/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 03:59:41,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 03:59:41,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 03:59:41,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 03:59:41,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 03:59:41,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 03:59:41,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 03:59:41,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 03:59:41,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 03:59:41,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 03:59:41,761 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 03:59:41,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 03:59:41,761 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 03:59:41,763 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 03:59:41,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 03:59:41,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 03:59:41,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 03:59:41,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 03:59:41,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 03:59:41,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 03:59:41,764 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 03:59:41,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 03:59:41,765 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 03:59:41,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 03:59:41,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 03:59:41,766 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 03:59:41,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 03:59:41,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:59:41,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 03:59:41,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 03:59:41,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 03:59:41,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 03:59:41,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 03:59:41,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 03:59:41,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 03:59:41,769 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 03:59:42,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 03:59:42,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 03:59:42,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 03:59:42,098 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 03:59:42,099 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 03:59:42,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-25 03:59:43,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 03:59:43,641 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 03:59:43,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-25 03:59:43,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04bc57488/fda4e0a4e78f4434a0ed9a18549f7364/FLAGfcdc43d0e [2023-08-25 03:59:43,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04bc57488/fda4e0a4e78f4434a0ed9a18549f7364 [2023-08-25 03:59:43,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 03:59:43,673 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 03:59:43,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 03:59:43,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 03:59:43,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 03:59:43,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:59:43" (1/1) ... [2023-08-25 03:59:43,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600c6598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:43, skipping insertion in model container [2023-08-25 03:59:43,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:59:43" (1/1) ... [2023-08-25 03:59:43,721 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 03:59:44,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:59:44,082 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 03:59:44,112 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:59:44,114 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:59:44,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:59:44,186 INFO L206 MainTranslator]: Completed translation [2023-08-25 03:59:44,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44 WrapperNode [2023-08-25 03:59:44,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 03:59:44,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 03:59:44,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 03:59:44,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 03:59:44,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,253 INFO L138 Inliner]: procedures = 172, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 130 [2023-08-25 03:59:44,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 03:59:44,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 03:59:44,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 03:59:44,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 03:59:44,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 03:59:44,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 03:59:44,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 03:59:44,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 03:59:44,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (1/1) ... [2023-08-25 03:59:44,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:59:44,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:59:44,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 03:59:44,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 03:59:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 03:59:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 03:59:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 03:59:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 03:59:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 03:59:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 03:59:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 03:59:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 03:59:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 03:59:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 03:59:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 03:59:44,359 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 03:59:44,506 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 03:59:44,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 03:59:44,689 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 03:59:44,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 03:59:44,696 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-25 03:59:44,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:59:44 BoogieIcfgContainer [2023-08-25 03:59:44,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 03:59:44,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 03:59:44,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 03:59:44,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 03:59:44,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 03:59:43" (1/3) ... [2023-08-25 03:59:44,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe20bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:59:44, skipping insertion in model container [2023-08-25 03:59:44,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:44" (2/3) ... [2023-08-25 03:59:44,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe20bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:59:44, skipping insertion in model container [2023-08-25 03:59:44,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:59:44" (3/3) ... [2023-08-25 03:59:44,706 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-08-25 03:59:44,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 03:59:44,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 03:59:44,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 03:59:44,783 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 03:59:44,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 134 transitions, 276 flow [2023-08-25 03:59:44,952 INFO L124 PetriNetUnfolderBase]: 19/184 cut-off events. [2023-08-25 03:59:44,952 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:59:44,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 184 events. 19/184 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 566 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-08-25 03:59:44,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 134 transitions, 276 flow [2023-08-25 03:59:44,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 134 transitions, 276 flow [2023-08-25 03:59:44,973 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:44,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 134 transitions, 276 flow [2023-08-25 03:59:44,987 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 134 transitions, 276 flow [2023-08-25 03:59:44,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 134 transitions, 276 flow [2023-08-25 03:59:45,017 INFO L124 PetriNetUnfolderBase]: 19/184 cut-off events. [2023-08-25 03:59:45,018 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:59:45,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 184 events. 19/184 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 566 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-08-25 03:59:45,022 INFO L119 LiptonReduction]: Number of co-enabled transitions 5152 [2023-08-25 03:59:47,608 INFO L134 LiptonReduction]: Checked pairs total: 12321 [2023-08-25 03:59:47,609 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-25 03:59:47,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:47,631 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;@28800c34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:47,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-25 03:59:47,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:47,634 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-25 03:59:47,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:47,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:47,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:47,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 03:59:47,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:47,639 INFO L85 PathProgramCache]: Analyzing trace with hash 15629248, now seen corresponding path program 1 times [2023-08-25 03:59:47,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:47,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626300727] [2023-08-25 03:59:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:47,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:47,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626300727] [2023-08-25 03:59:47,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626300727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:47,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:47,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:47,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284734074] [2023-08-25 03:59:47,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:47,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:47,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:47,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 236 [2023-08-25 03:59:47,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:47,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:47,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 236 [2023-08-25 03:59:47,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:48,062 INFO L124 PetriNetUnfolderBase]: 132/355 cut-off events. [2023-08-25 03:59:48,063 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:59:48,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 355 events. 132/355 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1758 event pairs, 0 based on Foata normal form. 50/333 useless extension candidates. Maximal degree in co-relation 622. Up to 280 conditions per place. [2023-08-25 03:59:48,071 INFO L140 encePairwiseOnDemand]: 222/236 looper letters, 36 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-08-25 03:59:48,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 194 flow [2023-08-25 03:59:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-25 03:59:48,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522598870056498 [2023-08-25 03:59:48,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-25 03:59:48,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-25 03:59:48,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:48,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-25 03:59:48,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:48,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:48,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:48,101 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 112 flow. Second operand 3 states and 391 transitions. [2023-08-25 03:59:48,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 194 flow [2023-08-25 03:59:48,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:59:48,108 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 89 flow [2023-08-25 03:59:48,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-25 03:59:48,113 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-25 03:59:48,114 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 89 flow [2023-08-25 03:59:48,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:48,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:48,114 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 03:59:48,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 03:59:48,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 03:59:48,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:48,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2114553235, now seen corresponding path program 1 times [2023-08-25 03:59:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480611997] [2023-08-25 03:59:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:48,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:48,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:59:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:48,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:59:48,207 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:59:48,209 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-08-25 03:59:48,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-08-25 03:59:48,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-08-25 03:59:48,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (8 of 12 remaining) [2023-08-25 03:59:48,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-25 03:59:48,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-25 03:59:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-25 03:59:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-25 03:59:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-25 03:59:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-25 03:59:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-25 03:59:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-25 03:59:48,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 03:59:48,213 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 03:59:48,215 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:59:48,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 03:59:48,243 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 03:59:48,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-25 03:59:48,279 INFO L124 PetriNetUnfolderBase]: 34/313 cut-off events. [2023-08-25 03:59:48,280 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 03:59:48,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 313 events. 34/313 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1144 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-25 03:59:48,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 182 transitions, 382 flow [2023-08-25 03:59:48,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 182 transitions, 382 flow [2023-08-25 03:59:48,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:48,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-25 03:59:48,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-25 03:59:48,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-25 03:59:48,315 INFO L124 PetriNetUnfolderBase]: 34/313 cut-off events. [2023-08-25 03:59:48,315 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 03:59:48,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 313 events. 34/313 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1144 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-25 03:59:48,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 15548 [2023-08-25 03:59:50,799 INFO L134 LiptonReduction]: Checked pairs total: 49386 [2023-08-25 03:59:50,799 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-25 03:59:50,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:50,803 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;@28800c34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:50,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-25 03:59:50,805 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:50,805 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-25 03:59:50,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:50,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:50,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:50,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:59:50,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash 26496588, now seen corresponding path program 1 times [2023-08-25 03:59:50,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:50,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909809814] [2023-08-25 03:59:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:50,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:50,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:50,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909809814] [2023-08-25 03:59:50,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909809814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:50,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:50,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:50,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532948361] [2023-08-25 03:59:50,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:50,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:50,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:50,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:50,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:50,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 307 [2023-08-25 03:59:50,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:50,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:50,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 307 [2023-08-25 03:59:50,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:51,259 INFO L124 PetriNetUnfolderBase]: 2242/4759 cut-off events. [2023-08-25 03:59:51,259 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-25 03:59:51,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8453 conditions, 4759 events. 2242/4759 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 36047 event pairs, 1982 based on Foata normal form. 488/4554 useless extension candidates. Maximal degree in co-relation 5576. Up to 3611 conditions per place. [2023-08-25 03:59:51,296 INFO L140 encePairwiseOnDemand]: 288/307 looper letters, 45 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-25 03:59:51,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 272 flow [2023-08-25 03:59:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-08-25 03:59:51,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678610206297503 [2023-08-25 03:59:51,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-08-25 03:59:51,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-08-25 03:59:51,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:51,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-08-25 03:59:51,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:51,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:51,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:51,305 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 188 flow. Second operand 3 states and 523 transitions. [2023-08-25 03:59:51,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 272 flow [2023-08-25 03:59:51,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:59:51,308 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 166 flow [2023-08-25 03:59:51,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-08-25 03:59:51,309 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2023-08-25 03:59:51,309 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 166 flow [2023-08-25 03:59:51,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:51,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:51,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:59:51,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 03:59:51,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:59:51,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash -407279358, now seen corresponding path program 1 times [2023-08-25 03:59:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759032862] [2023-08-25 03:59:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:51,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:51,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759032862] [2023-08-25 03:59:51,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759032862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:51,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:51,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:51,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366062545] [2023-08-25 03:59:51,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:51,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:51,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:51,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 307 [2023-08-25 03:59:51,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:51,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:51,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 307 [2023-08-25 03:59:51,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:52,936 INFO L124 PetriNetUnfolderBase]: 11748/20285 cut-off events. [2023-08-25 03:59:52,937 INFO L125 PetriNetUnfolderBase]: For 1079/1079 co-relation queries the response was YES. [2023-08-25 03:59:52,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40232 conditions, 20285 events. 11748/20285 cut-off events. For 1079/1079 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 153207 event pairs, 4400 based on Foata normal form. 0/16468 useless extension candidates. Maximal degree in co-relation 40116. Up to 9855 conditions per place. [2023-08-25 03:59:53,074 INFO L140 encePairwiseOnDemand]: 288/307 looper letters, 89 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2023-08-25 03:59:53,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 117 transitions, 486 flow [2023-08-25 03:59:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-25 03:59:53,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450597176981542 [2023-08-25 03:59:53,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-25 03:59:53,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-25 03:59:53,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:53,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-25 03:59:53,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,082 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 166 flow. Second operand 3 states and 502 transitions. [2023-08-25 03:59:53,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 117 transitions, 486 flow [2023-08-25 03:59:53,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 117 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 03:59:53,088 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 286 flow [2023-08-25 03:59:53,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2023-08-25 03:59:53,092 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2023-08-25 03:59:53,092 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 286 flow [2023-08-25 03:59:53,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:53,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:59:53,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 03:59:53,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:59:53,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1242204922, now seen corresponding path program 1 times [2023-08-25 03:59:53,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:53,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467447451] [2023-08-25 03:59:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:53,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467447451] [2023-08-25 03:59:53,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467447451] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 03:59:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553519466] [2023-08-25 03:59:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:53,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:59:53,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:59:53,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:59:53,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 03:59:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:53,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 03:59:53,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:59:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:53,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:59:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:53,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553519466] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:59:53,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 03:59:53,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-25 03:59:53,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159727335] [2023-08-25 03:59:53,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 03:59:53,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 03:59:53,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:53,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 03:59:53,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 03:59:53,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 307 [2023-08-25 03:59:53,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:53,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 307 [2023-08-25 03:59:53,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:53,662 INFO L124 PetriNetUnfolderBase]: 943/2156 cut-off events. [2023-08-25 03:59:53,662 INFO L125 PetriNetUnfolderBase]: For 1189/1231 co-relation queries the response was YES. [2023-08-25 03:59:53,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4995 conditions, 2156 events. 943/2156 cut-off events. For 1189/1231 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14715 event pairs, 203 based on Foata normal form. 225/2282 useless extension candidates. Maximal degree in co-relation 1439. Up to 1103 conditions per place. [2023-08-25 03:59:53,674 INFO L140 encePairwiseOnDemand]: 304/307 looper letters, 61 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-08-25 03:59:53,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 458 flow [2023-08-25 03:59:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 03:59:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 03:59:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2023-08-25 03:59:53,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5309446254071661 [2023-08-25 03:59:53,678 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2023-08-25 03:59:53,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2023-08-25 03:59:53,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:53,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2023-08-25 03:59:53,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,684 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 286 flow. Second operand 5 states and 815 transitions. [2023-08-25 03:59:53,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 458 flow [2023-08-25 03:59:53,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 420 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 03:59:53,691 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 210 flow [2023-08-25 03:59:53,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, 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} [2023-08-25 03:59:53,692 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-08-25 03:59:53,693 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 210 flow [2023-08-25 03:59:53,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:53,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:53,694 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 03:59:53,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 03:59:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:59:53,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:59:53,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash -673768419, now seen corresponding path program 1 times [2023-08-25 03:59:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674835022] [2023-08-25 03:59:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:53,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:59:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:53,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:59:53,926 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:59:53,926 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-25 03:59:53,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-25 03:59:53,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-25 03:59:53,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (12 of 16 remaining) [2023-08-25 03:59:53,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-25 03:59:53,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-25 03:59:53,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-25 03:59:53,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-25 03:59:53,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-25 03:59:53,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-25 03:59:53,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-25 03:59:53,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-25 03:59:53,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-25 03:59:53,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-25 03:59:53,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-25 03:59:53,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-25 03:59:53,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 03:59:53,928 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 03:59:53,929 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:59:53,929 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 03:59:53,951 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 03:59:53,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 490 flow [2023-08-25 03:59:54,008 INFO L124 PetriNetUnfolderBase]: 54/487 cut-off events. [2023-08-25 03:59:54,008 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 03:59:54,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 487 events. 54/487 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1968 event pairs, 1 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2023-08-25 03:59:54,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 230 transitions, 490 flow [2023-08-25 03:59:54,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 230 transitions, 490 flow [2023-08-25 03:59:54,018 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:54,018 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 230 transitions, 490 flow [2023-08-25 03:59:54,018 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 230 transitions, 490 flow [2023-08-25 03:59:54,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 490 flow [2023-08-25 03:59:54,068 INFO L124 PetriNetUnfolderBase]: 54/487 cut-off events. [2023-08-25 03:59:54,069 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 03:59:54,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 487 events. 54/487 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1968 event pairs, 1 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2023-08-25 03:59:54,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 30084 [2023-08-25 03:59:56,764 INFO L134 LiptonReduction]: Checked pairs total: 106377 [2023-08-25 03:59:56,764 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-25 03:59:56,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:56,767 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;@28800c34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:56,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 03:59:56,769 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:56,769 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-25 03:59:56,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:56,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:56,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:56,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:59:56,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash 39428846, now seen corresponding path program 1 times [2023-08-25 03:59:56,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:56,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082003257] [2023-08-25 03:59:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:56,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:56,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:56,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082003257] [2023-08-25 03:59:56,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082003257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:56,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:56,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:56,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115380497] [2023-08-25 03:59:56,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:56,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:56,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:56,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:56,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:56,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 370 [2023-08-25 03:59:56,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:56,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:56,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 370 [2023-08-25 03:59:56,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:01,776 INFO L124 PetriNetUnfolderBase]: 43367/72434 cut-off events. [2023-08-25 04:00:01,776 INFO L125 PetriNetUnfolderBase]: For 1359/1359 co-relation queries the response was YES. [2023-08-25 04:00:01,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134104 conditions, 72434 events. 43367/72434 cut-off events. For 1359/1359 co-relation queries the response was YES. Maximal size of possible extension queue 1977. Compared 658443 event pairs, 41684 based on Foata normal form. 8946/71640 useless extension candidates. Maximal degree in co-relation 55964. Up to 60642 conditions per place. [2023-08-25 04:00:02,216 INFO L140 encePairwiseOnDemand]: 345/370 looper letters, 58 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-25 04:00:02,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 106 transitions, 362 flow [2023-08-25 04:00:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:00:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:00:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-08-25 04:00:02,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963963963963964 [2023-08-25 04:00:02,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-08-25 04:00:02,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-08-25 04:00:02,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:00:02,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-08-25 04:00:02,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:02,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:02,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:02,231 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 262 flow. Second operand 3 states and 662 transitions. [2023-08-25 04:00:02,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 106 transitions, 362 flow [2023-08-25 04:00:02,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 106 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:00:02,238 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 230 flow [2023-08-25 04:00:02,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2023-08-25 04:00:02,240 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2023-08-25 04:00:02,240 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 230 flow [2023-08-25 04:00:02,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:02,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:00:02,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:00:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 04:00:02,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:00:02,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:00:02,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2143393107, now seen corresponding path program 1 times [2023-08-25 04:00:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:00:02,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035168217] [2023-08-25 04:00:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:00:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:00:02,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:00:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035168217] [2023-08-25 04:00:02,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035168217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:00:02,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:00:02,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:00:02,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650867145] [2023-08-25 04:00:02,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:00:02,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:00:02,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:00:02,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:00:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:00:02,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-25 04:00:02,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:02,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:00:02,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-25 04:00:02,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:43,194 INFO L124 PetriNetUnfolderBase]: 469001/689961 cut-off events. [2023-08-25 04:00:43,194 INFO L125 PetriNetUnfolderBase]: For 28435/28435 co-relation queries the response was YES. [2023-08-25 04:00:44,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369468 conditions, 689961 events. 469001/689961 cut-off events. For 28435/28435 co-relation queries the response was YES. Maximal size of possible extension queue 11643. Compared 6201271 event pairs, 193180 based on Foata normal form. 0/554858 useless extension candidates. Maximal degree in co-relation 1369351. Up to 333755 conditions per place. [2023-08-25 04:00:47,401 INFO L140 encePairwiseOnDemand]: 343/370 looper letters, 125 selfloop transitions, 20 changer transitions 0/163 dead transitions. [2023-08-25 04:00:47,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 163 transitions, 684 flow [2023-08-25 04:00:47,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:00:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:00:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2023-08-25 04:00:47,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2023-08-25 04:00:47,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2023-08-25 04:00:47,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2023-08-25 04:00:47,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:00:47,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2023-08-25 04:00:47,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:47,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:47,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:47,411 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 230 flow. Second operand 3 states and 630 transitions. [2023-08-25 04:00:47,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 163 transitions, 684 flow [2023-08-25 04:00:47,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:00:47,441 INFO L231 Difference]: Finished difference. Result has 104 places, 115 transitions, 402 flow [2023-08-25 04:00:47,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=104, PETRI_TRANSITIONS=115} [2023-08-25 04:00:47,442 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2023-08-25 04:00:47,442 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 115 transitions, 402 flow [2023-08-25 04:00:47,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:47,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:00:47,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:00:47,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 04:00:47,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:00:47,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:00:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash 804933946, now seen corresponding path program 1 times [2023-08-25 04:00:47,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:00:47,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622428125] [2023-08-25 04:00:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:47,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:00:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:00:47,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:00:47,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622428125] [2023-08-25 04:00:47,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622428125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:00:47,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134336708] [2023-08-25 04:00:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:47,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:00:47,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:00:47,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:00:47,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 04:00:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:47,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:00:47,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:00:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:00:47,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:00:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:00:47,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134336708] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:00:47,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:00:47,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 04:00:47,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742734370] [2023-08-25 04:00:47,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:00:47,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 04:00:47,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:00:47,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 04:00:47,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 04:00:47,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 370 [2023-08-25 04:00:47,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 115 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 193.28571428571428) internal successors, (1353), 7 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:47,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:00:47,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 370 [2023-08-25 04:00:47,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:51,347 INFO L124 PetriNetUnfolderBase]: 30839/55736 cut-off events. [2023-08-25 04:00:51,348 INFO L125 PetriNetUnfolderBase]: For 33931/35270 co-relation queries the response was YES. [2023-08-25 04:00:51,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132496 conditions, 55736 events. 30839/55736 cut-off events. For 33931/35270 co-relation queries the response was YES. Maximal size of possible extension queue 1677. Compared 538747 event pairs, 5326 based on Foata normal form. 4692/57070 useless extension candidates. Maximal degree in co-relation 7122. Up to 29179 conditions per place. [2023-08-25 04:00:51,981 INFO L140 encePairwiseOnDemand]: 367/370 looper letters, 111 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2023-08-25 04:00:51,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 783 flow [2023-08-25 04:00:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:00:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:00:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1250 transitions. [2023-08-25 04:00:51,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630630630630631 [2023-08-25 04:00:51,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1250 transitions. [2023-08-25 04:00:51,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1250 transitions. [2023-08-25 04:00:51,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:00:51,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1250 transitions. [2023-08-25 04:00:51,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.33333333333334) internal successors, (1250), 6 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:51,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:51,992 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:51,993 INFO L175 Difference]: Start difference. First operand has 104 places, 115 transitions, 402 flow. Second operand 6 states and 1250 transitions. [2023-08-25 04:00:51,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 783 flow [2023-08-25 04:00:52,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 169 transitions, 717 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 04:00:52,050 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 309 flow [2023-08-25 04:00:52,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, 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} [2023-08-25 04:00:52,051 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -6 predicate places. [2023-08-25 04:00:52,051 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 309 flow [2023-08-25 04:00:52,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.28571428571428) internal successors, (1353), 7 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:52,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:00:52,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:00:52,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 04:00:52,257 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 [2023-08-25 04:00:52,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:00:52,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:00:52,258 INFO L85 PathProgramCache]: Analyzing trace with hash -242512390, now seen corresponding path program 1 times [2023-08-25 04:00:52,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:00:52,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018871414] [2023-08-25 04:00:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:00:52,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:00:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:00:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:00:52,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:00:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018871414] [2023-08-25 04:00:52,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018871414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:00:52,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:00:52,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:00:52,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390767461] [2023-08-25 04:00:52,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:00:52,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:00:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:00:52,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:00:52,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:00:52,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 370 [2023-08-25 04:00:52,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:00:52,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:00:52,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 370 [2023-08-25 04:00:52,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:59,537 INFO L124 PetriNetUnfolderBase]: 84761/124650 cut-off events. [2023-08-25 04:00:59,537 INFO L125 PetriNetUnfolderBase]: For 57814/58454 co-relation queries the response was YES. [2023-08-25 04:00:59,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308975 conditions, 124650 events. 84761/124650 cut-off events. For 57814/58454 co-relation queries the response was YES. Maximal size of possible extension queue 2637. Compared 947300 event pairs, 58909 based on Foata normal form. 0/107944 useless extension candidates. Maximal degree in co-relation 186279. Up to 107434 conditions per place. [2023-08-25 04:01:00,595 INFO L140 encePairwiseOnDemand]: 358/370 looper letters, 119 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2023-08-25 04:01:00,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 155 transitions, 781 flow [2023-08-25 04:01:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:01:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:01:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-08-25 04:01:00,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2023-08-25 04:01:00,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-08-25 04:01:00,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-08-25 04:01:00,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:01:00,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-08-25 04:01:00,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:00,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:00,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:00,602 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 309 flow. Second operand 3 states and 580 transitions. [2023-08-25 04:01:00,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 155 transitions, 781 flow [2023-08-25 04:01:00,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 155 transitions, 766 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-25 04:01:00,646 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 486 flow [2023-08-25 04:01:00,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, 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=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2023-08-25 04:01:00,647 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2023-08-25 04:01:00,647 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 486 flow [2023-08-25 04:01:00,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:00,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:00,647 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 04:01:00,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 04:01:00,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:01:00,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash -793348375, now seen corresponding path program 1 times [2023-08-25 04:01:00,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:00,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356931503] [2023-08-25 04:01:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:01:00,669 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:01:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:01:00,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:01:00,692 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:01:00,692 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 04:01:00,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 04:01:00,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 04:01:00,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (16 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-25 04:01:00,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 04:01:00,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 04:01:00,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 04:01:00,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 04:01:00,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 04:01:00,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-25 04:01:00,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 04:01:00,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 04:01:00,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 04:01:00,694 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-25 04:01:00,695 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:01:00,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 04:01:00,727 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 04:01:00,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 278 transitions, 600 flow [2023-08-25 04:01:00,813 INFO L124 PetriNetUnfolderBase]: 86/753 cut-off events. [2023-08-25 04:01:00,814 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 04:01:00,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 753 events. 86/753 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3384 event pairs, 6 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 507. Up to 32 conditions per place. [2023-08-25 04:01:00,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 278 transitions, 600 flow [2023-08-25 04:01:00,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 278 transitions, 600 flow [2023-08-25 04:01:00,831 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:01:00,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 278 transitions, 600 flow [2023-08-25 04:01:00,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 278 transitions, 600 flow [2023-08-25 04:01:00,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 278 transitions, 600 flow [2023-08-25 04:01:00,895 INFO L124 PetriNetUnfolderBase]: 86/753 cut-off events. [2023-08-25 04:01:00,896 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 04:01:00,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 753 events. 86/753 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3384 event pairs, 6 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 507. Up to 32 conditions per place. [2023-08-25 04:01:00,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 49128 [2023-08-25 04:01:03,569 INFO L134 LiptonReduction]: Checked pairs total: 202498 [2023-08-25 04:01:03,570 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-25 04:01:03,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:01:03,571 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;@28800c34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:01:03,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-25 04:01:03,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:01:03,573 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-25 04:01:03,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:01:03,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:03,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 04:01:03,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 04:01:03,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:03,574 INFO L85 PathProgramCache]: Analyzing trace with hash 54509841, now seen corresponding path program 1 times [2023-08-25 04:01:03,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:03,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431938671] [2023-08-25 04:01:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:03,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:01:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431938671] [2023-08-25 04:01:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431938671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:01:03,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:01:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:01:03,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472075428] [2023-08-25 04:01:03,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:01:03,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:01:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:03,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:01:03,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:01:03,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 442 [2023-08-25 04:01:03,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 149 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:03,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:03,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 442 [2023-08-25 04:01:03,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:02:27,543 INFO L124 PetriNetUnfolderBase]: 667680/980760 cut-off events. [2023-08-25 04:02:27,544 INFO L125 PetriNetUnfolderBase]: For 25615/25615 co-relation queries the response was YES. [2023-08-25 04:02:32,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1860069 conditions, 980760 events. 667680/980760 cut-off events. For 25615/25615 co-relation queries the response was YES. Maximal size of possible extension queue 20018. Compared 9575420 event pairs, 631204 based on Foata normal form. 184217/1059997 useless extension candidates. Maximal degree in co-relation 499836. Up to 864805 conditions per place. [2023-08-25 04:02:37,923 INFO L140 encePairwiseOnDemand]: 410/442 looper letters, 70 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-25 04:02:37,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 131 transitions, 450 flow [2023-08-25 04:02:37,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:02:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:02:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2023-08-25 04:02:37,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6040723981900452 [2023-08-25 04:02:37,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2023-08-25 04:02:37,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2023-08-25 04:02:37,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:02:37,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2023-08-25 04:02:37,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:37,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:37,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:37,961 INFO L175 Difference]: Start difference. First operand has 126 places, 149 transitions, 342 flow. Second operand 3 states and 801 transitions. [2023-08-25 04:02:37,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 131 transitions, 450 flow [2023-08-25 04:02:37,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:02:37,975 INFO L231 Difference]: Finished difference. Result has 127 places, 120 transitions, 294 flow [2023-08-25 04:02:37,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=127, PETRI_TRANSITIONS=120} [2023-08-25 04:02:37,992 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 1 predicate places. [2023-08-25 04:02:37,992 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 120 transitions, 294 flow [2023-08-25 04:02:37,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:37,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:37,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:02:37,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 04:02:37,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 04:02:37,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:37,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1947436937, now seen corresponding path program 1 times [2023-08-25 04:02:37,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:37,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061492892] [2023-08-25 04:02:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:37,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:02:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:02:38,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:02:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061492892] [2023-08-25 04:02:38,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061492892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:02:38,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:02:38,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:02:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226157645] [2023-08-25 04:02:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:02:38,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:02:38,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:02:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:02:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:02:38,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 442 [2023-08-25 04:02:38,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 120 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:38,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:02:38,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 442 [2023-08-25 04:02:38,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand