/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_06-cond_racing1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:40:56,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:40:56,950 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 07:40:56,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:40:56,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:40:56,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:40:56,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:40:56,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:40:56,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:40:56,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:40:56,980 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:40:56,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:40:56,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:40:56,981 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:40:56,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:40:56,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:40:56,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:40:56,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:40:56,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:40:56,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:40:56,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:40:56,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:40:56,982 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:40:56,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:40:56,983 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:40:56,983 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:40:56,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:40:56,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:40:56,984 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:40:56,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:40:56,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:40:56,985 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:40:56,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:40:56,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:40:56,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:40:56,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:40:57,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:40:57,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:40:57,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:40:57,285 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:40:57,287 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:40:57,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-26 07:40:58,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:40:58,467 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:40:58,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-26 07:40:58,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79fd19830/a86a4103c0a94e27abaefbce48837c0c/FLAGcf4df2533 [2023-08-26 07:40:58,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79fd19830/a86a4103c0a94e27abaefbce48837c0c [2023-08-26 07:40:58,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:40:58,491 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:40:58,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:40:58,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:40:58,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:40:58,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:58,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c89a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58, skipping insertion in model container [2023-08-26 07:40:58,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:58,523 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:40:58,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:40:58,849 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:40:58,862 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [119] [2023-08-26 07:40:58,874 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-26 07:40:58,874 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-26 07:40:58,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:40:58,932 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:40:58,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58 WrapperNode [2023-08-26 07:40:58,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:40:58,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:40:58,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:40:58,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:40:58,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:58,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:58,985 INFO L138 Inliner]: procedures = 270, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2023-08-26 07:40:58,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:40:58,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:40:58,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:40:58,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:40:58,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:58,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:59,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:59,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:59,011 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:59,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:59,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:59,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:59,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:40:59,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:40:59,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:40:59,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:40:59,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (1/1) ... [2023-08-26 07:40:59,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:40:59,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:40:59,066 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 07:40:59,083 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 07:40:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:40:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:40:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:40:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:40:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:40:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:40:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:40:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:40:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:40:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:40:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:40:59,095 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 07:40:59,207 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:40:59,208 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:40:59,389 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:40:59,394 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:40:59,395 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 07:40:59,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:40:59 BoogieIcfgContainer [2023-08-26 07:40:59,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:40:59,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:40:59,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:40:59,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:40:59,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:40:58" (1/3) ... [2023-08-26 07:40:59,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1cd22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:40:59, skipping insertion in model container [2023-08-26 07:40:59,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:40:58" (2/3) ... [2023-08-26 07:40:59,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1cd22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:40:59, skipping insertion in model container [2023-08-26 07:40:59,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:40:59" (3/3) ... [2023-08-26 07:40:59,401 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-08-26 07:40:59,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:40:59,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 07:40:59,412 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:40:59,467 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 07:40:59,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 150 transitions, 308 flow [2023-08-26 07:40:59,578 INFO L124 PetriNetUnfolderBase]: 25/207 cut-off events. [2023-08-26 07:40:59,579 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:40:59,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 25/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 594 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2023-08-26 07:40:59,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 150 transitions, 308 flow [2023-08-26 07:40:59,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 150 transitions, 308 flow [2023-08-26 07:40:59,594 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:40:59,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 150 transitions, 308 flow [2023-08-26 07:40:59,605 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 150 transitions, 308 flow [2023-08-26 07:40:59,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 150 transitions, 308 flow [2023-08-26 07:40:59,646 INFO L124 PetriNetUnfolderBase]: 25/207 cut-off events. [2023-08-26 07:40:59,647 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:40:59,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 25/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 594 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2023-08-26 07:40:59,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 5544 [2023-08-26 07:41:02,659 INFO L134 LiptonReduction]: Checked pairs total: 14601 [2023-08-26 07:41:02,659 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-26 07:41:02,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:41:02,671 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;@32a8a8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:02,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-26 07:41:02,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:02,674 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-26 07:41:02,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:02,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:02,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:41:02,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:02,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash 17596463, now seen corresponding path program 1 times [2023-08-26 07:41:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:02,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836836006] [2023-08-26 07:41:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:02,838 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 07:41:02,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:02,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836836006] [2023-08-26 07:41:02,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836836006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:02,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698258076] [2023-08-26 07:41:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:02,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:02,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:02,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:02,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 278 [2023-08-26 07:41:02,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 07:41:02,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:02,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 278 [2023-08-26 07:41:02,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:02,954 INFO L124 PetriNetUnfolderBase]: 145/397 cut-off events. [2023-08-26 07:41:02,954 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:41:02,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 397 events. 145/397 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1865 event pairs, 110 based on Foata normal form. 37/367 useless extension candidates. Maximal degree in co-relation 688. Up to 293 conditions per place. [2023-08-26 07:41:02,959 INFO L140 encePairwiseOnDemand]: 264/278 looper letters, 37 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-08-26 07:41:02,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 198 flow [2023-08-26 07:41:02,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-26 07:41:02,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5275779376498801 [2023-08-26 07:41:02,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-26 07:41:02,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-26 07:41:02,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:02,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-26 07:41:02,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 07:41:02,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 07:41:02,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 07:41:02,987 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 112 flow. Second operand 3 states and 440 transitions. [2023-08-26 07:41:02,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 198 flow [2023-08-26 07:41:02,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:41:02,991 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 93 flow [2023-08-26 07:41:02,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-26 07:41:02,995 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-26 07:41:02,995 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 93 flow [2023-08-26 07:41:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 07:41:02,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:02,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:02,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:41:02,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:03,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1495045152, now seen corresponding path program 1 times [2023-08-26 07:41:03,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:03,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910843875] [2023-08-26 07:41:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:03,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:03,058 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 07:41:03,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:03,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910843875] [2023-08-26 07:41:03,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910843875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:03,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:03,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:03,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933676466] [2023-08-26 07:41:03,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:03,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:03,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:03,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:03,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 278 [2023-08-26 07:41:03,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 07:41:03,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:03,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 278 [2023-08-26 07:41:03,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:03,163 INFO L124 PetriNetUnfolderBase]: 308/673 cut-off events. [2023-08-26 07:41:03,164 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-26 07:41:03,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 673 events. 308/673 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3121 event pairs, 117 based on Foata normal form. 0/542 useless extension candidates. Maximal degree in co-relation 1391. Up to 359 conditions per place. [2023-08-26 07:41:03,166 INFO L140 encePairwiseOnDemand]: 269/278 looper letters, 53 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-08-26 07:41:03,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 264 flow [2023-08-26 07:41:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-26 07:41:03,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059952038369304 [2023-08-26 07:41:03,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-26 07:41:03,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-26 07:41:03,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:03,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-26 07:41:03,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 07:41:03,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 07:41:03,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 07:41:03,170 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 93 flow. Second operand 3 states and 422 transitions. [2023-08-26 07:41:03,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 264 flow [2023-08-26 07:41:03,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:03,172 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 127 flow [2023-08-26 07:41:03,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2023-08-26 07:41:03,172 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-26 07:41:03,172 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 127 flow [2023-08-26 07:41:03,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 07:41:03,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:03,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:03,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 07:41:03,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:03,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash -402736848, now seen corresponding path program 1 times [2023-08-26 07:41:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935042353] [2023-08-26 07:41:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:03,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:03,230 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 07:41:03,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:03,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935042353] [2023-08-26 07:41:03,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935042353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:41:03,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994531316] [2023-08-26 07:41:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:03,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:41:03,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:41:03,234 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 07:41:03,260 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 07:41:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:03,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:41:03,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:41:03,357 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 07:41:03,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:41:03,369 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 07:41:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994531316] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:41:03,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:41:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:41:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694336391] [2023-08-26 07:41:03,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:41:03,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:41:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:41:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:41:03,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 278 [2023-08-26 07:41:03,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 129.28571428571428) internal successors, (905), 7 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 07:41:03,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:03,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 278 [2023-08-26 07:41:03,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:03,404 INFO L124 PetriNetUnfolderBase]: 24/86 cut-off events. [2023-08-26 07:41:03,404 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-26 07:41:03,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 86 events. 24/86 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 11 based on Foata normal form. 13/99 useless extension candidates. Maximal degree in co-relation 180. Up to 50 conditions per place. [2023-08-26 07:41:03,405 INFO L140 encePairwiseOnDemand]: 274/278 looper letters, 21 selfloop transitions, 2 changer transitions 6/37 dead transitions. [2023-08-26 07:41:03,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 163 flow [2023-08-26 07:41:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:41:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:41:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2023-08-26 07:41:03,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847122302158273 [2023-08-26 07:41:03,407 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2023-08-26 07:41:03,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2023-08-26 07:41:03,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:03,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2023-08-26 07:41:03,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 07:41:03,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 07:41:03,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 07:41:03,410 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 127 flow. Second operand 4 states and 539 transitions. [2023-08-26 07:41:03,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 163 flow [2023-08-26 07:41:03,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 137 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:41:03,412 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 51 flow [2023-08-26 07:41:03,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=51, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-26 07:41:03,413 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -14 predicate places. [2023-08-26 07:41:03,413 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 51 flow [2023-08-26 07:41:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.28571428571428) internal successors, (905), 7 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 07:41:03,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:03,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:03,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 07:41:03,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:41:03,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:03,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash 79732334, now seen corresponding path program 1 times [2023-08-26 07:41:03,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:03,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867035968] [2023-08-26 07:41:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:03,655 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 07:41:03,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:03,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867035968] [2023-08-26 07:41:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867035968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:03,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:03,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:03,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543584945] [2023-08-26 07:41:03,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:03,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:03,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:03,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:03,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:03,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 278 [2023-08-26 07:41:03,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 07:41:03,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:03,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 278 [2023-08-26 07:41:03,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:03,681 INFO L124 PetriNetUnfolderBase]: 26/77 cut-off events. [2023-08-26 07:41:03,681 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-26 07:41:03,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 77 events. 26/77 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 24 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 152. Up to 66 conditions per place. [2023-08-26 07:41:03,682 INFO L140 encePairwiseOnDemand]: 275/278 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-26 07:41:03,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 93 flow [2023-08-26 07:41:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-26 07:41:03,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44844124700239807 [2023-08-26 07:41:03,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-26 07:41:03,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-26 07:41:03,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:03,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-26 07:41:03,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 07:41:03,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 07:41:03,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 07:41:03,686 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 51 flow. Second operand 3 states and 374 transitions. [2023-08-26 07:41:03,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 93 flow [2023-08-26 07:41:03,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:03,687 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 50 flow [2023-08-26 07:41:03,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-08-26 07:41:03,688 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -18 predicate places. [2023-08-26 07:41:03,688 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 50 flow [2023-08-26 07:41:03,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 07:41:03,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:03,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:03,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 07:41:03,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-26 07:41:03,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1361618887, now seen corresponding path program 1 times [2023-08-26 07:41:03,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:03,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796683066] [2023-08-26 07:41:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:03,728 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 07:41:03,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:03,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796683066] [2023-08-26 07:41:03,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796683066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:03,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:03,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480705602] [2023-08-26 07:41:03,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:03,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:03,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:03,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:03,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 278 [2023-08-26 07:41:03,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 07:41:03,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:03,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 278 [2023-08-26 07:41:03,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:03,752 INFO L124 PetriNetUnfolderBase]: 24/72 cut-off events. [2023-08-26 07:41:03,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:03,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 72 events. 24/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 22 based on Foata normal form. 3/74 useless extension candidates. Maximal degree in co-relation 147. Up to 61 conditions per place. [2023-08-26 07:41:03,752 INFO L140 encePairwiseOnDemand]: 276/278 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-26 07:41:03,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 89 flow [2023-08-26 07:41:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-26 07:41:03,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.447242206235012 [2023-08-26 07:41:03,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-26 07:41:03,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-26 07:41:03,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:03,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-26 07:41:03,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 07:41:03,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 07:41:03,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 07:41:03,756 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 50 flow. Second operand 3 states and 373 transitions. [2023-08-26 07:41:03,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 89 flow [2023-08-26 07:41:03,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:03,757 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-26 07:41:03,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-26 07:41:03,758 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -19 predicate places. [2023-08-26 07:41:03,758 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-26 07:41:03,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 07:41:03,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 11 remaining) [2023-08-26 07:41:03,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-08-26 07:41:03,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-08-26 07:41:03,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-08-26 07:41:03,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-08-26 07:41:03,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-08-26 07:41:03,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-08-26 07:41:03,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (3 of 11 remaining) [2023-08-26 07:41:03,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-08-26 07:41:03,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-08-26 07:41:03,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-08-26 07:41:03,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 07:41:03,762 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 07:41:03,763 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:41:03,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 150 transitions, 308 flow [2023-08-26 07:41:03,778 INFO L124 PetriNetUnfolderBase]: 25/207 cut-off events. [2023-08-26 07:41:03,778 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:41:03,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 25/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 594 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2023-08-26 07:41:03,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 150 transitions, 308 flow [2023-08-26 07:41:03,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 145 transitions, 295 flow [2023-08-26 07:41:03,780 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:41:03,780 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 145 transitions, 295 flow [2023-08-26 07:41:03,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 145 transitions, 295 flow [2023-08-26 07:41:03,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 145 transitions, 295 flow [2023-08-26 07:41:03,791 INFO L124 PetriNetUnfolderBase]: 24/202 cut-off events. [2023-08-26 07:41:03,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:03,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 202 events. 24/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 589 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2023-08-26 07:41:03,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 5544 [2023-08-26 07:41:06,327 INFO L134 LiptonReduction]: Checked pairs total: 13627 [2023-08-26 07:41:06,327 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-26 07:41:06,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:41:06,329 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;@32a8a8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:06,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:41:06,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:06,331 INFO L124 PetriNetUnfolderBase]: 6/32 cut-off events. [2023-08-26 07:41:06,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:06,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:06,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:41:06,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:41:06,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash -865524692, now seen corresponding path program 1 times [2023-08-26 07:41:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158195847] [2023-08-26 07:41:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:06,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:41:06,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:41:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:41:06,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:41:06,379 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:41:06,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:41:06,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:41:06,380 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:41:06,380 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:41:06,381 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:41:06,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:41:06,405 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 07:41:06,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:06,431 INFO L124 PetriNetUnfolderBase]: 43/341 cut-off events. [2023-08-26 07:41:06,431 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:41:06,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 341 events. 43/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1209 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-26 07:41:06,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:06,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:06,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:41:06,435 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:06,436 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:06,456 INFO L124 PetriNetUnfolderBase]: 43/341 cut-off events. [2023-08-26 07:41:06,456 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:41:06,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 341 events. 43/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1209 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-26 07:41:06,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 15928 [2023-08-26 07:41:09,257 INFO L134 LiptonReduction]: Checked pairs total: 56213 [2023-08-26 07:41:09,258 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-26 07:41:09,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:41:09,259 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;@32a8a8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:09,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-26 07:41:09,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:09,261 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-26 07:41:09,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:09,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:09,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:41:09,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:09,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:09,261 INFO L85 PathProgramCache]: Analyzing trace with hash 33304921, now seen corresponding path program 1 times [2023-08-26 07:41:09,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:09,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989092616] [2023-08-26 07:41:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:09,298 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 07:41:09,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:09,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989092616] [2023-08-26 07:41:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989092616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:09,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:09,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:09,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743353291] [2023-08-26 07:41:09,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:09,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:09,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:09,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:09,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:09,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 338 [2023-08-26 07:41:09,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 07:41:09,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:09,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 338 [2023-08-26 07:41:09,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:09,674 INFO L124 PetriNetUnfolderBase]: 2834/6089 cut-off events. [2023-08-26 07:41:09,675 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-26 07:41:09,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10653 conditions, 6089 events. 2834/6089 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 48600 event pairs, 1250 based on Foata normal form. 694/5877 useless extension candidates. Maximal degree in co-relation 920. Up to 4467 conditions per place. [2023-08-26 07:41:09,698 INFO L140 encePairwiseOnDemand]: 318/338 looper letters, 48 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-26 07:41:09,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 282 flow [2023-08-26 07:41:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-08-26 07:41:09,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611439842209073 [2023-08-26 07:41:09,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-08-26 07:41:09,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-08-26 07:41:09,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:09,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-08-26 07:41:09,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 07:41:09,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:09,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:09,703 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 192 flow. Second operand 3 states and 569 transitions. [2023-08-26 07:41:09,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 282 flow [2023-08-26 07:41:09,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:41:09,706 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 172 flow [2023-08-26 07:41:09,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2023-08-26 07:41:09,707 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2023-08-26 07:41:09,707 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 172 flow [2023-08-26 07:41:09,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 07:41:09,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:09,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:09,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:41:09,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:09,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1082632301, now seen corresponding path program 1 times [2023-08-26 07:41:09,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:09,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632842820] [2023-08-26 07:41:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:09,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:09,733 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 07:41:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632842820] [2023-08-26 07:41:09,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632842820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:09,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:09,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857999260] [2023-08-26 07:41:09,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:09,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:09,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:09,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:09,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 338 [2023-08-26 07:41:09,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 07:41:09,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:09,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 338 [2023-08-26 07:41:09,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:10,922 INFO L124 PetriNetUnfolderBase]: 13535/23364 cut-off events. [2023-08-26 07:41:10,922 INFO L125 PetriNetUnfolderBase]: For 979/979 co-relation queries the response was YES. [2023-08-26 07:41:10,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46153 conditions, 23364 events. 13535/23364 cut-off events. For 979/979 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 178331 event pairs, 5543 based on Foata normal form. 0/18928 useless extension candidates. Maximal degree in co-relation 46037. Up to 10730 conditions per place. [2023-08-26 07:41:11,015 INFO L140 encePairwiseOnDemand]: 319/338 looper letters, 93 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2023-08-26 07:41:11,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 506 flow [2023-08-26 07:41:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-26 07:41:11,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404339250493096 [2023-08-26 07:41:11,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-26 07:41:11,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-26 07:41:11,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:11,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-26 07:41:11,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 07:41:11,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:11,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:11,020 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 172 flow. Second operand 3 states and 548 transitions. [2023-08-26 07:41:11,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 506 flow [2023-08-26 07:41:11,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 121 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:41:11,025 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 292 flow [2023-08-26 07:41:11,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2023-08-26 07:41:11,026 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-26 07:41:11,026 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 292 flow [2023-08-26 07:41:11,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 07:41:11,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:11,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:11,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:41:11,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:11,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1625668955, now seen corresponding path program 1 times [2023-08-26 07:41:11,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:11,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723362224] [2023-08-26 07:41:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:11,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:11,067 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 07:41:11,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:11,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723362224] [2023-08-26 07:41:11,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723362224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:41:11,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986507836] [2023-08-26 07:41:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:11,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:41:11,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:41:11,069 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 07:41:11,071 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 07:41:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:11,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:41:11,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:41:11,152 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 07:41:11,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:41:11,166 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 07:41:11,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986507836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:41:11,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:41:11,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:41:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238454544] [2023-08-26 07:41:11,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:41:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:41:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:41:11,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:41:11,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 338 [2023-08-26 07:41:11,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 167.28571428571428) internal successors, (1171), 7 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 07:41:11,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:11,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 338 [2023-08-26 07:41:11,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:11,375 INFO L124 PetriNetUnfolderBase]: 894/2001 cut-off events. [2023-08-26 07:41:11,375 INFO L125 PetriNetUnfolderBase]: For 1365/1420 co-relation queries the response was YES. [2023-08-26 07:41:11,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4931 conditions, 2001 events. 894/2001 cut-off events. For 1365/1420 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 13477 event pairs, 47 based on Foata normal form. 239/2144 useless extension candidates. Maximal degree in co-relation 1262. Up to 1130 conditions per place. [2023-08-26 07:41:11,382 INFO L140 encePairwiseOnDemand]: 334/338 looper letters, 65 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-08-26 07:41:11,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 482 flow [2023-08-26 07:41:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:41:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:41:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 887 transitions. [2023-08-26 07:41:11,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248520710059171 [2023-08-26 07:41:11,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 887 transitions. [2023-08-26 07:41:11,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 887 transitions. [2023-08-26 07:41:11,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:11,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 887 transitions. [2023-08-26 07:41:11,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 07:41:11,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states 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 07:41:11,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states 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 07:41:11,389 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 292 flow. Second operand 5 states and 887 transitions. [2023-08-26 07:41:11,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 482 flow [2023-08-26 07:41:11,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 440 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:11,396 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 210 flow [2023-08-26 07:41:11,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-26 07:41:11,397 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-08-26 07:41:11,398 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 210 flow [2023-08-26 07:41:11,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 167.28571428571428) internal successors, (1171), 7 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 07:41:11,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:11,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:11,407 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 07:41:11,604 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,SelfDestructingSolverStorable8 [2023-08-26 07:41:11,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:11,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 388305753, now seen corresponding path program 1 times [2023-08-26 07:41:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836970894] [2023-08-26 07:41:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:11,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:11,623 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 07:41:11,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:11,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836970894] [2023-08-26 07:41:11,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836970894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:11,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:11,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:11,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728642914] [2023-08-26 07:41:11,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:11,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:11,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 338 [2023-08-26 07:41:11,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 07:41:11,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:11,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 338 [2023-08-26 07:41:11,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:11,805 INFO L124 PetriNetUnfolderBase]: 1940/3566 cut-off events. [2023-08-26 07:41:11,805 INFO L125 PetriNetUnfolderBase]: For 1924/1948 co-relation queries the response was YES. [2023-08-26 07:41:11,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8709 conditions, 3566 events. 1940/3566 cut-off events. For 1924/1948 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21796 event pairs, 1380 based on Foata normal form. 0/3160 useless extension candidates. Maximal degree in co-relation 7734. Up to 2841 conditions per place. [2023-08-26 07:41:11,817 INFO L140 encePairwiseOnDemand]: 330/338 looper letters, 71 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2023-08-26 07:41:11,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 465 flow [2023-08-26 07:41:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-26 07:41:11,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891518737672584 [2023-08-26 07:41:11,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-26 07:41:11,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-26 07:41:11,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:11,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-26 07:41:11,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 07:41:11,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:11,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:11,821 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 210 flow. Second operand 3 states and 496 transitions. [2023-08-26 07:41:11,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 465 flow [2023-08-26 07:41:11,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 454 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 07:41:11,824 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 289 flow [2023-08-26 07:41:11,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-08-26 07:41:11,825 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2023-08-26 07:41:11,825 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 289 flow [2023-08-26 07:41:11,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 07:41:11,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:11,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:11,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:41:11,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:11,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash -190138579, now seen corresponding path program 1 times [2023-08-26 07:41:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:11,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275708066] [2023-08-26 07:41:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:11,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:11,854 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 07:41:11,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:11,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275708066] [2023-08-26 07:41:11,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275708066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:11,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:11,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:11,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006849822] [2023-08-26 07:41:11,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:11,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:11,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:11,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 338 [2023-08-26 07:41:11,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 07:41:11,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:11,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 338 [2023-08-26 07:41:11,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:12,096 INFO L124 PetriNetUnfolderBase]: 1922/3560 cut-off events. [2023-08-26 07:41:12,096 INFO L125 PetriNetUnfolderBase]: For 2112/2133 co-relation queries the response was YES. [2023-08-26 07:41:12,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9066 conditions, 3560 events. 1922/3560 cut-off events. For 2112/2133 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 21913 event pairs, 1436 based on Foata normal form. 3/3241 useless extension candidates. Maximal degree in co-relation 8136. Up to 3038 conditions per place. [2023-08-26 07:41:12,108 INFO L140 encePairwiseOnDemand]: 331/338 looper letters, 73 selfloop transitions, 11 changer transitions 0/97 dead transitions. [2023-08-26 07:41:12,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 545 flow [2023-08-26 07:41:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-26 07:41:12,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48619329388560156 [2023-08-26 07:41:12,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-26 07:41:12,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-26 07:41:12,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:12,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-26 07:41:12,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states 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 07:41:12,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:12,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:12,112 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 289 flow. Second operand 3 states and 493 transitions. [2023-08-26 07:41:12,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 545 flow [2023-08-26 07:41:12,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:12,116 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 348 flow [2023-08-26 07:41:12,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-08-26 07:41:12,117 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2023-08-26 07:41:12,117 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 348 flow [2023-08-26 07:41:12,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 07:41:12,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:12,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:12,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 07:41:12,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:12,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:12,118 INFO L85 PathProgramCache]: Analyzing trace with hash -233230536, now seen corresponding path program 1 times [2023-08-26 07:41:12,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:12,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992230535] [2023-08-26 07:41:12,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:12,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:12,239 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 07:41:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992230535] [2023-08-26 07:41:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992230535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:12,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:12,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 07:41:12,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908852293] [2023-08-26 07:41:12,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:12,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 07:41:12,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:12,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 07:41:12,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 07:41:12,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 338 [2023-08-26 07:41:12,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 07:41:12,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:12,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 338 [2023-08-26 07:41:12,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:12,292 INFO L124 PetriNetUnfolderBase]: 122/414 cut-off events. [2023-08-26 07:41:12,292 INFO L125 PetriNetUnfolderBase]: For 241/243 co-relation queries the response was YES. [2023-08-26 07:41:12,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 414 events. 122/414 cut-off events. For 241/243 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1696 event pairs, 46 based on Foata normal form. 62/472 useless extension candidates. Maximal degree in co-relation 542. Up to 260 conditions per place. [2023-08-26 07:41:12,293 INFO L140 encePairwiseOnDemand]: 333/338 looper letters, 27 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2023-08-26 07:41:12,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 244 flow [2023-08-26 07:41:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:41:12,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:41:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 612 transitions. [2023-08-26 07:41:12,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4526627218934911 [2023-08-26 07:41:12,295 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 612 transitions. [2023-08-26 07:41:12,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 612 transitions. [2023-08-26 07:41:12,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:12,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 612 transitions. [2023-08-26 07:41:12,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 07:41:12,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states 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 07:41:12,298 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states 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 07:41:12,298 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 348 flow. Second operand 4 states and 612 transitions. [2023-08-26 07:41:12,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 244 flow [2023-08-26 07:41:12,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 192 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-26 07:41:12,299 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 121 flow [2023-08-26 07:41:12,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-08-26 07:41:12,300 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -16 predicate places. [2023-08-26 07:41:12,300 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 121 flow [2023-08-26 07:41:12,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 07:41:12,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:12,300 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 07:41:12,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 07:41:12,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:12,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:12,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1060926346, now seen corresponding path program 1 times [2023-08-26 07:41:12,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:12,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687141416] [2023-08-26 07:41:12,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:12,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:12,321 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 07:41:12,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:12,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687141416] [2023-08-26 07:41:12,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687141416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:12,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:12,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:12,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109092907] [2023-08-26 07:41:12,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:12,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:12,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:12,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:12,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 338 [2023-08-26 07:41:12,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 07:41:12,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:12,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 338 [2023-08-26 07:41:12,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:12,370 INFO L124 PetriNetUnfolderBase]: 152/452 cut-off events. [2023-08-26 07:41:12,370 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-08-26 07:41:12,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 452 events. 152/452 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1865 event pairs, 138 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 365. Up to 333 conditions per place. [2023-08-26 07:41:12,371 INFO L140 encePairwiseOnDemand]: 335/338 looper letters, 33 selfloop transitions, 2 changer transitions 3/51 dead transitions. [2023-08-26 07:41:12,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 212 flow [2023-08-26 07:41:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:12,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-26 07:41:12,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625246548323471 [2023-08-26 07:41:12,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-26 07:41:12,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-26 07:41:12,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:12,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-26 07:41:12,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 07:41:12,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:12,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:12,376 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 121 flow. Second operand 3 states and 469 transitions. [2023-08-26 07:41:12,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 212 flow [2023-08-26 07:41:12,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:12,377 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 111 flow [2023-08-26 07:41:12,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-08-26 07:41:12,377 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -17 predicate places. [2023-08-26 07:41:12,377 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 111 flow [2023-08-26 07:41:12,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 07:41:12,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:12,378 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 07:41:12,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 07:41:12,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-26 07:41:12,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:12,378 INFO L85 PathProgramCache]: Analyzing trace with hash -856070867, now seen corresponding path program 1 times [2023-08-26 07:41:12,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:12,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836804529] [2023-08-26 07:41:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:12,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:12,400 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 07:41:12,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:12,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836804529] [2023-08-26 07:41:12,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836804529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:12,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:12,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:12,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782543267] [2023-08-26 07:41:12,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:12,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:12,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:12,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:12,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:12,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 338 [2023-08-26 07:41:12,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 07:41:12,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:12,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 338 [2023-08-26 07:41:12,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:12,439 INFO L124 PetriNetUnfolderBase]: 109/331 cut-off events. [2023-08-26 07:41:12,439 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-08-26 07:41:12,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 331 events. 109/331 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1263 event pairs, 105 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 447. Up to 252 conditions per place. [2023-08-26 07:41:12,440 INFO L140 encePairwiseOnDemand]: 336/338 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-26 07:41:12,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 179 flow [2023-08-26 07:41:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-08-26 07:41:12,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45759368836291914 [2023-08-26 07:41:12,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-08-26 07:41:12,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-08-26 07:41:12,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:12,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-08-26 07:41:12,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 07:41:12,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:12,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 07:41:12,444 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 111 flow. Second operand 3 states and 464 transitions. [2023-08-26 07:41:12,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 179 flow [2023-08-26 07:41:12,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:41:12,444 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-26 07:41:12,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-26 07:41:12,445 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -21 predicate places. [2023-08-26 07:41:12,445 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-26 07:41:12,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 07:41:12,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 15 remaining) [2023-08-26 07:41:12,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-08-26 07:41:12,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-08-26 07:41:12,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-08-26 07:41:12,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (5 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-08-26 07:41:12,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-08-26 07:41:12,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:41:12,446 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:12,447 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:41:12,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:12,467 INFO L124 PetriNetUnfolderBase]: 43/341 cut-off events. [2023-08-26 07:41:12,467 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:41:12,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 341 events. 43/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1209 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-26 07:41:12,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:12,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:12,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:41:12,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:12,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:12,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 196 transitions, 410 flow [2023-08-26 07:41:12,488 INFO L124 PetriNetUnfolderBase]: 43/341 cut-off events. [2023-08-26 07:41:12,488 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:41:12,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 341 events. 43/341 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1209 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-26 07:41:12,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 15928 [2023-08-26 07:41:15,081 INFO L134 LiptonReduction]: Checked pairs total: 50218 [2023-08-26 07:41:15,081 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-26 07:41:15,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:41:15,082 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;@32a8a8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:15,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:41:15,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:15,086 INFO L124 PetriNetUnfolderBase]: 13/79 cut-off events. [2023-08-26 07:41:15,086 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 07:41:15,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:15,086 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 07:41:15,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:41:15,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1630605586, now seen corresponding path program 1 times [2023-08-26 07:41:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405566809] [2023-08-26 07:41:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:41:15,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:41:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:41:15,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:41:15,102 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:41:15,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:41:15,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 07:41:15,102 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:41:15,102 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:41:15,103 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:41:15,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 07:41:15,114 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 07:41:15,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 242 transitions, 514 flow [2023-08-26 07:41:15,146 INFO L124 PetriNetUnfolderBase]: 66/520 cut-off events. [2023-08-26 07:41:15,146 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:41:15,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 520 events. 66/520 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2000 event pairs, 1 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-26 07:41:15,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 242 transitions, 514 flow [2023-08-26 07:41:15,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 242 transitions, 514 flow [2023-08-26 07:41:15,151 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:41:15,151 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 242 transitions, 514 flow [2023-08-26 07:41:15,151 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 242 transitions, 514 flow [2023-08-26 07:41:15,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 242 transitions, 514 flow [2023-08-26 07:41:15,182 INFO L124 PetriNetUnfolderBase]: 66/520 cut-off events. [2023-08-26 07:41:15,182 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:41:15,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 520 events. 66/520 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2000 event pairs, 1 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-26 07:41:15,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 30096 [2023-08-26 07:41:17,909 INFO L134 LiptonReduction]: Checked pairs total: 107595 [2023-08-26 07:41:17,909 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-26 07:41:17,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:41:17,910 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;@32a8a8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:41:17,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-26 07:41:17,911 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:41:17,912 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-26 07:41:17,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:41:17,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:17,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:41:17,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:41:17,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash 51622329, now seen corresponding path program 1 times [2023-08-26 07:41:17,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:17,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535284462] [2023-08-26 07:41:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:17,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:17,930 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 07:41:17,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535284462] [2023-08-26 07:41:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535284462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:17,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:17,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:17,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797414047] [2023-08-26 07:41:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:17,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:17,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:17,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 407 [2023-08-26 07:41:17,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states 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 07:41:17,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:17,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 407 [2023-08-26 07:41:17,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:22,338 INFO L124 PetriNetUnfolderBase]: 48690/84384 cut-off events. [2023-08-26 07:41:22,338 INFO L125 PetriNetUnfolderBase]: For 1588/1588 co-relation queries the response was YES. [2023-08-26 07:41:22,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152912 conditions, 84384 events. 48690/84384 cut-off events. For 1588/1588 co-relation queries the response was YES. Maximal size of possible extension queue 2202. Compared 804942 event pairs, 30561 based on Foata normal form. 12762/87171 useless extension candidates. Maximal degree in co-relation 10616. Up to 67428 conditions per place. [2023-08-26 07:41:22,824 INFO L140 encePairwiseOnDemand]: 380/407 looper letters, 60 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-26 07:41:22,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 368 flow [2023-08-26 07:41:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:41:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:41:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-08-26 07:41:22,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5749385749385749 [2023-08-26 07:41:22,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-08-26 07:41:22,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-08-26 07:41:22,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:41:22,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-08-26 07:41:22,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 07:41:22,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:41:22,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:41:22,830 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 270 flow. Second operand 3 states and 702 transitions. [2023-08-26 07:41:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 368 flow [2023-08-26 07:41:22,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:41:22,833 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 234 flow [2023-08-26 07:41:22,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2023-08-26 07:41:22,833 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 0 predicate places. [2023-08-26 07:41:22,833 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 234 flow [2023-08-26 07:41:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states 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 07:41:22,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:41:22,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:41:22,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 07:41:22,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:41:22,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:41:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1375202589, now seen corresponding path program 1 times [2023-08-26 07:41:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:41:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29894270] [2023-08-26 07:41:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:41:22,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:41:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:41:22,848 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 07:41:22,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:41:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29894270] [2023-08-26 07:41:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29894270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:41:22,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:41:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:41:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761917156] [2023-08-26 07:41:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:41:22,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:41:22,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:41:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:41:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:41:22,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 407 [2023-08-26 07:41:22,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 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 07:41:22,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:41:22,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 407 [2023-08-26 07:41:22,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:41:57,118 INFO L124 PetriNetUnfolderBase]: 464683/681147 cut-off events. [2023-08-26 07:41:57,118 INFO L125 PetriNetUnfolderBase]: For 26600/26600 co-relation queries the response was YES. [2023-08-26 07:41:58,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358937 conditions, 681147 events. 464683/681147 cut-off events. For 26600/26600 co-relation queries the response was YES. Maximal size of possible extension queue 11607. Compared 6020543 event pairs, 195969 based on Foata normal form. 0/552285 useless extension candidates. Maximal degree in co-relation 1358815. Up to 325242 conditions per place. [2023-08-26 07:42:00,738 INFO L140 encePairwiseOnDemand]: 380/407 looper letters, 125 selfloop transitions, 20 changer transitions 0/164 dead transitions. [2023-08-26 07:42:00,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 164 transitions, 690 flow [2023-08-26 07:42:00,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-08-26 07:42:00,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-08-26 07:42:00,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-08-26 07:42:00,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-08-26 07:42:00,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:00,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-08-26 07:42:00,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 07:42:00,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:00,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:00,743 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 234 flow. Second operand 3 states and 666 transitions. [2023-08-26 07:42:00,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 164 transitions, 690 flow [2023-08-26 07:42:00,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 164 transitions, 687 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:42:00,771 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 406 flow [2023-08-26 07:42:00,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2023-08-26 07:42:00,771 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, 3 predicate places. [2023-08-26 07:42:00,771 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 406 flow [2023-08-26 07:42:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 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 07:42:00,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:00,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:00,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 07:42:00,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:00,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1538035437, now seen corresponding path program 1 times [2023-08-26 07:42:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383994118] [2023-08-26 07:42:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:00,793 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 07:42:00,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:00,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383994118] [2023-08-26 07:42:00,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383994118] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:42:00,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893328301] [2023-08-26 07:42:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:00,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:42:00,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:42:00,795 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 07:42:00,797 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 07:42:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:00,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:42:00,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:42:00,869 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 07:42:00,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:42:00,882 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 07:42:00,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893328301] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:42:00,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:42:00,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:42:00,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971854089] [2023-08-26 07:42:00,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:42:00,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:42:00,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:42:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:42:00,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 407 [2023-08-26 07:42:00,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states 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 07:42:00,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:00,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 407 [2023-08-26 07:42:00,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:04,002 INFO L124 PetriNetUnfolderBase]: 30211/54142 cut-off events. [2023-08-26 07:42:04,002 INFO L125 PetriNetUnfolderBase]: For 41608/43187 co-relation queries the response was YES. [2023-08-26 07:42:04,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136151 conditions, 54142 events. 30211/54142 cut-off events. For 41608/43187 co-relation queries the response was YES. Maximal size of possible extension queue 1744. Compared 522016 event pairs, 2471 based on Foata normal form. 5155/56113 useless extension candidates. Maximal degree in co-relation 14762. Up to 30848 conditions per place. [2023-08-26 07:42:04,249 INFO L140 encePairwiseOnDemand]: 403/407 looper letters, 116 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2023-08-26 07:42:04,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 172 transitions, 813 flow [2023-08-26 07:42:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:42:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:42:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1325 transitions. [2023-08-26 07:42:04,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425880425880426 [2023-08-26 07:42:04,252 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1325 transitions. [2023-08-26 07:42:04,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1325 transitions. [2023-08-26 07:42:04,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:04,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1325 transitions. [2023-08-26 07:42:04,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.83333333333334) internal successors, (1325), 6 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 07:42:04,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states 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 07:42:04,258 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states 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 07:42:04,260 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 406 flow. Second operand 6 states and 1325 transitions. [2023-08-26 07:42:04,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 172 transitions, 813 flow [2023-08-26 07:42:04,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 172 transitions, 743 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:04,294 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 309 flow [2023-08-26 07:42:04,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-08-26 07:42:04,294 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -8 predicate places. [2023-08-26 07:42:04,294 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 309 flow [2023-08-26 07:42:04,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states 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 07:42:04,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:04,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:04,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-26 07:42:04,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 07:42:04,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:04,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1994854472, now seen corresponding path program 1 times [2023-08-26 07:42:04,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:04,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029416339] [2023-08-26 07:42:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:04,521 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 07:42:04,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029416339] [2023-08-26 07:42:04,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029416339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:04,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:04,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:04,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604376849] [2023-08-26 07:42:04,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:04,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:04,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:04,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:04,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:04,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 407 [2023-08-26 07:42:04,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 07:42:04,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:04,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 407 [2023-08-26 07:42:04,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:10,158 INFO L124 PetriNetUnfolderBase]: 74297/109896 cut-off events. [2023-08-26 07:42:10,158 INFO L125 PetriNetUnfolderBase]: For 52459/53044 co-relation queries the response was YES. [2023-08-26 07:42:10,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273606 conditions, 109896 events. 74297/109896 cut-off events. For 52459/53044 co-relation queries the response was YES. Maximal size of possible extension queue 2420. Compared 834966 event pairs, 54959 based on Foata normal form. 0/94512 useless extension candidates. Maximal degree in co-relation 177216. Up to 100673 conditions per place. [2023-08-26 07:42:10,698 INFO L140 encePairwiseOnDemand]: 396/407 looper letters, 114 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2023-08-26 07:42:10,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 761 flow [2023-08-26 07:42:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-26 07:42:10,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4995904995904996 [2023-08-26 07:42:10,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-26 07:42:10,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-26 07:42:10,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:10,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-26 07:42:10,701 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 07:42:10,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:10,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:10,703 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 309 flow. Second operand 3 states and 610 transitions. [2023-08-26 07:42:10,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 761 flow [2023-08-26 07:42:10,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 746 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-26 07:42:10,721 INFO L231 Difference]: Finished difference. Result has 93 places, 114 transitions, 459 flow [2023-08-26 07:42:10,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=459, PETRI_PLACES=93, PETRI_TRANSITIONS=114} [2023-08-26 07:42:10,722 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -8 predicate places. [2023-08-26 07:42:10,722 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 114 transitions, 459 flow [2023-08-26 07:42:10,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 07:42:10,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:10,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:10,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:42:10,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:10,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1070661236, now seen corresponding path program 1 times [2023-08-26 07:42:10,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:10,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881128744] [2023-08-26 07:42:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:10,740 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 07:42:10,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:10,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881128744] [2023-08-26 07:42:10,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881128744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:10,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:10,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254771946] [2023-08-26 07:42:10,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:10,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:10,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:10,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 407 [2023-08-26 07:42:10,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 114 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 07:42:10,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:10,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 407 [2023-08-26 07:42:10,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:16,966 INFO L124 PetriNetUnfolderBase]: 76270/113218 cut-off events. [2023-08-26 07:42:16,966 INFO L125 PetriNetUnfolderBase]: For 63617/64853 co-relation queries the response was YES. [2023-08-26 07:42:17,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291847 conditions, 113218 events. 76270/113218 cut-off events. For 63617/64853 co-relation queries the response was YES. Maximal size of possible extension queue 2534. Compared 868493 event pairs, 55949 based on Foata normal form. 3/98047 useless extension candidates. Maximal degree in co-relation 201756. Up to 103115 conditions per place. [2023-08-26 07:42:17,527 INFO L140 encePairwiseOnDemand]: 396/407 looper letters, 128 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2023-08-26 07:42:17,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 167 transitions, 954 flow [2023-08-26 07:42:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-26 07:42:17,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4995904995904996 [2023-08-26 07:42:17,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-26 07:42:17,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-26 07:42:17,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:17,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-26 07:42:17,530 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 07:42:17,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:17,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:17,531 INFO L175 Difference]: Start difference. First operand has 93 places, 114 transitions, 459 flow. Second operand 3 states and 610 transitions. [2023-08-26 07:42:17,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 167 transitions, 954 flow [2023-08-26 07:42:17,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 167 transitions, 933 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:42:17,595 INFO L231 Difference]: Finished difference. Result has 95 places, 131 transitions, 625 flow [2023-08-26 07:42:17,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=625, PETRI_PLACES=95, PETRI_TRANSITIONS=131} [2023-08-26 07:42:17,596 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -6 predicate places. [2023-08-26 07:42:17,596 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 131 transitions, 625 flow [2023-08-26 07:42:17,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 07:42:17,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:17,596 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:17,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 07:42:17,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:17,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:17,597 INFO L85 PathProgramCache]: Analyzing trace with hash -178810284, now seen corresponding path program 1 times [2023-08-26 07:42:17,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:17,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615666011] [2023-08-26 07:42:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-26 07:42:17,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:17,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615666011] [2023-08-26 07:42:17,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615666011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:17,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:17,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197086305] [2023-08-26 07:42:17,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:17,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:17,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 407 [2023-08-26 07:42:17,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 131 transitions, 625 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 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 07:42:17,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:17,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 407 [2023-08-26 07:42:17,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:24,360 INFO L124 PetriNetUnfolderBase]: 80906/120203 cut-off events. [2023-08-26 07:42:24,360 INFO L125 PetriNetUnfolderBase]: For 103138/104707 co-relation queries the response was YES. [2023-08-26 07:42:24,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328143 conditions, 120203 events. 80906/120203 cut-off events. For 103138/104707 co-relation queries the response was YES. Maximal size of possible extension queue 2729. Compared 931588 event pairs, 54751 based on Foata normal form. 9/105002 useless extension candidates. Maximal degree in co-relation 228691. Up to 104047 conditions per place. [2023-08-26 07:42:24,987 INFO L140 encePairwiseOnDemand]: 395/407 looper letters, 142 selfloop transitions, 36 changer transitions 0/196 dead transitions. [2023-08-26 07:42:24,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 196 transitions, 1288 flow [2023-08-26 07:42:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-26 07:42:24,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2023-08-26 07:42:24,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-26 07:42:24,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-26 07:42:24,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:24,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-26 07:42:24,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:24,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:24,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:24,992 INFO L175 Difference]: Start difference. First operand has 95 places, 131 transitions, 625 flow. Second operand 3 states and 609 transitions. [2023-08-26 07:42:24,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 196 transitions, 1288 flow [2023-08-26 07:42:25,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 196 transitions, 1256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:42:25,396 INFO L231 Difference]: Finished difference. Result has 98 places, 161 transitions, 998 flow [2023-08-26 07:42:25,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=998, PETRI_PLACES=98, PETRI_TRANSITIONS=161} [2023-08-26 07:42:25,397 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2023-08-26 07:42:25,397 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 161 transitions, 998 flow [2023-08-26 07:42:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 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 07:42:25,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:25,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:25,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:42:25,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:25,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1721022334, now seen corresponding path program 1 times [2023-08-26 07:42:25,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:25,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425900149] [2023-08-26 07:42:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:25,455 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 07:42:25,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:25,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425900149] [2023-08-26 07:42:25,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425900149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:25,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:25,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 07:42:25,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093204684] [2023-08-26 07:42:25,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:25,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 07:42:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 07:42:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 07:42:25,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 407 [2023-08-26 07:42:25,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 161 transitions, 998 flow. Second operand has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 07:42:25,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:25,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 407 [2023-08-26 07:42:25,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:25,693 INFO L124 PetriNetUnfolderBase]: 448/1449 cut-off events. [2023-08-26 07:42:25,694 INFO L125 PetriNetUnfolderBase]: For 1398/1398 co-relation queries the response was YES. [2023-08-26 07:42:25,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 1449 events. 448/1449 cut-off events. For 1398/1398 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8507 event pairs, 164 based on Foata normal form. 435/1879 useless extension candidates. Maximal degree in co-relation 2343. Up to 932 conditions per place. [2023-08-26 07:42:25,697 INFO L140 encePairwiseOnDemand]: 400/407 looper letters, 41 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-08-26 07:42:25,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 76 transitions, 388 flow [2023-08-26 07:42:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:42:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:42:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 755 transitions. [2023-08-26 07:42:25,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46375921375921375 [2023-08-26 07:42:25,698 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 755 transitions. [2023-08-26 07:42:25,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 755 transitions. [2023-08-26 07:42:25,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:25,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 755 transitions. [2023-08-26 07:42:25,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 07:42:25,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states 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 07:42:25,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states 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 07:42:25,701 INFO L175 Difference]: Start difference. First operand has 98 places, 161 transitions, 998 flow. Second operand 4 states and 755 transitions. [2023-08-26 07:42:25,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 76 transitions, 388 flow [2023-08-26 07:42:25,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 286 flow, removed 31 selfloop flow, removed 10 redundant places. [2023-08-26 07:42:25,704 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 176 flow [2023-08-26 07:42:25,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2023-08-26 07:42:25,704 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -19 predicate places. [2023-08-26 07:42:25,704 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 176 flow [2023-08-26 07:42:25,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 07:42:25,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:25,705 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 07:42:25,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 07:42:25,705 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:25,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:25,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1409444369, now seen corresponding path program 1 times [2023-08-26 07:42:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:25,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85157338] [2023-08-26 07:42:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:25,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:25,730 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 07:42:25,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:25,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85157338] [2023-08-26 07:42:25,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85157338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:25,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:25,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:25,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344503058] [2023-08-26 07:42:25,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:25,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:25,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:25,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:25,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 407 [2023-08-26 07:42:25,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 07:42:25,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:25,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 407 [2023-08-26 07:42:25,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:25,827 INFO L124 PetriNetUnfolderBase]: 559/1545 cut-off events. [2023-08-26 07:42:25,827 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2023-08-26 07:42:25,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3394 conditions, 1545 events. 559/1545 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8747 event pairs, 525 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 1753. Up to 1203 conditions per place. [2023-08-26 07:42:25,830 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 55 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-26 07:42:25,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 316 flow [2023-08-26 07:42:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-08-26 07:42:25,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2023-08-26 07:42:25,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-08-26 07:42:25,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-08-26 07:42:25,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:25,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-08-26 07:42:25,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 07:42:25,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:25,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:25,834 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 176 flow. Second operand 3 states and 564 transitions. [2023-08-26 07:42:25,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 316 flow [2023-08-26 07:42:25,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:25,835 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 171 flow [2023-08-26 07:42:25,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2023-08-26 07:42:25,836 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -20 predicate places. [2023-08-26 07:42:25,836 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 171 flow [2023-08-26 07:42:25,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 07:42:25,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:25,836 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 07:42:25,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 07:42:25,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:25,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash -485613170, now seen corresponding path program 1 times [2023-08-26 07:42:25,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:25,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987737029] [2023-08-26 07:42:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:25,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:25,856 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 07:42:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987737029] [2023-08-26 07:42:25,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987737029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:25,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:25,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680432274] [2023-08-26 07:42:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:25,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:25,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:25,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 407 [2023-08-26 07:42:25,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 07:42:25,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:25,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 407 [2023-08-26 07:42:25,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:25,952 INFO L124 PetriNetUnfolderBase]: 545/1513 cut-off events. [2023-08-26 07:42:25,952 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-08-26 07:42:25,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 1513 events. 545/1513 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8520 event pairs, 517 based on Foata normal form. 0/1497 useless extension candidates. Maximal degree in co-relation 1979. Up to 1183 conditions per place. [2023-08-26 07:42:25,955 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 49 selfloop transitions, 2 changer transitions 3/72 dead transitions. [2023-08-26 07:42:25,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 294 flow [2023-08-26 07:42:25,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-26 07:42:25,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46027846027846026 [2023-08-26 07:42:25,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-26 07:42:25,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-26 07:42:25,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:25,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-26 07:42:25,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:25,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:25,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:25,959 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 171 flow. Second operand 3 states and 562 transitions. [2023-08-26 07:42:25,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 294 flow [2023-08-26 07:42:25,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:25,960 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 162 flow [2023-08-26 07:42:25,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2023-08-26 07:42:25,960 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -21 predicate places. [2023-08-26 07:42:25,961 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 162 flow [2023-08-26 07:42:25,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 07:42:25,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:25,961 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:25,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 07:42:25,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:42:25,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1858381144, now seen corresponding path program 1 times [2023-08-26 07:42:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:25,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096196212] [2023-08-26 07:42:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:25,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-26 07:42:25,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096196212] [2023-08-26 07:42:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096196212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:25,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:25,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:25,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800898295] [2023-08-26 07:42:25,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:25,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:25,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:25,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:25,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:25,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 407 [2023-08-26 07:42:25,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:25,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:25,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 407 [2023-08-26 07:42:25,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:42:26,055 INFO L124 PetriNetUnfolderBase]: 401/1105 cut-off events. [2023-08-26 07:42:26,055 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2023-08-26 07:42:26,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2451 conditions, 1105 events. 401/1105 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5833 event pairs, 393 based on Foata normal form. 12/1113 useless extension candidates. Maximal degree in co-relation 1522. Up to 885 conditions per place. [2023-08-26 07:42:26,056 INFO L140 encePairwiseOnDemand]: 405/407 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-08-26 07:42:26,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 262 flow [2023-08-26 07:42:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:42:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:42:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-26 07:42:26,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561834561834562 [2023-08-26 07:42:26,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-26 07:42:26,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-26 07:42:26,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:42:26,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-26 07:42:26,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:26,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:26,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 07:42:26,060 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 162 flow. Second operand 3 states and 557 transitions. [2023-08-26 07:42:26,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 262 flow [2023-08-26 07:42:26,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:42:26,061 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-08-26 07:42:26,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-08-26 07:42:26,061 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -25 predicate places. [2023-08-26 07:42:26,061 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-08-26 07:42:26,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (18 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (6 of 19 remaining) [2023-08-26 07:42:26,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-26 07:42:26,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-26 07:42:26,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-26 07:42:26,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-26 07:42:26,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-26 07:42:26,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-26 07:42:26,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 07:42:26,063 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:42:26,063 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 (1/2) [2023-08-26 07:42:26,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 242 transitions, 514 flow [2023-08-26 07:42:26,093 INFO L124 PetriNetUnfolderBase]: 66/520 cut-off events. [2023-08-26 07:42:26,094 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:42:26,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 520 events. 66/520 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2000 event pairs, 1 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-26 07:42:26,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 242 transitions, 514 flow [2023-08-26 07:42:26,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 242 transitions, 514 flow [2023-08-26 07:42:26,097 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:42:26,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 242 transitions, 514 flow [2023-08-26 07:42:26,098 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 242 transitions, 514 flow [2023-08-26 07:42:26,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 242 transitions, 514 flow [2023-08-26 07:42:26,126 INFO L124 PetriNetUnfolderBase]: 66/520 cut-off events. [2023-08-26 07:42:26,126 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:42:26,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 520 events. 66/520 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2000 event pairs, 1 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 349. Up to 16 conditions per place. [2023-08-26 07:42:26,134 INFO L119 LiptonReduction]: Number of co-enabled transitions 30096 [2023-08-26 07:42:28,716 INFO L134 LiptonReduction]: Checked pairs total: 105636 [2023-08-26 07:42:28,717 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-26 07:42:28,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:42:28,720 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;@32a8a8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:42:28,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:42:28,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:42:28,725 INFO L124 PetriNetUnfolderBase]: 22/129 cut-off events. [2023-08-26 07:42:28,725 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 07:42:28,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:28,725 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 07:42:28,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:42:28,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1525959272, now seen corresponding path program 1 times [2023-08-26 07:42:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965864482] [2023-08-26 07:42:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:42:28,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:42:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:42:28,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:42:28,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:42:28,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:42:28,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 07:42:28,758 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:42:28,759 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:42:28,759 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:42:28,759 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 07:42:28,774 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 07:42:28,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 288 transitions, 620 flow [2023-08-26 07:42:28,912 INFO L124 PetriNetUnfolderBase]: 101/791 cut-off events. [2023-08-26 07:42:28,912 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 07:42:28,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 791 events. 101/791 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3417 event pairs, 6 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 540. Up to 32 conditions per place. [2023-08-26 07:42:28,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 288 transitions, 620 flow [2023-08-26 07:42:28,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 288 transitions, 620 flow [2023-08-26 07:42:28,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:42:28,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 288 transitions, 620 flow [2023-08-26 07:42:28,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 288 transitions, 620 flow [2023-08-26 07:42:28,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 288 transitions, 620 flow [2023-08-26 07:42:28,975 INFO L124 PetriNetUnfolderBase]: 101/791 cut-off events. [2023-08-26 07:42:28,976 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 07:42:28,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 791 events. 101/791 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3417 event pairs, 6 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 540. Up to 32 conditions per place. [2023-08-26 07:42:28,996 INFO L119 LiptonReduction]: Number of co-enabled transitions 48400 [2023-08-26 07:42:31,839 INFO L134 LiptonReduction]: Checked pairs total: 208422 [2023-08-26 07:42:31,839 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-08-26 07:42:31,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:42:31,840 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;@32a8a8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:42:31,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-26 07:42:31,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:42:31,842 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-26 07:42:31,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:42:31,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:42:31,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 07:42:31,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:42:31,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:42:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash 72544882, now seen corresponding path program 1 times [2023-08-26 07:42:31,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:42:31,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337460891] [2023-08-26 07:42:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:42:31,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:42:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:42:31,863 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 07:42:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:42:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337460891] [2023-08-26 07:42:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337460891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:42:31,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:42:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:42:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955568858] [2023-08-26 07:42:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:42:31,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:42:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:42:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:42:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:42:31,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 470 [2023-08-26 07:42:31,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 151 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 07:42:31,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:42:31,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 470 [2023-08-26 07:42:31,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:43:45,964 INFO L124 PetriNetUnfolderBase]: 740884/1121219 cut-off events. [2023-08-26 07:43:45,966 INFO L125 PetriNetUnfolderBase]: For 26848/26848 co-relation queries the response was YES. [2023-08-26 07:43:49,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090536 conditions, 1121219 events. 740884/1121219 cut-off events. For 26848/26848 co-relation queries the response was YES. Maximal size of possible extension queue 21648. Compared 11585989 event pairs, 535336 based on Foata normal form. 163631/1169370 useless extension candidates. Maximal degree in co-relation 153864. Up to 954113 conditions per place. [2023-08-26 07:43:54,710 INFO L140 encePairwiseOnDemand]: 437/470 looper letters, 72 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-26 07:43:54,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 132 transitions, 456 flow [2023-08-26 07:43:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:43:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:43:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 834 transitions. [2023-08-26 07:43:54,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2023-08-26 07:43:54,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 834 transitions. [2023-08-26 07:43:54,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 834 transitions. [2023-08-26 07:43:54,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:43:54,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 834 transitions. [2023-08-26 07:43:54,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 07:43:54,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 07:43:54,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 07:43:54,716 INFO L175 Difference]: Start difference. First operand has 127 places, 151 transitions, 346 flow. Second operand 3 states and 834 transitions. [2023-08-26 07:43:54,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 132 transitions, 456 flow [2023-08-26 07:43:54,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 132 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:43:54,728 INFO L231 Difference]: Finished difference. Result has 127 places, 121 transitions, 298 flow [2023-08-26 07:43:54,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=127, PETRI_TRANSITIONS=121} [2023-08-26 07:43:54,728 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2023-08-26 07:43:54,728 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 121 transitions, 298 flow [2023-08-26 07:43:54,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 07:43:54,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:43:54,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:43:54,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-26 07:43:54,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:43:54,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:43:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1366889891, now seen corresponding path program 1 times [2023-08-26 07:43:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:43:54,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242640789] [2023-08-26 07:43:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:43:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:43:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:43:54,745 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 07:43:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:43:54,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242640789] [2023-08-26 07:43:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242640789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:43:54,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:43:54,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:43:54,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246605779] [2023-08-26 07:43:54,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:43:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:43:54,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:43:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:43:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:43:54,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 470 [2023-08-26 07:43:54,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 121 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states 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 07:43:54,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:43:54,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 470 [2023-08-26 07:43:54,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand