/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_79-equ_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:14:07,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:14:07,222 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 04:14:07,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:14:07,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:14:07,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:14:07,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:14:07,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:14:07,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:14:07,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:14:07,260 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:14:07,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:14:07,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:14:07,262 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:14:07,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:14:07,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:14:07,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:14:07,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:14:07,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:14:07,263 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:14:07,263 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:14:07,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:14:07,263 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:14:07,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:14:07,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:14:07,264 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:14:07,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:14:07,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:14:07,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:14:07,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:14:07,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:14:07,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:14:07,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:14:07,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:14:07,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:14:07,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:14:07,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:14:07,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:14:07,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:14:07,535 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:14:07,535 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:14:07,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-25 04:14:08,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:14:08,675 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:14:08,675 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-25 04:14:08,691 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbed3fc50/09142f51cc8e4969b8672a15a90fca76/FLAG19ffaa952 [2023-08-25 04:14:08,702 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbed3fc50/09142f51cc8e4969b8672a15a90fca76 [2023-08-25 04:14:08,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:14:08,708 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:14:08,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:14:08,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:14:08,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:14:08,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:14:08" (1/1) ... [2023-08-25 04:14:08,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbc5b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:08, skipping insertion in model container [2023-08-25 04:14:08,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:14:08" (1/1) ... [2023-08-25 04:14:08,757 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:14:09,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:14:09,098 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:14:09,109 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:14:09,110 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:14:09,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:14:09,208 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:14:09,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09 WrapperNode [2023-08-25 04:14:09,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:14:09,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:14:09,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:14:09,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:14:09,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,279 INFO L138 Inliner]: procedures = 271, calls = 57, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 275 [2023-08-25 04:14:09,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:14:09,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:14:09,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:14:09,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:14:09,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:14:09,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:14:09,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:14:09,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:14:09,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (1/1) ... [2023-08-25 04:14:09,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:14:09,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:14:09,386 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 04:14:09,398 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 04:14:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:14:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:14:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:14:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:14:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:14:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:14:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 04:14:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 04:14:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:14:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:14:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:14:09,416 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 04:14:09,542 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:14:09,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:14:09,913 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:14:09,920 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:14:09,921 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-25 04:14:09,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:14:09 BoogieIcfgContainer [2023-08-25 04:14:09,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:14:09,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:14:09,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:14:09,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:14:09,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:14:08" (1/3) ... [2023-08-25 04:14:09,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f92446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:14:09, skipping insertion in model container [2023-08-25 04:14:09,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:09" (2/3) ... [2023-08-25 04:14:09,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f92446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:14:09, skipping insertion in model container [2023-08-25 04:14:09,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:14:09" (3/3) ... [2023-08-25 04:14:09,929 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-08-25 04:14:09,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:14:09,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-25 04:14:09,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:14:10,009 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 04:14:10,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 285 transitions, 578 flow [2023-08-25 04:14:10,142 INFO L124 PetriNetUnfolderBase]: 46/401 cut-off events. [2023-08-25 04:14:10,142 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:14:10,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 401 events. 46/401 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1627 event pairs, 0 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-25 04:14:10,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 285 transitions, 578 flow [2023-08-25 04:14:10,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 283 transitions, 574 flow [2023-08-25 04:14:10,154 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:14:10,160 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 283 transitions, 574 flow [2023-08-25 04:14:10,161 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 283 transitions, 574 flow [2023-08-25 04:14:10,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 283 transitions, 574 flow [2023-08-25 04:14:10,223 INFO L124 PetriNetUnfolderBase]: 45/399 cut-off events. [2023-08-25 04:14:10,224 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:14:10,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 399 events. 45/399 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1645 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-25 04:14:10,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 23180 [2023-08-25 04:14:15,583 INFO L134 LiptonReduction]: Checked pairs total: 121719 [2023-08-25 04:14:15,583 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-25 04:14:15,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:14:15,607 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;@77d24295, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:14:15,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 04:14:15,617 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:14:15,617 INFO L124 PetriNetUnfolderBase]: 8/35 cut-off events. [2023-08-25 04:14:15,617 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:14:15,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:14:15,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 04:14:15,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:14:15,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:14:15,622 INFO L85 PathProgramCache]: Analyzing trace with hash -391684397, now seen corresponding path program 1 times [2023-08-25 04:14:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:14:15,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828077472] [2023-08-25 04:14:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:14:15,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:14:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:14:15,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:14:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:14:15,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:14:15,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:14:15,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 04:14:15,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 04:14:15,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 04:14:15,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-25 04:14:15,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 04:14:15,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (14 of 20 remaining) [2023-08-25 04:14:15,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 04:14:15,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 04:14:15,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 04:14:15,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 04:14:15,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 04:14:15,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (8 of 20 remaining) [2023-08-25 04:14:15,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 04:14:15,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 04:14:15,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 04:14:15,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 04:14:15,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 04:14:15,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (2 of 20 remaining) [2023-08-25 04:14:15,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 04:14:15,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 04:14:15,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:14:15,782 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 04:14:15,783 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:14:15,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:14:15,816 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 04:14:15,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 382 transitions, 782 flow [2023-08-25 04:14:15,898 INFO L124 PetriNetUnfolderBase]: 77/645 cut-off events. [2023-08-25 04:14:15,899 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:14:15,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 645 events. 77/645 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3228 event pairs, 0 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 403. Up to 12 conditions per place. [2023-08-25 04:14:15,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 382 transitions, 782 flow [2023-08-25 04:14:15,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 380 transitions, 778 flow [2023-08-25 04:14:15,910 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:14:15,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 380 transitions, 778 flow [2023-08-25 04:14:15,911 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 380 transitions, 778 flow [2023-08-25 04:14:15,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 380 transitions, 778 flow [2023-08-25 04:14:15,975 INFO L124 PetriNetUnfolderBase]: 76/643 cut-off events. [2023-08-25 04:14:15,975 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:14:15,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 643 events. 76/643 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3256 event pairs, 0 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 401. Up to 12 conditions per place. [2023-08-25 04:14:16,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 66500 [2023-08-25 04:14:20,857 INFO L134 LiptonReduction]: Checked pairs total: 321927 [2023-08-25 04:14:20,857 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-08-25 04:14:20,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:14:20,859 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;@77d24295, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:14:20,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-25 04:14:20,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:14:20,863 INFO L124 PetriNetUnfolderBase]: 16/79 cut-off events. [2023-08-25 04:14:20,863 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:14:20,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:14:20,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:14:20,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:14:20,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:14:20,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1960769091, now seen corresponding path program 1 times [2023-08-25 04:14:20,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:14:20,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989775599] [2023-08-25 04:14:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:14:20,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:14:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:14:20,991 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 04:14:20,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:14:20,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989775599] [2023-08-25 04:14:20,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989775599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:14:20,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:14:20,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:14:20,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272835564] [2023-08-25 04:14:20,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:14:20,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:14:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:14:21,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:14:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:14:21,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 622 [2023-08-25 04:14:21,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 195 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 04:14:21,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:14:21,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 622 [2023-08-25 04:14:21,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:14:23,712 INFO L124 PetriNetUnfolderBase]: 16699/40126 cut-off events. [2023-08-25 04:14:23,712 INFO L125 PetriNetUnfolderBase]: For 158/178 co-relation queries the response was YES. [2023-08-25 04:14:23,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65004 conditions, 40126 events. 16699/40126 cut-off events. For 158/178 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 454485 event pairs, 7596 based on Foata normal form. 6332/41779 useless extension candidates. Maximal degree in co-relation 4190. Up to 24717 conditions per place. [2023-08-25 04:14:23,903 INFO L140 encePairwiseOnDemand]: 587/622 looper letters, 82 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2023-08-25 04:14:23,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 183 transitions, 552 flow [2023-08-25 04:14:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:14:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:14:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2023-08-25 04:14:23,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.597534833869239 [2023-08-25 04:14:23,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2023-08-25 04:14:23,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2023-08-25 04:14:23,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:14:23,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2023-08-25 04:14:23,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 04:14:23,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states 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 04:14:23,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states 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 04:14:23,937 INFO L175 Difference]: Start difference. First operand has 163 places, 195 transitions, 408 flow. Second operand 3 states and 1115 transitions. [2023-08-25 04:14:23,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 183 transitions, 552 flow [2023-08-25 04:14:23,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 183 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:14:23,946 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 356 flow [2023-08-25 04:14:23,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=622, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2023-08-25 04:14:23,952 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, 3 predicate places. [2023-08-25 04:14:23,953 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 356 flow [2023-08-25 04:14:23,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 04:14:23,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:14:23,953 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 04:14:23,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 04:14:23,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:14:23,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:14:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash 441953097, now seen corresponding path program 1 times [2023-08-25 04:14:23,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:14:23,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823882131] [2023-08-25 04:14:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:14:23,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:14:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:14:23,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:14:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:14:24,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:14:24,016 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:14:24,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-08-25 04:14:24,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-25 04:14:24,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-25 04:14:24,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-25 04:14:24,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-25 04:14:24,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (20 of 26 remaining) [2023-08-25 04:14:24,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (14 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-25 04:14:24,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (8 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (2 of 26 remaining) [2023-08-25 04:14:24,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-25 04:14:24,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-25 04:14:24,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 04:14:24,020 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 04:14:24,020 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:14:24,020 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 04:14:24,043 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 04:14:24,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 988 flow [2023-08-25 04:14:24,217 INFO L124 PetriNetUnfolderBase]: 113/934 cut-off events. [2023-08-25 04:14:24,217 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:14:24,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 934 events. 113/934 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5136 event pairs, 1 based on Foata normal form. 0/767 useless extension candidates. Maximal degree in co-relation 653. Up to 16 conditions per place. [2023-08-25 04:14:24,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 479 transitions, 988 flow [2023-08-25 04:14:24,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 426 places, 477 transitions, 984 flow [2023-08-25 04:14:24,232 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:14:24,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 426 places, 477 transitions, 984 flow [2023-08-25 04:14:24,233 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 426 places, 477 transitions, 984 flow [2023-08-25 04:14:24,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 426 places, 477 transitions, 984 flow [2023-08-25 04:14:24,357 INFO L124 PetriNetUnfolderBase]: 112/932 cut-off events. [2023-08-25 04:14:24,357 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:14:24,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 932 events. 112/932 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5158 event pairs, 1 based on Foata normal form. 0/766 useless extension candidates. Maximal degree in co-relation 651. Up to 16 conditions per place. [2023-08-25 04:14:24,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 127680 [2023-08-25 04:14:29,863 INFO L134 LiptonReduction]: Checked pairs total: 628355 [2023-08-25 04:14:29,863 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-08-25 04:14:29,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:14:29,871 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;@77d24295, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:14:29,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-25 04:14:29,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:14:29,876 INFO L124 PetriNetUnfolderBase]: 13/73 cut-off events. [2023-08-25 04:14:29,876 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:14:29,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:14:29,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:14:29,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-25 04:14:29,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:14:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1862590980, now seen corresponding path program 1 times [2023-08-25 04:14:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:14:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195483633] [2023-08-25 04:14:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:14:29,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:14:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:14:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:14:29,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:14:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195483633] [2023-08-25 04:14:29,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195483633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:14:29,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:14:29,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:14:29,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047188652] [2023-08-25 04:14:29,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:14:29,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:14:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:14:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:14:29,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:14:29,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 770 [2023-08-25 04:14:29,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 255 transitions, 540 flow. Second operand has 2 states, 2 states have (on average 421.0) internal successors, (842), 2 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 04:14:29,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:14:29,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 770 [2023-08-25 04:14:29,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:15:38,568 INFO L124 PetriNetUnfolderBase]: 493853/934375 cut-off events. [2023-08-25 04:15:38,569 INFO L125 PetriNetUnfolderBase]: For 5751/6346 co-relation queries the response was YES. [2023-08-25 04:15:41,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571674 conditions, 934375 events. 493853/934375 cut-off events. For 5751/6346 co-relation queries the response was YES. Maximal size of possible extension queue 21189. Compared 12573565 event pairs, 463987 based on Foata normal form. 115821/936946 useless extension candidates. Maximal degree in co-relation 327872. Up to 634349 conditions per place. [2023-08-25 04:15:46,353 INFO L140 encePairwiseOnDemand]: 728/770 looper letters, 84 selfloop transitions, 0 changer transitions 0/213 dead transitions. [2023-08-25 04:15:46,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 213 transitions, 624 flow [2023-08-25 04:15:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:15:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:15:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 964 transitions. [2023-08-25 04:15:46,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625974025974026 [2023-08-25 04:15:46,356 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 964 transitions. [2023-08-25 04:15:46,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 964 transitions. [2023-08-25 04:15:46,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:15:46,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 964 transitions. [2023-08-25 04:15:46,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 482.0) internal successors, (964), 2 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 04:15:46,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 770.0) internal successors, (2310), 3 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states 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 04:15:46,361 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 770.0) internal successors, (2310), 3 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states 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 04:15:46,361 INFO L175 Difference]: Start difference. First operand has 213 places, 255 transitions, 540 flow. Second operand 2 states and 964 transitions. [2023-08-25 04:15:46,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 213 transitions, 624 flow [2023-08-25 04:15:46,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 213 transitions, 624 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:15:46,369 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 456 flow [2023-08-25 04:15:46,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=770, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=456, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2023-08-25 04:15:46,370 INFO L281 CegarLoopForPetriNet]: 213 programPoint places, 1 predicate places. [2023-08-25 04:15:46,370 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 456 flow [2023-08-25 04:15:46,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 421.0) internal successors, (842), 2 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 04:15:46,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:15:46,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:15:46,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 04:15:46,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-25 04:15:46,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:15:46,374 INFO L85 PathProgramCache]: Analyzing trace with hash 9765017, now seen corresponding path program 1 times [2023-08-25 04:15:46,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:15:46,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873038371] [2023-08-25 04:15:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:15:46,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:15:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:15:46,788 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 04:15:46,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:15:46,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873038371] [2023-08-25 04:15:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873038371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:15:46,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:15:46,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 04:15:46,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235326374] [2023-08-25 04:15:46,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:15:46,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 04:15:46,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:15:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 04:15:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 04:15:46,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 770 [2023-08-25 04:15:46,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 213 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 286.6666666666667) internal successors, (1720), 6 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states 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 04:15:46,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:15:46,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 770 [2023-08-25 04:15:46,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand