:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:15,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587460522] [2023-08-26 07:45:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587460522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:15,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:45:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819810297] [2023-08-26 07:45:15,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:45:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:45:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:45:15,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 352 [2023-08-26 07:45:15,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 118 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 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 07:45:15,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:15,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 352 [2023-08-26 07:45:15,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:15,997 INFO L124 PetriNetUnfolderBase]: 3072/8347 cut-off events. [2023-08-26 07:45:15,997 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-26 07:45:16,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13301 conditions, 8347 events. 3072/8347 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 76873 event pairs, 3072 based on Foata normal form. 679/8189 useless extension candidates. Maximal degree in co-relation 9386. Up to 4902 conditions per place. [2023-08-26 07:45:16,049 INFO L140 encePairwiseOnDemand]: 336/352 looper letters, 36 selfloop transitions, 0 changer transitions 0/102 dead transitions. [2023-08-26 07:45:16,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 288 flow [2023-08-26 07:45:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:45:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:45:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 452 transitions. [2023-08-26 07:45:16,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2023-08-26 07:45:16,051 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 452 transitions. [2023-08-26 07:45:16,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 452 transitions. [2023-08-26 07:45:16,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:16,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 452 transitions. [2023-08-26 07:45:16,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 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 07:45:16,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 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 07:45:16,056 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 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 07:45:16,056 INFO L175 Difference]: Start difference. First operand has 109 places, 118 transitions, 248 flow. Second operand 2 states and 452 transitions. [2023-08-26 07:45:16,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 288 flow [2023-08-26 07:45:16,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 286 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:16,061 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 214 flow [2023-08-26 07:45:16,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=214, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2023-08-26 07:45:16,063 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -1 predicate places. [2023-08-26 07:45:16,063 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 214 flow [2023-08-26 07:45:16,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 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 07:45:16,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:16,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:45:16,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 07:45:16,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:16,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1075252, now seen corresponding path program 1 times [2023-08-26 07:45:16,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:16,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020104193] [2023-08-26 07:45:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:16,080 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 07:45:16,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:16,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020104193] [2023-08-26 07:45:16,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020104193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:16,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:16,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:45:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680095080] [2023-08-26 07:45:16,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:16,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:16,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:16,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:45:16,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 352 [2023-08-26 07:45:16,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 214 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 07:45:16,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:16,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 352 [2023-08-26 07:45:16,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:16,831 INFO L124 PetriNetUnfolderBase]: 3072/8223 cut-off events. [2023-08-26 07:45:16,832 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-26 07:45:16,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13167 conditions, 8223 events. 3072/8223 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 75203 event pairs, 2922 based on Foata normal form. 0/7410 useless extension candidates. Maximal degree in co-relation 13162. Up to 4880 conditions per place. [2023-08-26 07:45:16,889 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 48 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-08-26 07:45:16,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 342 flow [2023-08-26 07:45:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-26 07:45:16,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2023-08-26 07:45:16,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-26 07:45:16,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-26 07:45:16,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:16,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-26 07:45:16,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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 07:45:16,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 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 07:45:16,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 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 07:45:16,895 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 214 flow. Second operand 3 states and 627 transitions. [2023-08-26 07:45:16,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 342 flow [2023-08-26 07:45:16,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:16,898 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 226 flow [2023-08-26 07:45:16,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2023-08-26 07:45:16,898 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 2 predicate places. [2023-08-26 07:45:16,899 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 226 flow [2023-08-26 07:45:16,899 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 07:45:16,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:16,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:16,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:45:16,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:16,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash 879066186, now seen corresponding path program 1 times [2023-08-26 07:45:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:16,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583704753] [2023-08-26 07:45:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:16,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:16,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583704753] [2023-08-26 07:45:16,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583704753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:45:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431573266] [2023-08-26 07:45:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:16,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:16,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:16,929 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 07:45:16,952 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 07:45:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:16,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:45:17,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:45:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:45:17,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:45:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431573266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:45:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:45:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817391660] [2023-08-26 07:45:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:17,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:45:17,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 352 [2023-08-26 07:45:17,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 226 flow. Second operand has 3 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 07:45:17,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:17,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 352 [2023-08-26 07:45:17,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:17,991 INFO L124 PetriNetUnfolderBase]: 4391/10789 cut-off events. [2023-08-26 07:45:17,991 INFO L125 PetriNetUnfolderBase]: For 550/550 co-relation queries the response was YES. [2023-08-26 07:45:18,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18314 conditions, 10789 events. 4391/10789 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 96742 event pairs, 3152 based on Foata normal form. 0/10249 useless extension candidates. Maximal degree in co-relation 18307. Up to 6898 conditions per place. [2023-08-26 07:45:18,045 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 49 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-26 07:45:18,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 352 flow [2023-08-26 07:45:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-26 07:45:18,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5776515151515151 [2023-08-26 07:45:18,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-26 07:45:18,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-26 07:45:18,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:18,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-26 07:45:18,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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 07:45:18,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 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 07:45:18,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 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 07:45:18,051 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 226 flow. Second operand 3 states and 610 transitions. [2023-08-26 07:45:18,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 352 flow [2023-08-26 07:45:18,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 108 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:45:18,053 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 237 flow [2023-08-26 07:45:18,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2023-08-26 07:45:18,055 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -1 predicate places. [2023-08-26 07:45:18,055 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 237 flow [2023-08-26 07:45:18,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 07:45:18,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:18,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:18,069 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 07:45:18,260 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 07:45:18,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:18,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:18,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1139831499, now seen corresponding path program 1 times [2023-08-26 07:45:18,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:18,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610679072] [2023-08-26 07:45:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:18,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:18,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610679072] [2023-08-26 07:45:18,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610679072] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:45:18,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531735035] [2023-08-26 07:45:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:18,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:18,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:18,304 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 07:45:18,326 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 07:45:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:18,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:45:18,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:45:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:18,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:45:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531735035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:45:18,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:45:18,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:45:18,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949558740] [2023-08-26 07:45:18,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:45:18,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:45:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:45:18,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:45:18,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 352 [2023-08-26 07:45:18,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 194.42857142857142) internal successors, (1361), 7 states have internal predecessors, (1361), 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 07:45:18,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:18,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 352 [2023-08-26 07:45:18,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:18,684 INFO L124 PetriNetUnfolderBase]: 838/2364 cut-off events. [2023-08-26 07:45:18,685 INFO L125 PetriNetUnfolderBase]: For 820/820 co-relation queries the response was YES. [2023-08-26 07:45:18,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4080 conditions, 2364 events. 838/2364 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16685 event pairs, 516 based on Foata normal form. 195/2489 useless extension candidates. Maximal degree in co-relation 4073. Up to 1017 conditions per place. [2023-08-26 07:45:18,698 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 67 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-08-26 07:45:18,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 127 transitions, 428 flow [2023-08-26 07:45:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:45:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:45:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1030 transitions. [2023-08-26 07:45:18,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2023-08-26 07:45:18,701 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1030 transitions. [2023-08-26 07:45:18,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1030 transitions. [2023-08-26 07:45:18,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:18,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1030 transitions. [2023-08-26 07:45:18,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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 07:45:18,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 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 07:45:18,708 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 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 07:45:18,708 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 237 flow. Second operand 5 states and 1030 transitions. [2023-08-26 07:45:18,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 127 transitions, 428 flow [2023-08-26 07:45:18,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 127 transitions, 428 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:18,711 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 208 flow [2023-08-26 07:45:18,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2023-08-26 07:45:18,712 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -9 predicate places. [2023-08-26 07:45:18,713 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 208 flow [2023-08-26 07:45:18,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 194.42857142857142) internal successors, (1361), 7 states have internal predecessors, (1361), 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 07:45:18,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:18,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:18,721 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 07:45:18,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:18,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:18,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash -222422833, now seen corresponding path program 1 times [2023-08-26 07:45:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:18,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807373927] [2023-08-26 07:45:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:19,105 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 07:45:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807373927] [2023-08-26 07:45:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807373927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:19,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:19,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:19,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195499095] [2023-08-26 07:45:19,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:19,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:19,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:19,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:19,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:19,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 352 [2023-08-26 07:45:19,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 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 07:45:19,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:19,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 352 [2023-08-26 07:45:19,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:21,054 INFO L124 PetriNetUnfolderBase]: 10434/17429 cut-off events. [2023-08-26 07:45:21,055 INFO L125 PetriNetUnfolderBase]: For 6793/6793 co-relation queries the response was YES. [2023-08-26 07:45:21,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39100 conditions, 17429 events. 10434/17429 cut-off events. For 6793/6793 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 117410 event pairs, 3533 based on Foata normal form. 0/16035 useless extension candidates. Maximal degree in co-relation 39092. Up to 7376 conditions per place. [2023-08-26 07:45:21,154 INFO L140 encePairwiseOnDemand]: 308/352 looper letters, 275 selfloop transitions, 84 changer transitions 0/372 dead transitions. [2023-08-26 07:45:21,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 372 transitions, 1554 flow [2023-08-26 07:45:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1173 transitions. [2023-08-26 07:45:21,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5553977272727273 [2023-08-26 07:45:21,158 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1173 transitions. [2023-08-26 07:45:21,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1173 transitions. [2023-08-26 07:45:21,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:21,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1173 transitions. [2023-08-26 07:45:21,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.5) internal successors, (1173), 6 states have internal predecessors, (1173), 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 07:45:21,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:21,165 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:21,165 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 208 flow. Second operand 6 states and 1173 transitions. [2023-08-26 07:45:21,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 372 transitions, 1554 flow [2023-08-26 07:45:21,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 372 transitions, 1531 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-26 07:45:21,172 INFO L231 Difference]: Finished difference. Result has 107 places, 180 transitions, 833 flow [2023-08-26 07:45:21,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=833, PETRI_PLACES=107, PETRI_TRANSITIONS=180} [2023-08-26 07:45:21,172 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -2 predicate places. [2023-08-26 07:45:21,172 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 180 transitions, 833 flow [2023-08-26 07:45:21,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 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 07:45:21,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:21,173 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] [2023-08-26 07:45:21,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 07:45:21,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:21,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1314615583, now seen corresponding path program 1 times [2023-08-26 07:45:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:21,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432969269] [2023-08-26 07:45:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:21,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:21,369 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 07:45:21,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:21,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432969269] [2023-08-26 07:45:21,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432969269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:21,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:21,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:21,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649236583] [2023-08-26 07:45:21,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:21,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:21,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-26 07:45:21,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 180 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 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 07:45:21,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:21,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-26 07:45:21,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:23,540 INFO L124 PetriNetUnfolderBase]: 11916/19817 cut-off events. [2023-08-26 07:45:23,540 INFO L125 PetriNetUnfolderBase]: For 10099/10099 co-relation queries the response was YES. [2023-08-26 07:45:23,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56089 conditions, 19817 events. 11916/19817 cut-off events. For 10099/10099 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 134168 event pairs, 7046 based on Foata normal form. 156/19947 useless extension candidates. Maximal degree in co-relation 56078. Up to 16115 conditions per place. [2023-08-26 07:45:23,675 INFO L140 encePairwiseOnDemand]: 325/352 looper letters, 276 selfloop transitions, 86 changer transitions 0/375 dead transitions. [2023-08-26 07:45:23,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 375 transitions, 2313 flow [2023-08-26 07:45:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1046 transitions. [2023-08-26 07:45:23,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4952651515151515 [2023-08-26 07:45:23,678 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1046 transitions. [2023-08-26 07:45:23,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1046 transitions. [2023-08-26 07:45:23,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:23,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1046 transitions. [2023-08-26 07:45:23,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 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 07:45:23,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:23,684 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:23,684 INFO L175 Difference]: Start difference. First operand has 107 places, 180 transitions, 833 flow. Second operand 6 states and 1046 transitions. [2023-08-26 07:45:23,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 375 transitions, 2313 flow [2023-08-26 07:45:23,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 375 transitions, 2313 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:23,695 INFO L231 Difference]: Finished difference. Result has 117 places, 271 transitions, 1705 flow [2023-08-26 07:45:23,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1705, PETRI_PLACES=117, PETRI_TRANSITIONS=271} [2023-08-26 07:45:23,697 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 8 predicate places. [2023-08-26 07:45:23,697 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 271 transitions, 1705 flow [2023-08-26 07:45:23,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 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 07:45:23,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:23,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 07:45:23,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:45:23,697 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:23,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:23,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1343207542, now seen corresponding path program 1 times [2023-08-26 07:45:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:23,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965555056] [2023-08-26 07:45:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:23,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:45:23,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:23,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965555056] [2023-08-26 07:45:23,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965555056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:23,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:23,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:23,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092700315] [2023-08-26 07:45:23,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:23,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:23,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:23,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:23,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-26 07:45:23,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 271 transitions, 1705 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 07:45:23,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:23,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-26 07:45:23,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:26,619 INFO L124 PetriNetUnfolderBase]: 13296/22085 cut-off events. [2023-08-26 07:45:26,620 INFO L125 PetriNetUnfolderBase]: For 22777/22777 co-relation queries the response was YES. [2023-08-26 07:45:26,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71088 conditions, 22085 events. 13296/22085 cut-off events. For 22777/22777 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 152074 event pairs, 7554 based on Foata normal form. 165/22224 useless extension candidates. Maximal degree in co-relation 71072. Up to 18210 conditions per place. [2023-08-26 07:45:26,776 INFO L140 encePairwiseOnDemand]: 325/352 looper letters, 359 selfloop transitions, 101 changer transitions 0/473 dead transitions. [2023-08-26 07:45:26,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 473 transitions, 3569 flow [2023-08-26 07:45:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1042 transitions. [2023-08-26 07:45:26,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4933712121212121 [2023-08-26 07:45:26,780 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1042 transitions. [2023-08-26 07:45:26,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1042 transitions. [2023-08-26 07:45:26,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:26,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1042 transitions. [2023-08-26 07:45:26,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 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 07:45:26,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:26,786 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:26,786 INFO L175 Difference]: Start difference. First operand has 117 places, 271 transitions, 1705 flow. Second operand 6 states and 1042 transitions. [2023-08-26 07:45:26,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 473 transitions, 3569 flow [2023-08-26 07:45:26,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 473 transitions, 3553 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:26,851 INFO L231 Difference]: Finished difference. Result has 127 places, 370 transitions, 2765 flow [2023-08-26 07:45:26,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2765, PETRI_PLACES=127, PETRI_TRANSITIONS=370} [2023-08-26 07:45:26,852 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 18 predicate places. [2023-08-26 07:45:26,852 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 370 transitions, 2765 flow [2023-08-26 07:45:26,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 07:45:26,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:26,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 07:45:26,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 07:45:26,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:26,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2025808004, now seen corresponding path program 1 times [2023-08-26 07:45:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502804736] [2023-08-26 07:45:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:45:26,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502804736] [2023-08-26 07:45:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502804736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:45:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393287194] [2023-08-26 07:45:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:26,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:26,977 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 07:45:27,007 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 07:45:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:27,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-26 07:45:27,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:45:27,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 07:45:27,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:45:27,410 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 07:45:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:45:27,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:45:27,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393287194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:27,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:45:27,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-26 07:45:27,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622496659] [2023-08-26 07:45:27,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:27,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 07:45:27,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:27,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 07:45:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 07:45:27,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 352 [2023-08-26 07:45:27,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 370 transitions, 2765 flow. Second operand has 5 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 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 07:45:27,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:27,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 352 [2023-08-26 07:45:27,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:27,614 INFO L124 PetriNetUnfolderBase]: 442/1576 cut-off events. [2023-08-26 07:45:27,614 INFO L125 PetriNetUnfolderBase]: For 1498/1498 co-relation queries the response was YES. [2023-08-26 07:45:27,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 1576 events. 442/1576 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9134 event pairs, 99 based on Foata normal form. 114/1690 useless extension candidates. Maximal degree in co-relation 4534. Up to 649 conditions per place. [2023-08-26 07:45:27,623 INFO L140 encePairwiseOnDemand]: 343/352 looper letters, 33 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2023-08-26 07:45:27,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 90 transitions, 526 flow [2023-08-26 07:45:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:45:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:45:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 739 transitions. [2023-08-26 07:45:27,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248579545454546 [2023-08-26 07:45:27,636 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 739 transitions. [2023-08-26 07:45:27,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 739 transitions. [2023-08-26 07:45:27,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:27,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 739 transitions. [2023-08-26 07:45:27,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 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 07:45:27,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 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 07:45:27,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 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 07:45:27,646 INFO L175 Difference]: Start difference. First operand has 127 places, 370 transitions, 2765 flow. Second operand 4 states and 739 transitions. [2023-08-26 07:45:27,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 90 transitions, 526 flow [2023-08-26 07:45:27,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 298 flow, removed 54 selfloop flow, removed 30 redundant places. [2023-08-26 07:45:27,658 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 207 flow [2023-08-26 07:45:27,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2023-08-26 07:45:27,659 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -15 predicate places. [2023-08-26 07:45:27,659 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 207 flow [2023-08-26 07:45:27,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 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 07:45:27,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:27,672 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, 1] [2023-08-26 07:45:27,688 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 07:45:27,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 07:45:27,880 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:27,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash -155624386, now seen corresponding path program 1 times [2023-08-26 07:45:27,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:27,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175447388] [2023-08-26 07:45:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:27,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:28,098 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 07:45:28,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:28,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175447388] [2023-08-26 07:45:28,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175447388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:28,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:28,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:28,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678882214] [2023-08-26 07:45:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:28,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:28,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:28,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-26 07:45:28,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 139.16666666666666) internal successors, (835), 6 states have internal predecessors, (835), 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 07:45:28,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:28,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-26 07:45:28,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:28,380 INFO L124 PetriNetUnfolderBase]: 1034/2119 cut-off events. [2023-08-26 07:45:28,380 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2023-08-26 07:45:28,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 2119 events. 1034/2119 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10012 event pairs, 930 based on Foata normal form. 0/2096 useless extension candidates. Maximal degree in co-relation 4702. Up to 1815 conditions per place. [2023-08-26 07:45:28,390 INFO L140 encePairwiseOnDemand]: 346/352 looper letters, 80 selfloop transitions, 5 changer transitions 7/105 dead transitions. [2023-08-26 07:45:28,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 473 flow [2023-08-26 07:45:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 891 transitions. [2023-08-26 07:45:28,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2023-08-26 07:45:28,393 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 891 transitions. [2023-08-26 07:45:28,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 891 transitions. [2023-08-26 07:45:28,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:28,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 891 transitions. [2023-08-26 07:45:28,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 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 07:45:28,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:28,399 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:28,399 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 207 flow. Second operand 6 states and 891 transitions. [2023-08-26 07:45:28,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 473 flow [2023-08-26 07:45:28,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:45:28,401 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 199 flow [2023-08-26 07:45:28,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2023-08-26 07:45:28,402 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -13 predicate places. [2023-08-26 07:45:28,402 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 199 flow [2023-08-26 07:45:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.16666666666666) internal successors, (835), 6 states have internal predecessors, (835), 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 07:45:28,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:28,403 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1] [2023-08-26 07:45:28,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 07:45:28,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:28,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:28,403 INFO L85 PathProgramCache]: Analyzing trace with hash 35665366, now seen corresponding path program 1 times [2023-08-26 07:45:28,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:28,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560254198] [2023-08-26 07:45:28,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:28,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:45:28,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:28,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560254198] [2023-08-26 07:45:28,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560254198] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:28,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:28,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:28,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930057347] [2023-08-26 07:45:28,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:28,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:28,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:28,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-26 07:45:28,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 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 07:45:28,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:28,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-26 07:45:28,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:28,901 INFO L124 PetriNetUnfolderBase]: 776/1633 cut-off events. [2023-08-26 07:45:28,901 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2023-08-26 07:45:28,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 1633 events. 776/1633 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7472 event pairs, 709 based on Foata normal form. 15/1643 useless extension candidates. Maximal degree in co-relation 3646. Up to 1402 conditions per place. [2023-08-26 07:45:28,905 INFO L140 encePairwiseOnDemand]: 347/352 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2023-08-26 07:45:28,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 397 flow [2023-08-26 07:45:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 883 transitions. [2023-08-26 07:45:28,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180871212121212 [2023-08-26 07:45:28,908 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 883 transitions. [2023-08-26 07:45:28,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 883 transitions. [2023-08-26 07:45:28,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:28,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 883 transitions. [2023-08-26 07:45:28,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.16666666666666) internal successors, (883), 6 states have internal predecessors, (883), 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 07:45:28,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:28,914 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 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 07:45:28,914 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 199 flow. Second operand 6 states and 883 transitions. [2023-08-26 07:45:28,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 397 flow [2023-08-26 07:45:28,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 387 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:45:28,916 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-08-26 07:45:28,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-08-26 07:45:28,917 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -17 predicate places. [2023-08-26 07:45:28,917 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-08-26 07:45:28,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 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 07:45:28,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (22 of 23 remaining) [2023-08-26 07:45:28,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-08-26 07:45:28,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-08-26 07:45:28,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-08-26 07:45:28,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-08-26 07:45:28,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (17 of 23 remaining) [2023-08-26 07:45:28,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-08-26 07:45:28,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-08-26 07:45:28,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-08-26 07:45:28,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-08-26 07:45:28,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-08-26 07:45:28,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-08-26 07:45:28,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-08-26 07:45:28,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-08-26 07:45:28,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-08-26 07:45:28,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-08-26 07:45:28,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-08-26 07:45:28,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-08-26 07:45:28,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-08-26 07:45:28,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-08-26 07:45:28,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-08-26 07:45:28,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-08-26 07:45:28,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-08-26 07:45:28,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 07:45:28,920 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:28,921 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:45:28,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:28,960 INFO L124 PetriNetUnfolderBase]: 27/325 cut-off events. [2023-08-26 07:45:28,960 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:45:28,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 325 events. 27/325 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1225 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 204. Up to 6 conditions per place. [2023-08-26 07:45:28,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:28,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:28,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:45:28,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:28,964 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:28,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 220 transitions, 452 flow [2023-08-26 07:45:28,991 INFO L124 PetriNetUnfolderBase]: 27/325 cut-off events. [2023-08-26 07:45:28,992 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:45:28,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 325 events. 27/325 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1225 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 204. Up to 6 conditions per place. [2023-08-26 07:45:29,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 23628 [2023-08-26 07:45:31,931 INFO L134 LiptonReduction]: Checked pairs total: 109516 [2023-08-26 07:45:31,932 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-26 07:45:31,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:45:31,933 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;@7ea9927b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:45:31,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:45:31,937 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:45:31,938 INFO L124 PetriNetUnfolderBase]: 4/64 cut-off events. [2023-08-26 07:45:31,938 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:45:31,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:31,938 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 07:45:31,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:45:31,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1369379274, now seen corresponding path program 1 times [2023-08-26 07:45:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:31,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672447278] [2023-08-26 07:45:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:31,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:45:31,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:45:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:45:31,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:45:31,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:45:31,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:45:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:45:31,962 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:45:31,963 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:45:31,963 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:45:31,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 07:45:31,984 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 07:45:31,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 287 transitions, 595 flow [2023-08-26 07:45:32,037 INFO L124 PetriNetUnfolderBase]: 38/447 cut-off events. [2023-08-26 07:45:32,037 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 07:45:32,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 447 events. 38/447 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1902 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2023-08-26 07:45:32,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 287 transitions, 595 flow [2023-08-26 07:45:32,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 287 transitions, 595 flow [2023-08-26 07:45:32,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:45:32,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 287 transitions, 595 flow [2023-08-26 07:45:32,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 287 transitions, 595 flow [2023-08-26 07:45:32,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 287 transitions, 595 flow [2023-08-26 07:45:32,098 INFO L124 PetriNetUnfolderBase]: 38/447 cut-off events. [2023-08-26 07:45:32,098 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 07:45:32,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 447 events. 38/447 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1902 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2023-08-26 07:45:32,119 INFO L119 LiptonReduction]: Number of co-enabled transitions 48708 [2023-08-26 07:45:35,215 INFO L134 LiptonReduction]: Checked pairs total: 248750 [2023-08-26 07:45:35,216 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-26 07:45:35,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:45:35,217 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;@7ea9927b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:45:35,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-26 07:45:35,219 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:45:35,219 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 07:45:35,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:35,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:35,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 07:45:35,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-26 07:45:35,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash 54999, now seen corresponding path program 1 times [2023-08-26 07:45:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909826778] [2023-08-26 07:45:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:35,228 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 07:45:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909826778] [2023-08-26 07:45:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909826778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:35,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:35,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:45:35,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843113663] [2023-08-26 07:45:35,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:35,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:45:35,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:45:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:45:35,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 438 [2023-08-26 07:45:35,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 166 transitions, 353 flow. Second operand has 2 states, 2 states have (on average 261.0) internal successors, (522), 2 states have internal predecessors, (522), 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 07:45:35,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:35,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 438 [2023-08-26 07:45:35,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:46,235 INFO L124 PetriNetUnfolderBase]: 61884/126473 cut-off events. [2023-08-26 07:45:46,235 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2023-08-26 07:45:46,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212926 conditions, 126473 events. 61884/126473 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 2752. Compared 1454935 event pairs, 61884 based on Foata normal form. 8859/123581 useless extension candidates. Maximal degree in co-relation 114267. Up to 85684 conditions per place. [2023-08-26 07:45:47,069 INFO L140 encePairwiseOnDemand]: 416/438 looper letters, 49 selfloop transitions, 0 changer transitions 0/144 dead transitions. [2023-08-26 07:45:47,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 407 flow [2023-08-26 07:45:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:45:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:45:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 591 transitions. [2023-08-26 07:45:47,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746575342465754 [2023-08-26 07:45:47,072 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 591 transitions. [2023-08-26 07:45:47,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 591 transitions. [2023-08-26 07:45:47,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:47,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 591 transitions. [2023-08-26 07:45:47,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 295.5) internal successors, (591), 2 states have internal predecessors, (591), 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 07:45:47,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 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 07:45:47,075 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 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 07:45:47,075 INFO L175 Difference]: Start difference. First operand has 153 places, 166 transitions, 353 flow. Second operand 2 states and 591 transitions. [2023-08-26 07:45:47,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 407 flow [2023-08-26 07:45:47,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 401 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:47,078 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 303 flow [2023-08-26 07:45:47,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=303, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2023-08-26 07:45:47,079 INFO L281 CegarLoopForPetriNet]: 153 programPoint places, -1 predicate places. [2023-08-26 07:45:47,079 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 303 flow [2023-08-26 07:45:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.0) internal successors, (522), 2 states have internal predecessors, (522), 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 07:45:47,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:47,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:45:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 07:45:47,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-26 07:45:47,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1705659, now seen corresponding path program 1 times [2023-08-26 07:45:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266714356] [2023-08-26 07:45:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:47,109 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 07:45:47,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:47,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266714356] [2023-08-26 07:45:47,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266714356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:47,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:47,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:45:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072212470] [2023-08-26 07:45:47,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:47,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:47,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:47,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:45:47,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 438 [2023-08-26 07:45:47,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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 07:45:47,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:47,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 438 [2023-08-26 07:45:47,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:56,885 INFO L124 PetriNetUnfolderBase]: 61884/126677 cut-off events. [2023-08-26 07:45:56,886 INFO L125 PetriNetUnfolderBase]: For 530/530 co-relation queries the response was YES. [2023-08-26 07:45:57,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212923 conditions, 126677 events. 61884/126677 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 2745. Compared 1459902 event pairs, 60044 based on Foata normal form. 0/114849 useless extension candidates. Maximal degree in co-relation 212917. Up to 85662 conditions per place. [2023-08-26 07:45:57,883 INFO L140 encePairwiseOnDemand]: 435/438 looper letters, 61 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-08-26 07:45:57,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 158 transitions, 457 flow [2023-08-26 07:45:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-08-26 07:45:57,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624048706240487 [2023-08-26 07:45:57,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-08-26 07:45:57,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-08-26 07:45:57,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:57,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-08-26 07:45:57,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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 07:45:57,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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 07:45:57,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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 07:45:57,890 INFO L175 Difference]: Start difference. First operand has 152 places, 144 transitions, 303 flow. Second operand 3 states and 820 transitions. [2023-08-26 07:45:57,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 158 transitions, 457 flow [2023-08-26 07:45:57,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 158 transitions, 457 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:57,893 INFO L231 Difference]: Finished difference. Result has 155 places, 145 transitions, 315 flow [2023-08-26 07:45:57,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=155, PETRI_TRANSITIONS=145} [2023-08-26 07:45:57,893 INFO L281 CegarLoopForPetriNet]: 153 programPoint places, 2 predicate places. [2023-08-26 07:45:57,893 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 145 transitions, 315 flow [2023-08-26 07:45:57,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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 07:45:57,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:57,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:57,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:45:57,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-26 07:45:57,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash -735412724, now seen corresponding path program 1 times [2023-08-26 07:45:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:57,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000226770] [2023-08-26 07:45:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:57,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:57,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:57,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000226770] [2023-08-26 07:45:57,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000226770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:45:57,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482875907] [2023-08-26 07:45:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:57,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:57,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:57,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:45:57,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 07:45:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:58,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:45:58,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:45:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:45:58,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:45:58,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482875907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:58,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:45:58,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:45:58,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718864964] [2023-08-26 07:45:58,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:58,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:58,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:58,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:45:58,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 438 [2023-08-26 07:45:58,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 145 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 07:45:58,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:58,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 438 [2023-08-26 07:45:58,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:15,631 INFO L124 PetriNetUnfolderBase]: 123469/224628 cut-off events. [2023-08-26 07:46:15,632 INFO L125 PetriNetUnfolderBase]: For 10129/10129 co-relation queries the response was YES. [2023-08-26 07:46:16,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404676 conditions, 224628 events. 123469/224628 cut-off events. For 10129/10129 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 2432483 event pairs, 97429 based on Foata normal form. 0/212528 useless extension candidates. Maximal degree in co-relation 404668. Up to 169736 conditions per place. [2023-08-26 07:46:17,186 INFO L140 encePairwiseOnDemand]: 427/438 looper letters, 69 selfloop transitions, 4 changer transitions 0/151 dead transitions. [2023-08-26 07:46:17,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 490 flow [2023-08-26 07:46:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2023-08-26 07:46:17,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050228310502284 [2023-08-26 07:46:17,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2023-08-26 07:46:17,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2023-08-26 07:46:17,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:17,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2023-08-26 07:46:17,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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 07:46:17,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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 07:46:17,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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 07:46:17,193 INFO L175 Difference]: Start difference. First operand has 155 places, 145 transitions, 315 flow. Second operand 3 states and 795 transitions. [2023-08-26 07:46:17,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 490 flow [2023-08-26 07:46:17,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 151 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:46:17,197 INFO L231 Difference]: Finished difference. Result has 150 places, 142 transitions, 329 flow [2023-08-26 07:46:17,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=150, PETRI_TRANSITIONS=142} [2023-08-26 07:46:17,197 INFO L281 CegarLoopForPetriNet]: 153 programPoint places, -3 predicate places. [2023-08-26 07:46:17,197 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 142 transitions, 329 flow [2023-08-26 07:46:17,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 07:46:17,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:17,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:17,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-26 07:46:17,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-26 07:46:17,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-26 07:46:17,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 353756305, now seen corresponding path program 1 times [2023-08-26 07:46:17,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:17,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295703704] [2023-08-26 07:46:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:17,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:17,555 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 07:46:17,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295703704] [2023-08-26 07:46:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295703704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:17,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:17,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:46:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531114369] [2023-08-26 07:46:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:17,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:46:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:46:17,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:46:17,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 438 [2023-08-26 07:46:17,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 142 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 169.83333333333334) internal successors, (1019), 6 states have internal predecessors, (1019), 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 07:46:17,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:17,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 438 [2023-08-26 07:46:17,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand