/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/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:16:39,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:16:39,343 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 [2023-08-24 18:16:39,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:16:39,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:16:39,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:16:39,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:16:39,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:16:39,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:16:39,394 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:16:39,395 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:16:39,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:16:39,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:16:39,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:16:39,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:16:39,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:16:39,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:16:39,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:16:39,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:16:39,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:16:39,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:16:39,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:16:39,398 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:16:39,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:16:39,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:16:39,399 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:16:39,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:16:39,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:16:39,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:16:39,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:16:39,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:16:39,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:16:39,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:16:39,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:16:39,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:16:39,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:16:39,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:16:39,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:16:39,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:16:39,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:16:39,697 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:16:39,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-08-24 18:16:40,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:16:41,190 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:16:41,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-08-24 18:16:41,206 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed73dd9cb/7714f1aa2bcc43348077abe565aa077b/FLAG191d92d49 [2023-08-24 18:16:41,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed73dd9cb/7714f1aa2bcc43348077abe565aa077b [2023-08-24 18:16:41,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:16:41,227 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:16:41,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:16:41,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:16:41,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:16:41,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4ee94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41, skipping insertion in model container [2023-08-24 18:16:41,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,292 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:16:41,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:16:41,692 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:16:41,725 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 18:16:41,726 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 18:16:41,732 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-24 18:16:41,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:16:41,807 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:16:41,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41 WrapperNode [2023-08-24 18:16:41,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:16:41,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:16:41,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:16:41,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:16:41,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,856 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 214 [2023-08-24 18:16:41,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:16:41,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:16:41,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:16:41,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:16:41,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:16:41,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:16:41,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:16:41,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:16:41,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (1/1) ... [2023-08-24 18:16:41,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:16:41,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:16:41,961 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) [2023-08-24 18:16:41,963 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 [2023-08-24 18:16:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 18:16:41,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 18:16:41,992 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:16:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:16:41,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:16:41,994 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:16:42,112 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:16:42,115 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:16:42,502 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:16:42,510 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:16:42,511 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 18:16:42,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:16:42 BoogieIcfgContainer [2023-08-24 18:16:42,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:16:42,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:16:42,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:16:42,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:16:42,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:16:41" (1/3) ... [2023-08-24 18:16:42,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d67536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:16:42, skipping insertion in model container [2023-08-24 18:16:42,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:16:41" (2/3) ... [2023-08-24 18:16:42,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d67536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:16:42, skipping insertion in model container [2023-08-24 18:16:42,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:16:42" (3/3) ... [2023-08-24 18:16:42,519 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-08-24 18:16:42,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:16:42,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-24 18:16:42,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:16:42,623 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 18:16:42,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 232 transitions, 480 flow [2023-08-24 18:16:42,781 INFO L124 PetriNetUnfolderBase]: 12/230 cut-off events. [2023-08-24 18:16:42,782 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:16:42,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 230 events. 12/230 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 606 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2023-08-24 18:16:42,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 232 transitions, 480 flow [2023-08-24 18:16:42,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 221 transitions, 451 flow [2023-08-24 18:16:42,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:16:42,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 221 transitions, 451 flow [2023-08-24 18:16:42,835 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 221 transitions, 451 flow [2023-08-24 18:16:42,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 221 transitions, 451 flow [2023-08-24 18:16:42,898 INFO L124 PetriNetUnfolderBase]: 12/221 cut-off events. [2023-08-24 18:16:42,899 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 18:16:42,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 221 events. 12/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 546 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2023-08-24 18:16:42,913 INFO L119 LiptonReduction]: Number of co-enabled transitions 19012 [2023-08-24 18:16:46,932 INFO L134 LiptonReduction]: Checked pairs total: 66292 [2023-08-24 18:16:46,932 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-24 18:16:46,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:16:46,950 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;@7c3d709f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:16:46,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-24 18:16:46,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:16:46,954 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-24 18:16:46,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:16:46,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:46,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:16:46,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:46,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash 312439696, now seen corresponding path program 1 times [2023-08-24 18:16:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:46,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524103483] [2023-08-24 18:16:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:46,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:47,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:47,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524103483] [2023-08-24 18:16:47,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524103483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:47,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:47,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:47,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742566535] [2023-08-24 18:16:47,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:47,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:47,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:47,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 399 [2023-08-24 18:16:47,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:16:47,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:47,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 399 [2023-08-24 18:16:47,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:47,854 INFO L124 PetriNetUnfolderBase]: 2400/4911 cut-off events. [2023-08-24 18:16:47,855 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2023-08-24 18:16:47,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 4911 events. 2400/4911 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 30853 event pairs, 790 based on Foata normal form. 0/4155 useless extension candidates. Maximal degree in co-relation 8504. Up to 2674 conditions per place. [2023-08-24 18:16:47,892 INFO L140 encePairwiseOnDemand]: 379/399 looper letters, 90 selfloop transitions, 14 changer transitions 0/134 dead transitions. [2023-08-24 18:16:47,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 134 transitions, 491 flow [2023-08-24 18:16:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:16:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:16:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-08-24 18:16:47,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806182121971596 [2023-08-24 18:16:47,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-08-24 18:16:47,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-08-24 18:16:47,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:47,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-08-24 18:16:47,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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) [2023-08-24 18:16:47,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:16:47,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:16:47,935 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 181 flow. Second operand 3 states and 695 transitions. [2023-08-24 18:16:47,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 134 transitions, 491 flow [2023-08-24 18:16:47,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 134 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 18:16:47,944 INFO L231 Difference]: Finished difference. Result has 89 places, 100 transitions, 300 flow [2023-08-24 18:16:47,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=89, PETRI_TRANSITIONS=100} [2023-08-24 18:16:47,949 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2023-08-24 18:16:47,949 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 100 transitions, 300 flow [2023-08-24 18:16:47,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:16:47,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:47,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:16:47,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:47,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash -33101586, now seen corresponding path program 1 times [2023-08-24 18:16:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832104583] [2023-08-24 18:16:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:47,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832104583] [2023-08-24 18:16:47,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832104583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:47,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:47,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599100894] [2023-08-24 18:16:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:48,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:48,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:48,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 399 [2023-08-24 18:16:48,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 100 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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) [2023-08-24 18:16:48,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:48,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 399 [2023-08-24 18:16:48,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:48,684 INFO L124 PetriNetUnfolderBase]: 3583/7636 cut-off events. [2023-08-24 18:16:48,685 INFO L125 PetriNetUnfolderBase]: For 1144/1188 co-relation queries the response was YES. [2023-08-24 18:16:48,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15379 conditions, 7636 events. 3583/7636 cut-off events. For 1144/1188 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 56355 event pairs, 1076 based on Foata normal form. 0/6608 useless extension candidates. Maximal degree in co-relation 14730. Up to 3188 conditions per place. [2023-08-24 18:16:48,740 INFO L140 encePairwiseOnDemand]: 395/399 looper letters, 95 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2023-08-24 18:16:48,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 631 flow [2023-08-24 18:16:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:16:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:16:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2023-08-24 18:16:48,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048454469507101 [2023-08-24 18:16:48,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2023-08-24 18:16:48,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2023-08-24 18:16:48,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:48,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2023-08-24 18:16:48,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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) [2023-08-24 18:16:48,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:16:48,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:16:48,749 INFO L175 Difference]: Start difference. First operand has 89 places, 100 transitions, 300 flow. Second operand 3 states and 724 transitions. [2023-08-24 18:16:48,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 631 flow [2023-08-24 18:16:48,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 589 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:16:48,764 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 298 flow [2023-08-24 18:16:48,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2023-08-24 18:16:48,765 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2023-08-24 18:16:48,766 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 298 flow [2023-08-24 18:16:48,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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) [2023-08-24 18:16:48,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:48,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:48,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:16:48,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err5ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:48,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash -393135466, now seen corresponding path program 1 times [2023-08-24 18:16:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675995460] [2023-08-24 18:16:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:48,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675995460] [2023-08-24 18:16:48,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675995460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:48,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:48,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49933053] [2023-08-24 18:16:48,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:48,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:48,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 399 [2023-08-24 18:16:48,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-08-24 18:16:48,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:48,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 399 [2023-08-24 18:16:48,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:49,862 INFO L124 PetriNetUnfolderBase]: 4938/10799 cut-off events. [2023-08-24 18:16:49,862 INFO L125 PetriNetUnfolderBase]: For 835/849 co-relation queries the response was YES. [2023-08-24 18:16:49,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21503 conditions, 10799 events. 4938/10799 cut-off events. For 835/849 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 84328 event pairs, 2014 based on Foata normal form. 0/9481 useless extension candidates. Maximal degree in co-relation 20847. Up to 5661 conditions per place. [2023-08-24 18:16:49,942 INFO L140 encePairwiseOnDemand]: 394/399 looper letters, 84 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2023-08-24 18:16:49,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 137 transitions, 561 flow [2023-08-24 18:16:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:16:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:16:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-24 18:16:49,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5889724310776943 [2023-08-24 18:16:49,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-24 18:16:49,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-24 18:16:49,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:49,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-24 18:16:49,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-08-24 18:16:49,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:16:49,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:16:49,950 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 298 flow. Second operand 3 states and 705 transitions. [2023-08-24 18:16:49,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 137 transitions, 561 flow [2023-08-24 18:16:49,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 137 transitions, 553 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:16:49,956 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 316 flow [2023-08-24 18:16:49,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2023-08-24 18:16:49,957 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2023-08-24 18:16:49,957 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 316 flow [2023-08-24 18:16:49,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-08-24 18:16:49,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:49,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:49,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:16:49,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:49,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1948149667, now seen corresponding path program 1 times [2023-08-24 18:16:49,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:49,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764971009] [2023-08-24 18:16:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:50,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:50,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764971009] [2023-08-24 18:16:50,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764971009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:50,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:50,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:16:50,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681060737] [2023-08-24 18:16:50,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:50,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:16:50,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:50,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:16:50,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:16:50,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 399 [2023-08-24 18:16:50,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 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) [2023-08-24 18:16:50,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:50,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 399 [2023-08-24 18:16:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:56,240 INFO L124 PetriNetUnfolderBase]: 46693/78706 cut-off events. [2023-08-24 18:16:56,241 INFO L125 PetriNetUnfolderBase]: For 14113/14653 co-relation queries the response was YES. [2023-08-24 18:16:56,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170608 conditions, 78706 events. 46693/78706 cut-off events. For 14113/14653 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 672459 event pairs, 14425 based on Foata normal form. 7/67463 useless extension candidates. Maximal degree in co-relation 169446. Up to 41240 conditions per place. [2023-08-24 18:16:56,744 INFO L140 encePairwiseOnDemand]: 389/399 looper letters, 273 selfloop transitions, 21 changer transitions 0/328 dead transitions. [2023-08-24 18:16:56,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 328 transitions, 1543 flow [2023-08-24 18:16:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:16:56,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:16:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1379 transitions. [2023-08-24 18:16:56,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760233918128655 [2023-08-24 18:16:56,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1379 transitions. [2023-08-24 18:16:56,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1379 transitions. [2023-08-24 18:16:56,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:56,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1379 transitions. [2023-08-24 18:16:56,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.83333333333334) internal successors, (1379), 6 states have internal predecessors, (1379), 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) [2023-08-24 18:16:56,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 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) [2023-08-24 18:16:56,759 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 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) [2023-08-24 18:16:56,760 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 316 flow. Second operand 6 states and 1379 transitions. [2023-08-24 18:16:56,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 328 transitions, 1543 flow [2023-08-24 18:16:56,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 328 transitions, 1521 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:16:56,779 INFO L231 Difference]: Finished difference. Result has 101 places, 125 transitions, 452 flow [2023-08-24 18:16:56,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=101, PETRI_TRANSITIONS=125} [2023-08-24 18:16:56,781 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 13 predicate places. [2023-08-24 18:16:56,781 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 125 transitions, 452 flow [2023-08-24 18:16:56,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 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) [2023-08-24 18:16:56,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:56,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:16:56,782 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:56,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2138609058, now seen corresponding path program 1 times [2023-08-24 18:16:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230161219] [2023-08-24 18:16:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:56,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:56,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230161219] [2023-08-24 18:16:56,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230161219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:56,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:56,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:16:56,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342823649] [2023-08-24 18:16:56,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:56,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:16:56,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:56,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:16:56,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:16:56,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 399 [2023-08-24 18:16:56,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 125 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2023-08-24 18:16:56,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:56,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 399 [2023-08-24 18:16:56,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:16:59,391 INFO L124 PetriNetUnfolderBase]: 13484/33394 cut-off events. [2023-08-24 18:16:59,391 INFO L125 PetriNetUnfolderBase]: For 6073/6441 co-relation queries the response was YES. [2023-08-24 18:16:59,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70359 conditions, 33394 events. 13484/33394 cut-off events. For 6073/6441 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 353418 event pairs, 6385 based on Foata normal form. 0/28339 useless extension candidates. Maximal degree in co-relation 69755. Up to 22036 conditions per place. [2023-08-24 18:16:59,618 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 80 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2023-08-24 18:16:59,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 151 transitions, 697 flow [2023-08-24 18:16:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:16:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:16:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2023-08-24 18:16:59,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5931495405179615 [2023-08-24 18:16:59,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2023-08-24 18:16:59,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2023-08-24 18:16:59,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:16:59,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2023-08-24 18:16:59,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 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) [2023-08-24 18:16:59,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:16:59,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:16:59,626 INFO L175 Difference]: Start difference. First operand has 101 places, 125 transitions, 452 flow. Second operand 3 states and 710 transitions. [2023-08-24 18:16:59,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 151 transitions, 697 flow [2023-08-24 18:16:59,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 151 transitions, 697 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:16:59,640 INFO L231 Difference]: Finished difference. Result has 104 places, 126 transitions, 464 flow [2023-08-24 18:16:59,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=104, PETRI_TRANSITIONS=126} [2023-08-24 18:16:59,641 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 16 predicate places. [2023-08-24 18:16:59,641 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 126 transitions, 464 flow [2023-08-24 18:16:59,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2023-08-24 18:16:59,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:16:59,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:16:59,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:16:59,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:16:59,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:16:59,642 INFO L85 PathProgramCache]: Analyzing trace with hash -895997480, now seen corresponding path program 1 times [2023-08-24 18:16:59,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:16:59,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44247986] [2023-08-24 18:16:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:16:59,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:16:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:16:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:16:59,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:16:59,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44247986] [2023-08-24 18:16:59,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44247986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:16:59,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:16:59,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:16:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602133551] [2023-08-24 18:16:59,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:16:59,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:16:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:16:59,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:16:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:16:59,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 399 [2023-08-24 18:16:59,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 126 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 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) [2023-08-24 18:16:59,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:16:59,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 399 [2023-08-24 18:16:59,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:07,345 INFO L124 PetriNetUnfolderBase]: 52835/92709 cut-off events. [2023-08-24 18:17:07,346 INFO L125 PetriNetUnfolderBase]: For 54680/54841 co-relation queries the response was YES. [2023-08-24 18:17:07,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238653 conditions, 92709 events. 52835/92709 cut-off events. For 54680/54841 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 816391 event pairs, 28158 based on Foata normal form. 0/83449 useless extension candidates. Maximal degree in co-relation 237751. Up to 75519 conditions per place. [2023-08-24 18:17:07,914 INFO L140 encePairwiseOnDemand]: 385/399 looper letters, 188 selfloop transitions, 44 changer transitions 0/265 dead transitions. [2023-08-24 18:17:07,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 265 transitions, 1368 flow [2023-08-24 18:17:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:17:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:17:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1313 transitions. [2023-08-24 18:17:07,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484544695071011 [2023-08-24 18:17:07,918 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1313 transitions. [2023-08-24 18:17:07,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1313 transitions. [2023-08-24 18:17:07,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:07,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1313 transitions. [2023-08-24 18:17:07,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.83333333333334) internal successors, (1313), 6 states have internal predecessors, (1313), 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) [2023-08-24 18:17:07,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 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) [2023-08-24 18:17:07,926 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 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) [2023-08-24 18:17:07,926 INFO L175 Difference]: Start difference. First operand has 104 places, 126 transitions, 464 flow. Second operand 6 states and 1313 transitions. [2023-08-24 18:17:07,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 265 transitions, 1368 flow [2023-08-24 18:17:08,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 265 transitions, 1366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:17:08,188 INFO L231 Difference]: Finished difference. Result has 112 places, 165 transitions, 768 flow [2023-08-24 18:17:08,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=768, PETRI_PLACES=112, PETRI_TRANSITIONS=165} [2023-08-24 18:17:08,189 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 24 predicate places. [2023-08-24 18:17:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 165 transitions, 768 flow [2023-08-24 18:17:08,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 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) [2023-08-24 18:17:08,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:08,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:17:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:17:08,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:08,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1426041745, now seen corresponding path program 1 times [2023-08-24 18:17:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:08,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580608567] [2023-08-24 18:17:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:08,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580608567] [2023-08-24 18:17:08,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580608567] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:08,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:08,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:17:08,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023299506] [2023-08-24 18:17:08,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:08,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:17:08,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:08,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:17:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:17:08,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 399 [2023-08-24 18:17:08,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 165 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2023-08-24 18:17:08,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:08,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 399 [2023-08-24 18:17:08,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:11,997 INFO L124 PetriNetUnfolderBase]: 18316/43047 cut-off events. [2023-08-24 18:17:11,997 INFO L125 PetriNetUnfolderBase]: For 20270/22148 co-relation queries the response was YES. [2023-08-24 18:17:12,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103712 conditions, 43047 events. 18316/43047 cut-off events. For 20270/22148 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 457234 event pairs, 7644 based on Foata normal form. 550/39179 useless extension candidates. Maximal degree in co-relation 97361. Up to 24413 conditions per place. [2023-08-24 18:17:12,260 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 96 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2023-08-24 18:17:12,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 206 transitions, 1116 flow [2023-08-24 18:17:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:17:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:17:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-24 18:17:12,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5973266499582289 [2023-08-24 18:17:12,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-24 18:17:12,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-24 18:17:12,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:12,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-24 18:17:12,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 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) [2023-08-24 18:17:12,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:17:12,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2023-08-24 18:17:12,267 INFO L175 Difference]: Start difference. First operand has 112 places, 165 transitions, 768 flow. Second operand 3 states and 715 transitions. [2023-08-24 18:17:12,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 206 transitions, 1116 flow [2023-08-24 18:17:12,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 206 transitions, 1092 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-24 18:17:12,450 INFO L231 Difference]: Finished difference. Result has 115 places, 166 transitions, 756 flow [2023-08-24 18:17:12,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=756, PETRI_PLACES=115, PETRI_TRANSITIONS=166} [2023-08-24 18:17:12,451 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 27 predicate places. [2023-08-24 18:17:12,451 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 166 transitions, 756 flow [2023-08-24 18:17:12,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2023-08-24 18:17:12,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:12,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:17:12,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:17:12,452 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:12,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2085473312, now seen corresponding path program 1 times [2023-08-24 18:17:12,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954546682] [2023-08-24 18:17:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:12,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:12,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954546682] [2023-08-24 18:17:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954546682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:12,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 18:17:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403833376] [2023-08-24 18:17:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:12,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 18:17:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:12,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 18:17:12,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-24 18:17:12,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-24 18:17:12,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 166 transitions, 756 flow. Second operand has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 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) [2023-08-24 18:17:12,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:12,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-24 18:17:12,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:23,744 INFO L124 PetriNetUnfolderBase]: 69839/121816 cut-off events. [2023-08-24 18:17:23,744 INFO L125 PetriNetUnfolderBase]: For 94028/94456 co-relation queries the response was YES. [2023-08-24 18:17:24,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348669 conditions, 121816 events. 69839/121816 cut-off events. For 94028/94456 co-relation queries the response was YES. Maximal size of possible extension queue 2150. Compared 1127407 event pairs, 23644 based on Foata normal form. 2281/113040 useless extension candidates. Maximal degree in co-relation 347283. Up to 52644 conditions per place. [2023-08-24 18:17:24,858 INFO L140 encePairwiseOnDemand]: 387/399 looper letters, 425 selfloop transitions, 31 changer transitions 0/489 dead transitions. [2023-08-24 18:17:24,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 489 transitions, 2865 flow [2023-08-24 18:17:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 18:17:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 18:17:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1725 transitions. [2023-08-24 18:17:24,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404135338345865 [2023-08-24 18:17:24,863 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1725 transitions. [2023-08-24 18:17:24,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1725 transitions. [2023-08-24 18:17:24,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:24,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1725 transitions. [2023-08-24 18:17:24,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 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) [2023-08-24 18:17:24,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 399.0) internal successors, (3591), 9 states have internal predecessors, (3591), 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) [2023-08-24 18:17:24,873 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 399.0) internal successors, (3591), 9 states have internal predecessors, (3591), 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) [2023-08-24 18:17:24,873 INFO L175 Difference]: Start difference. First operand has 115 places, 166 transitions, 756 flow. Second operand 8 states and 1725 transitions. [2023-08-24 18:17:24,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 489 transitions, 2865 flow [2023-08-24 18:17:27,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 489 transitions, 2854 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:17:27,822 INFO L231 Difference]: Finished difference. Result has 124 places, 176 transitions, 954 flow [2023-08-24 18:17:27,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=954, PETRI_PLACES=124, PETRI_TRANSITIONS=176} [2023-08-24 18:17:27,823 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 36 predicate places. [2023-08-24 18:17:27,824 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 176 transitions, 954 flow [2023-08-24 18:17:27,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 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) [2023-08-24 18:17:27,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:27,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:17:27,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 18:17:27,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:27,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1312452550, now seen corresponding path program 2 times [2023-08-24 18:17:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:27,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661287457] [2023-08-24 18:17:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661287457] [2023-08-24 18:17:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661287457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:28,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:28,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 18:17:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161311994] [2023-08-24 18:17:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:28,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 18:17:28,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 18:17:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-24 18:17:28,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-24 18:17:28,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 176 transitions, 954 flow. Second operand has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 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) [2023-08-24 18:17:28,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:28,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-24 18:17:28,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:17:42,524 INFO L124 PetriNetUnfolderBase]: 93834/160890 cut-off events. [2023-08-24 18:17:42,525 INFO L125 PetriNetUnfolderBase]: For 201289/201878 co-relation queries the response was YES. [2023-08-24 18:17:43,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500870 conditions, 160890 events. 93834/160890 cut-off events. For 201289/201878 co-relation queries the response was YES. Maximal size of possible extension queue 2740. Compared 1503417 event pairs, 21554 based on Foata normal form. 2594/149121 useless extension candidates. Maximal degree in co-relation 499791. Up to 57075 conditions per place. [2023-08-24 18:17:43,802 INFO L140 encePairwiseOnDemand]: 391/399 looper letters, 460 selfloop transitions, 31 changer transitions 0/524 dead transitions. [2023-08-24 18:17:43,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 524 transitions, 3447 flow [2023-08-24 18:17:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 18:17:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 18:17:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1862 transitions. [2023-08-24 18:17:43,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2023-08-24 18:17:43,807 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1862 transitions. [2023-08-24 18:17:43,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1862 transitions. [2023-08-24 18:17:43,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:17:43,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1862 transitions. [2023-08-24 18:17:43,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.88888888888889) internal successors, (1862), 9 states have internal predecessors, (1862), 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) [2023-08-24 18:17:43,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 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) [2023-08-24 18:17:43,816 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 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) [2023-08-24 18:17:43,816 INFO L175 Difference]: Start difference. First operand has 124 places, 176 transitions, 954 flow. Second operand 9 states and 1862 transitions. [2023-08-24 18:17:43,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 524 transitions, 3447 flow [2023-08-24 18:17:49,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 524 transitions, 3410 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 18:17:49,217 INFO L231 Difference]: Finished difference. Result has 134 places, 202 transitions, 1258 flow [2023-08-24 18:17:49,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1258, PETRI_PLACES=134, PETRI_TRANSITIONS=202} [2023-08-24 18:17:49,218 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 46 predicate places. [2023-08-24 18:17:49,218 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 202 transitions, 1258 flow [2023-08-24 18:17:49,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 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) [2023-08-24 18:17:49,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:17:49,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:17:49,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 18:17:49,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:17:49,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:17:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash 503676214, now seen corresponding path program 3 times [2023-08-24 18:17:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:17:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487650104] [2023-08-24 18:17:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:17:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:17:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:17:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:17:49,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:17:49,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487650104] [2023-08-24 18:17:49,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487650104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:17:49,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:17:49,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 18:17:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295630157] [2023-08-24 18:17:49,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:17:49,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 18:17:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:17:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 18:17:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-24 18:17:49,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-08-24 18:17:49,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 202 transitions, 1258 flow. Second operand has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 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) [2023-08-24 18:17:49,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:17:49,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-08-24 18:17:49,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:18:11,387 INFO L124 PetriNetUnfolderBase]: 120968/209834 cut-off events. [2023-08-24 18:18:11,387 INFO L125 PetriNetUnfolderBase]: For 532819/533633 co-relation queries the response was YES. [2023-08-24 18:18:12,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722748 conditions, 209834 events. 120968/209834 cut-off events. For 532819/533633 co-relation queries the response was YES. Maximal size of possible extension queue 3521. Compared 2055594 event pairs, 38110 based on Foata normal form. 2512/193347 useless extension candidates. Maximal degree in co-relation 721635. Up to 78442 conditions per place. [2023-08-24 18:18:13,426 INFO L140 encePairwiseOnDemand]: 387/399 looper letters, 532 selfloop transitions, 53 changer transitions 0/618 dead transitions. [2023-08-24 18:18:13,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 618 transitions, 4163 flow [2023-08-24 18:18:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 18:18:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 18:18:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1947 transitions. [2023-08-24 18:18:13,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421888053467001 [2023-08-24 18:18:13,431 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1947 transitions. [2023-08-24 18:18:13,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1947 transitions. [2023-08-24 18:18:13,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:18:13,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1947 transitions. [2023-08-24 18:18:13,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.33333333333334) internal successors, (1947), 9 states have internal predecessors, (1947), 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) [2023-08-24 18:18:13,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 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) [2023-08-24 18:18:13,441 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 399.0) internal successors, (3990), 10 states have internal predecessors, (3990), 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) [2023-08-24 18:18:13,441 INFO L175 Difference]: Start difference. First operand has 134 places, 202 transitions, 1258 flow. Second operand 9 states and 1947 transitions. [2023-08-24 18:18:13,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 618 transitions, 4163 flow [2023-08-24 18:18:53,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 618 transitions, 4162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:18:53,614 INFO L231 Difference]: Finished difference. Result has 146 places, 229 transitions, 1774 flow [2023-08-24 18:18:53,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1774, PETRI_PLACES=146, PETRI_TRANSITIONS=229} [2023-08-24 18:18:53,615 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 58 predicate places. [2023-08-24 18:18:53,615 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 229 transitions, 1774 flow [2023-08-24 18:18:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 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) [2023-08-24 18:18:53,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:18:53,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:18:53,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 18:18:53,617 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 29 more)] === [2023-08-24 18:18:53,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:18:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1018093213, now seen corresponding path program 1 times [2023-08-24 18:18:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:18:53,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108950602] [2023-08-24 18:18:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:18:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:18:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:18:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:18:53,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:18:53,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108950602] [2023-08-24 18:18:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108950602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:18:53,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:18:53,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 18:18:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663766838] [2023-08-24 18:18:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:18:53,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 18:18:53,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:18:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 18:18:53,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-24 18:18:53,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 399 [2023-08-24 18:18:53,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 229 transitions, 1774 flow. Second operand has 9 states, 9 states have (on average 174.88888888888889) internal successors, (1574), 9 states have internal predecessors, (1574), 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) [2023-08-24 18:18:53,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:18:53,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 399 [2023-08-24 18:18:53,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand