/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_04-munge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 03:59:04,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 03:59:05,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 03:59:05,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 03:59:05,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 03:59:05,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 03:59:05,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 03:59:05,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 03:59:05,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 03:59:05,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 03:59:05,107 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 03:59:05,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 03:59:05,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 03:59:05,109 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 03:59:05,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 03:59:05,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 03:59:05,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 03:59:05,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 03:59:05,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 03:59:05,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 03:59:05,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 03:59:05,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 03:59:05,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 03:59:05,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 03:59:05,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 03:59:05,112 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 03:59:05,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 03:59:05,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:59:05,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 03:59:05,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 03:59:05,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 03:59:05,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 03:59:05,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 03:59:05,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 03:59:05,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 03:59:05,115 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 03:59:05,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 03:59:05,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 03:59:05,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 03:59:05,496 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 03:59:05,498 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 03:59:05,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-25 03:59:06,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 03:59:06,872 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 03:59:06,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-25 03:59:06,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57caf2ec/44ab7ea0bb6543e6a093a15c7677ddfc/FLAG392bb3e71 [2023-08-25 03:59:06,907 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57caf2ec/44ab7ea0bb6543e6a093a15c7677ddfc [2023-08-25 03:59:06,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 03:59:06,913 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 03:59:06,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 03:59:06,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 03:59:06,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 03:59:06,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:59:06" (1/1) ... [2023-08-25 03:59:06,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e092cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:06, skipping insertion in model container [2023-08-25 03:59:06,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:59:06" (1/1) ... [2023-08-25 03:59:06,968 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 03:59:07,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:59:07,295 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 03:59:07,330 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:59:07,332 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:59:07,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:59:07,407 INFO L206 MainTranslator]: Completed translation [2023-08-25 03:59:07,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07 WrapperNode [2023-08-25 03:59:07,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 03:59:07,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 03:59:07,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 03:59:07,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 03:59:07,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,471 INFO L138 Inliner]: procedures = 172, calls = 38, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 250 [2023-08-25 03:59:07,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 03:59:07,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 03:59:07,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 03:59:07,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 03:59:07,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,507 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 03:59:07,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 03:59:07,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 03:59:07,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 03:59:07,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (1/1) ... [2023-08-25 03:59:07,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:59:07,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:59:07,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 03:59:07,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 03:59:07,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 03:59:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-25 03:59:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-25 03:59:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 03:59:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 03:59:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 03:59:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 03:59:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-25 03:59:07,566 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-25 03:59:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 03:59:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 03:59:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 03:59:07,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 03:59:07,568 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 03:59:07,756 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 03:59:07,757 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 03:59:08,204 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 03:59:08,210 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 03:59:08,210 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-25 03:59:08,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:59:08 BoogieIcfgContainer [2023-08-25 03:59:08,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 03:59:08,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 03:59:08,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 03:59:08,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 03:59:08,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 03:59:06" (1/3) ... [2023-08-25 03:59:08,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f26f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:59:08, skipping insertion in model container [2023-08-25 03:59:08,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:59:07" (2/3) ... [2023-08-25 03:59:08,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f26f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:59:08, skipping insertion in model container [2023-08-25 03:59:08,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:59:08" (3/3) ... [2023-08-25 03:59:08,219 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-25 03:59:08,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 03:59:08,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-25 03:59:08,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 03:59:08,327 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 03:59:08,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 262 transitions, 546 flow [2023-08-25 03:59:08,503 INFO L124 PetriNetUnfolderBase]: 61/489 cut-off events. [2023-08-25 03:59:08,503 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 03:59:08,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 489 events. 61/489 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2426 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-08-25 03:59:08,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 262 transitions, 546 flow [2023-08-25 03:59:08,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 262 transitions, 546 flow [2023-08-25 03:59:08,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:08,551 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 262 transitions, 546 flow [2023-08-25 03:59:08,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 262 transitions, 546 flow [2023-08-25 03:59:08,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 262 transitions, 546 flow [2023-08-25 03:59:08,624 INFO L124 PetriNetUnfolderBase]: 61/489 cut-off events. [2023-08-25 03:59:08,625 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 03:59:08,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 489 events. 61/489 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2426 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-08-25 03:59:08,652 INFO L119 LiptonReduction]: Number of co-enabled transitions 30954 [2023-08-25 03:59:12,910 INFO L134 LiptonReduction]: Checked pairs total: 85872 [2023-08-25 03:59:12,911 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-08-25 03:59:12,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:12,928 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;@c7d1674, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:12,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-25 03:59:12,931 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:12,932 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-25 03:59:12,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:12,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:12,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:12,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-25 03:59:12,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 31608267, now seen corresponding path program 1 times [2023-08-25 03:59:12,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:12,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770921552] [2023-08-25 03:59:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:12,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:13,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:13,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770921552] [2023-08-25 03:59:13,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770921552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:13,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:13,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:13,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658638377] [2023-08-25 03:59:13,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:13,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:13,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:13,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:13,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:13,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 447 [2023-08-25 03:59:13,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 121 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:13,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:13,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 447 [2023-08-25 03:59:13,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:14,270 INFO L124 PetriNetUnfolderBase]: 5260/10916 cut-off events. [2023-08-25 03:59:14,270 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-25 03:59:14,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19065 conditions, 10916 events. 5260/10916 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 94358 event pairs, 4263 based on Foata normal form. 1993/10368 useless extension candidates. Maximal degree in co-relation 18355. Up to 7990 conditions per place. [2023-08-25 03:59:14,335 INFO L140 encePairwiseOnDemand]: 418/447 looper letters, 69 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-25 03:59:14,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 386 flow [2023-08-25 03:59:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-08-25 03:59:14,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56972408650261 [2023-08-25 03:59:14,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-08-25 03:59:14,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-08-25 03:59:14,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:14,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-08-25 03:59:14,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:14,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:14,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:14,378 INFO L175 Difference]: Start difference. First operand has 96 places, 121 transitions, 264 flow. Second operand 3 states and 764 transitions. [2023-08-25 03:59:14,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 386 flow [2023-08-25 03:59:14,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 111 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:59:14,389 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 216 flow [2023-08-25 03:59:14,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2023-08-25 03:59:14,395 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2023-08-25 03:59:14,395 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 216 flow [2023-08-25 03:59:14,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:14,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:14,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 03:59:14,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 03:59:14,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-25 03:59:14,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash 281342830, now seen corresponding path program 1 times [2023-08-25 03:59:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:14,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318741291] [2023-08-25 03:59:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:14,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:59:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:14,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:59:14,502 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:59:14,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2023-08-25 03:59:14,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (26 of 28 remaining) [2023-08-25 03:59:14,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (25 of 28 remaining) [2023-08-25 03:59:14,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (24 of 28 remaining) [2023-08-25 03:59:14,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (23 of 28 remaining) [2023-08-25 03:59:14,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (22 of 28 remaining) [2023-08-25 03:59:14,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONASSERT (21 of 28 remaining) [2023-08-25 03:59:14,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 28 remaining) [2023-08-25 03:59:14,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 28 remaining) [2023-08-25 03:59:14,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 28 remaining) [2023-08-25 03:59:14,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 28 remaining) [2023-08-25 03:59:14,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (16 of 28 remaining) [2023-08-25 03:59:14,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 28 remaining) [2023-08-25 03:59:14,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 28 remaining) [2023-08-25 03:59:14,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 28 remaining) [2023-08-25 03:59:14,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONASSERT (12 of 28 remaining) [2023-08-25 03:59:14,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 28 remaining) [2023-08-25 03:59:14,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 28 remaining) [2023-08-25 03:59:14,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 28 remaining) [2023-08-25 03:59:14,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 28 remaining) [2023-08-25 03:59:14,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 28 remaining) [2023-08-25 03:59:14,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONASSERT (6 of 28 remaining) [2023-08-25 03:59:14,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 28 remaining) [2023-08-25 03:59:14,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 28 remaining) [2023-08-25 03:59:14,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 28 remaining) [2023-08-25 03:59:14,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 28 remaining) [2023-08-25 03:59:14,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 28 remaining) [2023-08-25 03:59:14,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONASSERT (0 of 28 remaining) [2023-08-25 03:59:14,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 03:59:14,516 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 03:59:14,520 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:59:14,520 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 03:59:14,582 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-25 03:59:14,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 422 transitions, 892 flow [2023-08-25 03:59:14,931 INFO L124 PetriNetUnfolderBase]: 205/1466 cut-off events. [2023-08-25 03:59:14,931 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 03:59:14,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 1466 events. 205/1466 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9678 event pairs, 1 based on Foata normal form. 0/1194 useless extension candidates. Maximal degree in co-relation 878. Up to 32 conditions per place. [2023-08-25 03:59:14,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 422 transitions, 892 flow [2023-08-25 03:59:14,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 422 transitions, 892 flow [2023-08-25 03:59:14,985 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:14,986 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 422 transitions, 892 flow [2023-08-25 03:59:14,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 422 transitions, 892 flow [2023-08-25 03:59:14,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 422 transitions, 892 flow [2023-08-25 03:59:15,273 INFO L124 PetriNetUnfolderBase]: 205/1466 cut-off events. [2023-08-25 03:59:15,276 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 03:59:15,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 1466 events. 205/1466 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9678 event pairs, 1 based on Foata normal form. 0/1194 useless extension candidates. Maximal degree in co-relation 878. Up to 32 conditions per place. [2023-08-25 03:59:15,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 112420 [2023-08-25 03:59:19,972 INFO L134 LiptonReduction]: Checked pairs total: 386666 [2023-08-25 03:59:19,972 INFO L136 LiptonReduction]: Total number of compositions: 268 [2023-08-25 03:59:19,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:19,975 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;@c7d1674, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:19,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-25 03:59:19,977 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:19,977 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-25 03:59:19,977 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:19,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:19,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:19,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-25 03:59:19,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 57708080, now seen corresponding path program 1 times [2023-08-25 03:59:19,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:19,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478524471] [2023-08-25 03:59:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:19,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:20,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:20,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478524471] [2023-08-25 03:59:20,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478524471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:20,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:20,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:20,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900282642] [2023-08-25 03:59:20,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:20,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:20,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:20,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:20,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:20,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 690 [2023-08-25 03:59:20,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 221 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 347.3333333333333) internal successors, (1042), 3 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:20,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:20,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 690 [2023-08-25 03:59:20,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand