/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_21-deref_read_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:04:34,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:04:34,328 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 04:04:34,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:04:34,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:04:34,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:04:34,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:04:34,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:04:34,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:04:34,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:04:34,368 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:04:34,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:04:34,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:04:34,369 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:04:34,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:04:34,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:04:34,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:04:34,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:04:34,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:04:34,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:04:34,370 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:04:34,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:04:34,377 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:04:34,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:04:34,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:04:34,378 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:04:34,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:04:34,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:04:34,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:04:34,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:04:34,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:04:34,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:04:34,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:04:34,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:04:34,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:04:34,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:04:34,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:04:34,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:04:34,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:04:34,658 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:04:34,658 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:04:34,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-25 04:04:35,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:04:35,795 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:04:35,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-25 04:04:35,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2dbc23fe/c0882208edad4c58aece018c5b67d64c/FLAG398028281 [2023-08-25 04:04:35,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2dbc23fe/c0882208edad4c58aece018c5b67d64c [2023-08-25 04:04:35,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:04:35,825 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:04:35,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:04:35,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:04:35,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:04:35,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:04:35" (1/1) ... [2023-08-25 04:04:35,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b448eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:35, skipping insertion in model container [2023-08-25 04:04:35,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:04:35" (1/1) ... [2023-08-25 04:04:35,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:04:36,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:04:36,124 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:04:36,141 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:04:36,143 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:04:36,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:04:36,184 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:04:36,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36 WrapperNode [2023-08-25 04:04:36,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:04:36,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:04:36,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:04:36,186 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:04:36,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,239 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-08-25 04:04:36,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:04:36,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:04:36,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:04:36,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:04:36,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:04:36,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:04:36,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:04:36,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:04:36,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (1/1) ... [2023-08-25 04:04:36,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:04:36,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:04:36,304 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 04:04:36,310 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 04:04:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:04:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:04:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:04:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:04:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:04:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 04:04:36,336 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 04:04:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:04:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:04:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:04:36,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:04:36,337 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 04:04:36,460 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:04:36,461 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:04:36,679 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:04:36,684 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:04:36,685 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-25 04:04:36,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:04:36 BoogieIcfgContainer [2023-08-25 04:04:36,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:04:36,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:04:36,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:04:36,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:04:36,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:04:35" (1/3) ... [2023-08-25 04:04:36,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbb4c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:04:36, skipping insertion in model container [2023-08-25 04:04:36,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:04:36" (2/3) ... [2023-08-25 04:04:36,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbb4c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:04:36, skipping insertion in model container [2023-08-25 04:04:36,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:04:36" (3/3) ... [2023-08-25 04:04:36,692 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-08-25 04:04:36,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:04:36,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-25 04:04:36,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:04:36,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 04:04:36,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 153 transitions, 311 flow [2023-08-25 04:04:36,889 INFO L124 PetriNetUnfolderBase]: 16/203 cut-off events. [2023-08-25 04:04:36,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:36,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 16/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 565 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-08-25 04:04:36,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 153 transitions, 311 flow [2023-08-25 04:04:36,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 153 transitions, 311 flow [2023-08-25 04:04:36,910 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:04:36,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 153 transitions, 311 flow [2023-08-25 04:04:36,920 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 153 transitions, 311 flow [2023-08-25 04:04:36,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 153 transitions, 311 flow [2023-08-25 04:04:36,953 INFO L124 PetriNetUnfolderBase]: 16/203 cut-off events. [2023-08-25 04:04:36,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:36,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 16/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 565 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-08-25 04:04:36,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 7392 [2023-08-25 04:04:39,353 INFO L134 LiptonReduction]: Checked pairs total: 27745 [2023-08-25 04:04:39,354 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-25 04:04:39,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:04:39,370 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;@67f0c56b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:04:39,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-25 04:04:39,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:04:39,374 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-25 04:04:39,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:39,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:39,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-25 04:04:39,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 04:04:39,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash 17881, now seen corresponding path program 1 times [2023-08-25 04:04:39,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:39,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216313528] [2023-08-25 04:04:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:39,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:39,514 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 04:04:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:39,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216313528] [2023-08-25 04:04:39,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216313528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:39,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:39,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 04:04:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248184500] [2023-08-25 04:04:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:39,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:04:39,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:04:39,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:04:39,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 262 [2023-08-25 04:04:39,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 143 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:39,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 262 [2023-08-25 04:04:39,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:39,625 INFO L124 PetriNetUnfolderBase]: 108/472 cut-off events. [2023-08-25 04:04:39,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:39,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 472 events. 108/472 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2372 event pairs, 108 based on Foata normal form. 10/434 useless extension candidates. Maximal degree in co-relation 689. Up to 248 conditions per place. [2023-08-25 04:04:39,630 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 23 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-08-25 04:04:39,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 169 flow [2023-08-25 04:04:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:04:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:04:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 313 transitions. [2023-08-25 04:04:39,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5973282442748091 [2023-08-25 04:04:39,645 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 313 transitions. [2023-08-25 04:04:39,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 313 transitions. [2023-08-25 04:04:39,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:39,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 313 transitions. [2023-08-25 04:04:39,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,657 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,658 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 143 flow. Second operand 2 states and 313 transitions. [2023-08-25 04:04:39,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 169 flow [2023-08-25 04:04:39,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:39,661 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 123 flow [2023-08-25 04:04:39,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=123, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-08-25 04:04:39,666 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2023-08-25 04:04:39,666 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 123 flow [2023-08-25 04:04:39,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:39,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 04:04:39,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:04:39,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 04:04:39,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash 553986, now seen corresponding path program 1 times [2023-08-25 04:04:39,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296421752] [2023-08-25 04:04:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:04:39,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296421752] [2023-08-25 04:04:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296421752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:39,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:04:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234240043] [2023-08-25 04:04:39,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:39,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:04:39,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 262 [2023-08-25 04:04:39,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:39,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 262 [2023-08-25 04:04:39,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:39,808 INFO L124 PetriNetUnfolderBase]: 108/485 cut-off events. [2023-08-25 04:04:39,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:39,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 485 events. 108/485 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2423 event pairs, 88 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 729. Up to 226 conditions per place. [2023-08-25 04:04:39,812 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 34 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-25 04:04:39,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 221 flow [2023-08-25 04:04:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:04:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:04:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-08-25 04:04:39,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508905852417303 [2023-08-25 04:04:39,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-08-25 04:04:39,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-08-25 04:04:39,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:39,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-08-25 04:04:39,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,823 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 123 flow. Second operand 3 states and 433 transitions. [2023-08-25 04:04:39,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 221 flow [2023-08-25 04:04:39,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:39,825 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 131 flow [2023-08-25 04:04:39,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-25 04:04:39,826 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2023-08-25 04:04:39,826 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 131 flow [2023-08-25 04:04:39,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:39,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:39,827 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 04:04:39,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 04:04:39,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 04:04:39,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:39,830 INFO L85 PathProgramCache]: Analyzing trace with hash -675536531, now seen corresponding path program 1 times [2023-08-25 04:04:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:39,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684374163] [2023-08-25 04:04:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:39,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:04:39,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:04:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:04:39,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:04:39,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:04:39,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-25 04:04:39,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-08-25 04:04:39,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-08-25 04:04:39,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-08-25 04:04:39,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-08-25 04:04:39,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (12 of 18 remaining) [2023-08-25 04:04:39,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-08-25 04:04:39,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-08-25 04:04:39,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-08-25 04:04:39,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-08-25 04:04:39,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-08-25 04:04:39,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-08-25 04:04:39,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-08-25 04:04:39,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-08-25 04:04:39,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-08-25 04:04:39,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-08-25 04:04:39,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-08-25 04:04:39,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-08-25 04:04:39,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 04:04:39,927 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-25 04:04:39,929 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:04:39,929 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:04:39,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 04:04:39,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 220 transitions, 452 flow [2023-08-25 04:04:39,993 INFO L124 PetriNetUnfolderBase]: 27/325 cut-off events. [2023-08-25 04:04:39,993 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 04:04:39,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 325 events. 27/325 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1225 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 204. Up to 6 conditions per place. [2023-08-25 04:04:39,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 220 transitions, 452 flow [2023-08-25 04:04:39,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 220 transitions, 452 flow [2023-08-25 04:04:39,997 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:04:39,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 220 transitions, 452 flow [2023-08-25 04:04:39,997 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 220 transitions, 452 flow [2023-08-25 04:04:39,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 220 transitions, 452 flow [2023-08-25 04:04:40,025 INFO L124 PetriNetUnfolderBase]: 27/325 cut-off events. [2023-08-25 04:04:40,025 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 04:04:40,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 325 events. 27/325 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1225 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 204. Up to 6 conditions per place. [2023-08-25 04:04:40,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 23628 [2023-08-25 04:04:42,547 INFO L134 LiptonReduction]: Checked pairs total: 109880 [2023-08-25 04:04:42,547 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-25 04:04:42,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:04:42,549 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;@67f0c56b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:04:42,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-25 04:04:42,550 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:04:42,550 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-25 04:04:42,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:42,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:42,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-25 04:04:42,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 04:04:42,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:42,551 INFO L85 PathProgramCache]: Analyzing trace with hash 31225, now seen corresponding path program 1 times [2023-08-25 04:04:42,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:42,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653766381] [2023-08-25 04:04:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:42,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:42,583 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 04:04:42,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:42,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653766381] [2023-08-25 04:04:42,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653766381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:42,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:42,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 04:04:42,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389439728] [2023-08-25 04:04:42,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:42,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:04:42,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:42,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:04:42,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:04:42,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 350 [2023-08-25 04:04:42,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 118 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:42,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:42,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 350 [2023-08-25 04:04:42,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:43,218 INFO L124 PetriNetUnfolderBase]: 3072/8337 cut-off events. [2023-08-25 04:04:43,218 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-25 04:04:43,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13291 conditions, 8337 events. 3072/8337 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 76704 event pairs, 3072 based on Foata normal form. 679/8181 useless extension candidates. Maximal degree in co-relation 9386. Up to 4902 conditions per place. [2023-08-25 04:04:43,255 INFO L140 encePairwiseOnDemand]: 334/350 looper letters, 36 selfloop transitions, 0 changer transitions 0/102 dead transitions. [2023-08-25 04:04:43,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 288 flow [2023-08-25 04:04:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:04:43,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:04:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 452 transitions. [2023-08-25 04:04:43,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2023-08-25 04:04:43,256 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 452 transitions. [2023-08-25 04:04:43,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 452 transitions. [2023-08-25 04:04:43,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:43,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 452 transitions. [2023-08-25 04:04:43,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:43,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 04:04:43,259 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 04:04:43,259 INFO L175 Difference]: Start difference. First operand has 109 places, 118 transitions, 248 flow. Second operand 2 states and 452 transitions. [2023-08-25 04:04:43,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 288 flow [2023-08-25 04:04:43,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 286 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:43,262 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 214 flow [2023-08-25 04:04:43,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=214, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2023-08-25 04:04:43,264 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -1 predicate places. [2023-08-25 04:04:43,265 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 214 flow [2023-08-25 04:04:43,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:43,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:43,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 04:04:43,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 04:04:43,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 04:04:43,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash 968010, now seen corresponding path program 1 times [2023-08-25 04:04:43,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:43,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150209391] [2023-08-25 04:04:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:43,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:43,299 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 04:04:43,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:43,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150209391] [2023-08-25 04:04:43,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150209391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:43,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:43,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:04:43,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990883244] [2023-08-25 04:04:43,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:43,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:43,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:04:43,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 350 [2023-08-25 04:04:43,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:43,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:43,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 350 [2023-08-25 04:04:43,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:43,829 INFO L124 PetriNetUnfolderBase]: 3072/8179 cut-off events. [2023-08-25 04:04:43,829 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-25 04:04:43,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13123 conditions, 8179 events. 3072/8179 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 74762 event pairs, 2922 based on Foata normal form. 0/7372 useless extension candidates. Maximal degree in co-relation 13118. Up to 4880 conditions per place. [2023-08-25 04:04:43,863 INFO L140 encePairwiseOnDemand]: 347/350 looper letters, 48 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-08-25 04:04:43,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 342 flow [2023-08-25 04:04:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:04:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:04:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-25 04:04:43,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5971428571428572 [2023-08-25 04:04:43,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-25 04:04:43,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-25 04:04:43,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:43,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-25 04:04:43,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:43,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 04:04:43,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 04:04:43,868 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 214 flow. Second operand 3 states and 627 transitions. [2023-08-25 04:04:43,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 342 flow [2023-08-25 04:04:43,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:43,871 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 226 flow [2023-08-25 04:04:43,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2023-08-25 04:04:43,873 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 2 predicate places. [2023-08-25 04:04:43,873 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 226 flow [2023-08-25 04:04:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:43,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:43,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:04:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 04:04:43,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 04:04:43,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash 820211959, now seen corresponding path program 1 times [2023-08-25 04:04:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311155095] [2023-08-25 04:04:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:43,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:04:43,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311155095] [2023-08-25 04:04:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311155095] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:04:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918398908] [2023-08-25 04:04:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:43,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:04:43,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:04:43,923 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 04:04:43,924 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 04:04:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:44,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:04:44,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:04:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:04:44,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:04:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918398908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:44,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:04:44,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-25 04:04:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264639795] [2023-08-25 04:04:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:04:44,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 350 [2023-08-25 04:04:44,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:44,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:44,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 350 [2023-08-25 04:04:44,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:44,659 INFO L124 PetriNetUnfolderBase]: 4391/10789 cut-off events. [2023-08-25 04:04:44,659 INFO L125 PetriNetUnfolderBase]: For 550/550 co-relation queries the response was YES. [2023-08-25 04:04:44,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18314 conditions, 10789 events. 4391/10789 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 96811 event pairs, 3152 based on Foata normal form. 0/10249 useless extension candidates. Maximal degree in co-relation 18307. Up to 6898 conditions per place. [2023-08-25 04:04:44,690 INFO L140 encePairwiseOnDemand]: 342/350 looper letters, 49 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-25 04:04:44,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 352 flow [2023-08-25 04:04:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:04:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:04:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-25 04:04:44,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2023-08-25 04:04:44,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-25 04:04:44,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-25 04:04:44,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:44,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-25 04:04:44,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:44,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 04:04:44,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 04:04:44,695 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 226 flow. Second operand 3 states and 610 transitions. [2023-08-25 04:04:44,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 352 flow [2023-08-25 04:04:44,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 108 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:04:44,697 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 237 flow [2023-08-25 04:04:44,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2023-08-25 04:04:44,698 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -1 predicate places. [2023-08-25 04:04:44,698 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 237 flow [2023-08-25 04:04:44,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:44,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:44,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 04:04:44,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 04:04:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-25 04:04:44,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 04:04:44,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1258198627, now seen corresponding path program 1 times [2023-08-25 04:04:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:44,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713914239] [2023-08-25 04:04:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:44,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:04:44,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:04:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:04:44,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:04:44,928 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (18 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-25 04:04:44,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-25 04:04:44,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-25 04:04:44,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-25 04:04:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 04:04:44,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 04:04:44,931 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:04:44,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 04:04:44,957 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 04:04:44,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 287 transitions, 595 flow [2023-08-25 04:04:44,994 INFO L124 PetriNetUnfolderBase]: 38/447 cut-off events. [2023-08-25 04:04:44,995 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 04:04:44,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 447 events. 38/447 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1902 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2023-08-25 04:04:44,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 287 transitions, 595 flow [2023-08-25 04:04:45,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 287 transitions, 595 flow [2023-08-25 04:04:45,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:04:45,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 287 transitions, 595 flow [2023-08-25 04:04:45,000 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 287 transitions, 595 flow [2023-08-25 04:04:45,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 287 transitions, 595 flow [2023-08-25 04:04:45,034 INFO L124 PetriNetUnfolderBase]: 38/447 cut-off events. [2023-08-25 04:04:45,034 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 04:04:45,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 447 events. 38/447 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1902 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2023-08-25 04:04:45,049 INFO L119 LiptonReduction]: Number of co-enabled transitions 48708 [2023-08-25 04:04:47,700 INFO L134 LiptonReduction]: Checked pairs total: 248892 [2023-08-25 04:04:47,700 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-25 04:04:47,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:04:47,702 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;@67f0c56b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:04:47,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-25 04:04:47,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:04:47,703 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-25 04:04:47,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:04:47,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:47,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-25 04:04:47,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 04:04:47,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash 47448, now seen corresponding path program 1 times [2023-08-25 04:04:47,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:47,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064110357] [2023-08-25 04:04:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:47,712 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 04:04:47,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064110357] [2023-08-25 04:04:47,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064110357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:47,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:47,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 04:04:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774063476] [2023-08-25 04:04:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:47,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:04:47,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:47,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:04:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:04:47,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 440 [2023-08-25 04:04:47,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 166 transitions, 353 flow. Second operand has 2 states, 2 states have (on average 261.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:47,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:47,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 440 [2023-08-25 04:04:47,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:04:57,430 INFO L124 PetriNetUnfolderBase]: 61884/126473 cut-off events. [2023-08-25 04:04:57,431 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2023-08-25 04:04:57,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212926 conditions, 126473 events. 61884/126473 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 2752. Compared 1454338 event pairs, 61884 based on Foata normal form. 8859/123581 useless extension candidates. Maximal degree in co-relation 114267. Up to 85684 conditions per place. [2023-08-25 04:04:58,284 INFO L140 encePairwiseOnDemand]: 418/440 looper letters, 49 selfloop transitions, 0 changer transitions 0/144 dead transitions. [2023-08-25 04:04:58,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 407 flow [2023-08-25 04:04:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:04:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:04:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 591 transitions. [2023-08-25 04:04:58,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6715909090909091 [2023-08-25 04:04:58,287 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 591 transitions. [2023-08-25 04:04:58,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 591 transitions. [2023-08-25 04:04:58,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:04:58,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 591 transitions. [2023-08-25 04:04:58,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 295.5) internal successors, (591), 2 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:58,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 04:04:58,290 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 04:04:58,290 INFO L175 Difference]: Start difference. First operand has 153 places, 166 transitions, 353 flow. Second operand 2 states and 591 transitions. [2023-08-25 04:04:58,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 407 flow [2023-08-25 04:04:58,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 401 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-25 04:04:58,295 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 303 flow [2023-08-25 04:04:58,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=303, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2023-08-25 04:04:58,296 INFO L281 CegarLoopForPetriNet]: 153 programPoint places, -1 predicate places. [2023-08-25 04:04:58,297 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 303 flow [2023-08-25 04:04:58,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:58,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:04:58,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-25 04:04:58,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 04:04:58,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 04:04:58,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:04:58,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1471309, now seen corresponding path program 1 times [2023-08-25 04:04:58,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:04:58,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431926969] [2023-08-25 04:04:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:04:58,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:04:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:04:58,324 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 04:04:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:04:58,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431926969] [2023-08-25 04:04:58,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431926969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:04:58,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:04:58,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:04:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279326496] [2023-08-25 04:04:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:04:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:04:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:04:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:04:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:04:58,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 440 [2023-08-25 04:04:58,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:04:58,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:04:58,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 440 [2023-08-25 04:04:58,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:05:07,992 INFO L124 PetriNetUnfolderBase]: 61884/126677 cut-off events. [2023-08-25 04:05:07,992 INFO L125 PetriNetUnfolderBase]: For 530/530 co-relation queries the response was YES. [2023-08-25 04:05:08,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212923 conditions, 126677 events. 61884/126677 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 2745. Compared 1459331 event pairs, 60044 based on Foata normal form. 0/114849 useless extension candidates. Maximal degree in co-relation 212917. Up to 85662 conditions per place. [2023-08-25 04:05:08,658 INFO L140 encePairwiseOnDemand]: 437/440 looper letters, 61 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-08-25 04:05:08,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 158 transitions, 457 flow [2023-08-25 04:05:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:05:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:05:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-08-25 04:05:08,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2023-08-25 04:05:08,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-08-25 04:05:08,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-08-25 04:05:08,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:05:08,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-08-25 04:05:08,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:08,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:08,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:08,665 INFO L175 Difference]: Start difference. First operand has 152 places, 144 transitions, 303 flow. Second operand 3 states and 820 transitions. [2023-08-25 04:05:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 158 transitions, 457 flow [2023-08-25 04:05:08,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 158 transitions, 457 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:05:08,667 INFO L231 Difference]: Finished difference. Result has 155 places, 145 transitions, 315 flow [2023-08-25 04:05:08,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=155, PETRI_TRANSITIONS=145} [2023-08-25 04:05:08,668 INFO L281 CegarLoopForPetriNet]: 153 programPoint places, 2 predicate places. [2023-08-25 04:05:08,668 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 145 transitions, 315 flow [2023-08-25 04:05:08,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:08,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:05:08,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:05:08,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 04:05:08,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 04:05:08,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:05:08,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1873449375, now seen corresponding path program 1 times [2023-08-25 04:05:08,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:05:08,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061406369] [2023-08-25 04:05:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:05:08,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:05:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:05:08,692 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 04:05:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:05:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061406369] [2023-08-25 04:05:08,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061406369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:05:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078870620] [2023-08-25 04:05:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:05:08,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:05:08,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:05:08,694 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 04:05:08,696 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 04:05:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:05:08,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:05:08,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:05:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:05:08,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:05:08,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078870620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:05:08,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:05:08,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-25 04:05:08,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117286227] [2023-08-25 04:05:08,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:05:08,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:05:08,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:05:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:05:08,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:05:08,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 440 [2023-08-25 04:05:08,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 145 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:08,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:05:08,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 440 [2023-08-25 04:05:08,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:05:24,860 INFO L124 PetriNetUnfolderBase]: 123469/224628 cut-off events. [2023-08-25 04:05:24,860 INFO L125 PetriNetUnfolderBase]: For 10129/10129 co-relation queries the response was YES. [2023-08-25 04:05:25,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404676 conditions, 224628 events. 123469/224628 cut-off events. For 10129/10129 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 2433294 event pairs, 97429 based on Foata normal form. 0/212528 useless extension candidates. Maximal degree in co-relation 404668. Up to 169736 conditions per place. [2023-08-25 04:05:26,162 INFO L140 encePairwiseOnDemand]: 429/440 looper letters, 69 selfloop transitions, 4 changer transitions 0/151 dead transitions. [2023-08-25 04:05:26,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 490 flow [2023-08-25 04:05:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:05:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:05:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2023-08-25 04:05:26,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2023-08-25 04:05:26,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2023-08-25 04:05:26,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2023-08-25 04:05:26,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:05:26,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2023-08-25 04:05:26,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:26,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:26,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:26,169 INFO L175 Difference]: Start difference. First operand has 155 places, 145 transitions, 315 flow. Second operand 3 states and 795 transitions. [2023-08-25 04:05:26,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 490 flow [2023-08-25 04:05:26,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 151 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:05:26,172 INFO L231 Difference]: Finished difference. Result has 150 places, 142 transitions, 329 flow [2023-08-25 04:05:26,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=150, PETRI_TRANSITIONS=142} [2023-08-25 04:05:26,172 INFO L281 CegarLoopForPetriNet]: 153 programPoint places, -3 predicate places. [2023-08-25 04:05:26,173 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 142 transitions, 329 flow [2023-08-25 04:05:26,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:26,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:05:26,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:05:26,181 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 04:05:26,377 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,SelfDestructingSolverStorable9 [2023-08-25 04:05:26,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-25 04:05:26,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:05:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1873277928, now seen corresponding path program 1 times [2023-08-25 04:05:26,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:05:26,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079578718] [2023-08-25 04:05:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:05:26,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:05:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:05:26,594 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 04:05:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:05:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079578718] [2023-08-25 04:05:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079578718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:05:26,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:05:26,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 04:05:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155743393] [2023-08-25 04:05:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:05:26,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 04:05:26,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:05:26,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 04:05:26,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 04:05:26,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 440 [2023-08-25 04:05:26,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 142 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 169.83333333333334) internal successors, (1019), 6 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:05:26,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:05:26,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 440 [2023-08-25 04:05:26,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand