/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-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:33:12,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:33:12,313 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 07:33:12,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:33:12,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:33:12,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:33:12,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:33:12,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:33:12,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:33:12,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:33:12,361 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:33:12,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:33:12,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:33:12,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:33:12,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:33:12,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:33:12,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:33:12,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:33:12,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:33:12,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:33:12,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:33:12,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:33:12,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:33:12,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:33:12,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:33:12,366 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:33:12,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:33:12,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:33:12,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:33:12,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:33:12,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:33:12,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:33:12,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:33:12,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:33:12,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:33:12,368 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:33:12,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:33:12,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:33:12,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:33:12,694 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:33:12,694 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:33:12,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-08-25 07:33:13,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:33:14,148 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:33:14,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-08-25 07:33:14,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4657df20d/3f84cf41cac7448f8b0d8d2cb00b6099/FLAGc51a6f437 [2023-08-25 07:33:14,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4657df20d/3f84cf41cac7448f8b0d8d2cb00b6099 [2023-08-25 07:33:14,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:33:14,192 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:33:14,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:33:14,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:33:14,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:33:14,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65eca69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14, skipping insertion in model container [2023-08-25 07:33:14,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,250 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:33:14,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:33:14,615 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:33:14,638 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [208] [2023-08-25 07:33:14,640 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [209] [2023-08-25 07:33:14,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:33:14,709 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:33:14,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14 WrapperNode [2023-08-25 07:33:14,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:33:14,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:33:14,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:33:14,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:33:14,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,791 INFO L138 Inliner]: procedures = 168, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2023-08-25 07:33:14,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:33:14,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:33:14,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:33:14,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:33:14,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:33:14,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:33:14,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:33:14,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:33:14,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (1/1) ... [2023-08-25 07:33:14,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:33:14,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:33:14,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 07:33:14,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 07:33:14,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:33:14,932 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 07:33:14,932 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 07:33:14,932 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 07:33:14,933 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 07:33:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:33:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 07:33:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:33:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:33:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:33:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-25 07:33:14,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:33:14,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:33:14,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:33:14,935 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 07:33:15,083 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:33:15,084 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:33:15,490 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:33:15,499 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:33:15,499 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 07:33:15,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:33:15 BoogieIcfgContainer [2023-08-25 07:33:15,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:33:15,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:33:15,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:33:15,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:33:15,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:33:14" (1/3) ... [2023-08-25 07:33:15,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba5e15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:33:15, skipping insertion in model container [2023-08-25 07:33:15,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:33:14" (2/3) ... [2023-08-25 07:33:15,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba5e15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:33:15, skipping insertion in model container [2023-08-25 07:33:15,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:33:15" (3/3) ... [2023-08-25 07:33:15,518 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2023-08-25 07:33:15,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:33:15,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-25 07:33:15,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:33:15,647 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 07:33:15,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 303 transitions, 622 flow [2023-08-25 07:33:15,839 INFO L124 PetriNetUnfolderBase]: 16/301 cut-off events. [2023-08-25 07:33:15,840 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:33:15,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 301 events. 16/301 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 847 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-08-25 07:33:15,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 303 transitions, 622 flow [2023-08-25 07:33:15,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 292 transitions, 593 flow [2023-08-25 07:33:15,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:33:15,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 292 transitions, 593 flow [2023-08-25 07:33:15,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 292 transitions, 593 flow [2023-08-25 07:33:15,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 292 transitions, 593 flow [2023-08-25 07:33:15,924 INFO L124 PetriNetUnfolderBase]: 16/292 cut-off events. [2023-08-25 07:33:15,925 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 07:33:15,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 292 events. 16/292 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 786 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-08-25 07:33:15,943 INFO L119 LiptonReduction]: Number of co-enabled transitions 25368 [2023-08-25 07:33:21,580 INFO L134 LiptonReduction]: Checked pairs total: 130043 [2023-08-25 07:33:21,583 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-08-25 07:33:21,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:33:21,613 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;@53bf8b5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:33:21,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2023-08-25 07:33:21,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:33:21,615 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 07:33:21,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:33:21,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:21,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 07:33:21,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:21,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1148, now seen corresponding path program 1 times [2023-08-25 07:33:21,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:21,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386575666] [2023-08-25 07:33:21,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:21,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:21,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386575666] [2023-08-25 07:33:21,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386575666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:21,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:21,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 07:33:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425307170] [2023-08-25 07:33:21,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:33:21,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:33:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:33:21,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 547 [2023-08-25 07:33:21,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 261 flow. Second operand has 2 states, 2 states have (on average 288.5) internal successors, (577), 2 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:21,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:21,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 547 [2023-08-25 07:33:21,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:22,117 INFO L124 PetriNetUnfolderBase]: 1595/3705 cut-off events. [2023-08-25 07:33:22,118 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-08-25 07:33:22,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6288 conditions, 3705 events. 1595/3705 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 27416 event pairs, 1251 based on Foata normal form. 126/2984 useless extension candidates. Maximal degree in co-relation 5996. Up to 2515 conditions per place. [2023-08-25 07:33:22,149 INFO L140 encePairwiseOnDemand]: 534/547 looper letters, 54 selfloop transitions, 0 changer transitions 0/113 dead transitions. [2023-08-25 07:33:22,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 343 flow [2023-08-25 07:33:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:33:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:33:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 643 transitions. [2023-08-25 07:33:22,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877513711151737 [2023-08-25 07:33:22,169 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 643 transitions. [2023-08-25 07:33:22,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 643 transitions. [2023-08-25 07:33:22,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:22,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 643 transitions. [2023-08-25 07:33:22,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 321.5) internal successors, (643), 2 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:22,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:22,188 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:22,190 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 261 flow. Second operand 2 states and 643 transitions. [2023-08-25 07:33:22,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 343 flow [2023-08-25 07:33:22,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 07:33:22,199 INFO L231 Difference]: Finished difference. Result has 110 places, 113 transitions, 230 flow [2023-08-25 07:33:22,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=230, PETRI_PLACES=110, PETRI_TRANSITIONS=113} [2023-08-25 07:33:22,205 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2023-08-25 07:33:22,205 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 113 transitions, 230 flow [2023-08-25 07:33:22,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 288.5) internal successors, (577), 2 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:22,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:22,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 07:33:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:33:22,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:22,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash -599294415, now seen corresponding path program 1 times [2023-08-25 07:33:22,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:22,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191019795] [2023-08-25 07:33:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:22,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191019795] [2023-08-25 07:33:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191019795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:22,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:22,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:22,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638952285] [2023-08-25 07:33:22,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:22,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:22,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:22,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:22,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:22,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 547 [2023-08-25 07:33:22,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 113 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:22,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:22,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 547 [2023-08-25 07:33:22,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:23,032 INFO L124 PetriNetUnfolderBase]: 3733/7900 cut-off events. [2023-08-25 07:33:23,033 INFO L125 PetriNetUnfolderBase]: For 22/47 co-relation queries the response was YES. [2023-08-25 07:33:23,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13862 conditions, 7900 events. 3733/7900 cut-off events. For 22/47 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 60540 event pairs, 982 based on Foata normal form. 1/6262 useless extension candidates. Maximal degree in co-relation 13859. Up to 3266 conditions per place. [2023-08-25 07:33:23,094 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 111 selfloop transitions, 4 changer transitions 0/166 dead transitions. [2023-08-25 07:33:23,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 166 transitions, 569 flow [2023-08-25 07:33:23,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 944 transitions. [2023-08-25 07:33:23,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752589884216941 [2023-08-25 07:33:23,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 944 transitions. [2023-08-25 07:33:23,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 944 transitions. [2023-08-25 07:33:23,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:23,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 944 transitions. [2023-08-25 07:33:23,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:23,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:23,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:23,106 INFO L175 Difference]: Start difference. First operand has 110 places, 113 transitions, 230 flow. Second operand 3 states and 944 transitions. [2023-08-25 07:33:23,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 166 transitions, 569 flow [2023-08-25 07:33:23,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 569 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:33:23,111 INFO L231 Difference]: Finished difference. Result has 114 places, 117 transitions, 264 flow [2023-08-25 07:33:23,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=114, PETRI_TRANSITIONS=117} [2023-08-25 07:33:23,112 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -8 predicate places. [2023-08-25 07:33:23,113 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 117 transitions, 264 flow [2023-08-25 07:33:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:23,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:23,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:23,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:33:23,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:23,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:23,119 INFO L85 PathProgramCache]: Analyzing trace with hash 754671748, now seen corresponding path program 1 times [2023-08-25 07:33:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:23,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172103663] [2023-08-25 07:33:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:23,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:23,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:23,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172103663] [2023-08-25 07:33:23,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172103663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:23,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:23,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386322141] [2023-08-25 07:33:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:23,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:23,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:23,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 547 [2023-08-25 07:33:23,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 117 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:23,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:23,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 547 [2023-08-25 07:33:23,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:24,145 INFO L124 PetriNetUnfolderBase]: 5325/10966 cut-off events. [2023-08-25 07:33:24,145 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2023-08-25 07:33:24,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19827 conditions, 10966 events. 5325/10966 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 87823 event pairs, 1571 based on Foata normal form. 0/8711 useless extension candidates. Maximal degree in co-relation 19822. Up to 4314 conditions per place. [2023-08-25 07:33:24,221 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 106 selfloop transitions, 4 changer transitions 0/166 dead transitions. [2023-08-25 07:33:24,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 166 transitions, 583 flow [2023-08-25 07:33:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:24,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 938 transitions. [2023-08-25 07:33:24,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5716026812918952 [2023-08-25 07:33:24,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 938 transitions. [2023-08-25 07:33:24,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 938 transitions. [2023-08-25 07:33:24,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:24,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 938 transitions. [2023-08-25 07:33:24,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:24,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:24,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:24,239 INFO L175 Difference]: Start difference. First operand has 114 places, 117 transitions, 264 flow. Second operand 3 states and 938 transitions. [2023-08-25 07:33:24,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 166 transitions, 583 flow [2023-08-25 07:33:24,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 166 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:33:24,244 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 290 flow [2023-08-25 07:33:24,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2023-08-25 07:33:24,245 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -6 predicate places. [2023-08-25 07:33:24,245 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 290 flow [2023-08-25 07:33:24,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:24,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:24,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:24,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:33:24,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:24,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash 600155968, now seen corresponding path program 1 times [2023-08-25 07:33:24,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:24,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343899080] [2023-08-25 07:33:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:24,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:24,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343899080] [2023-08-25 07:33:24,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343899080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:24,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:24,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:24,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604832533] [2023-08-25 07:33:24,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:24,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:24,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:24,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:24,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:24,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 547 [2023-08-25 07:33:24,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:24,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:24,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 547 [2023-08-25 07:33:24,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:25,376 INFO L124 PetriNetUnfolderBase]: 6446/13237 cut-off events. [2023-08-25 07:33:25,376 INFO L125 PetriNetUnfolderBase]: For 673/673 co-relation queries the response was YES. [2023-08-25 07:33:25,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24827 conditions, 13237 events. 6446/13237 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 104930 event pairs, 4473 based on Foata normal form. 0/10849 useless extension candidates. Maximal degree in co-relation 24821. Up to 9376 conditions per place. [2023-08-25 07:33:25,458 INFO L140 encePairwiseOnDemand]: 537/547 looper letters, 93 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2023-08-25 07:33:25,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 149 transitions, 560 flow [2023-08-25 07:33:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 888 transitions. [2023-08-25 07:33:25,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411334552102377 [2023-08-25 07:33:25,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 888 transitions. [2023-08-25 07:33:25,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 888 transitions. [2023-08-25 07:33:25,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:25,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 888 transitions. [2023-08-25 07:33:25,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:25,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:25,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:25,470 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 290 flow. Second operand 3 states and 888 transitions. [2023-08-25 07:33:25,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 149 transitions, 560 flow [2023-08-25 07:33:25,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 149 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:33:25,475 INFO L231 Difference]: Finished difference. Result has 114 places, 120 transitions, 308 flow [2023-08-25 07:33:25,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=114, PETRI_TRANSITIONS=120} [2023-08-25 07:33:25,476 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -8 predicate places. [2023-08-25 07:33:25,476 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 120 transitions, 308 flow [2023-08-25 07:33:25,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:25,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:25,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:33:25,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:25,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash 357109585, now seen corresponding path program 1 times [2023-08-25 07:33:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258257062] [2023-08-25 07:33:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258257062] [2023-08-25 07:33:25,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258257062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:25,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:25,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:33:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078398524] [2023-08-25 07:33:25,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:25,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:33:25,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:25,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:33:25,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:33:25,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 547 [2023-08-25 07:33:25,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 265.6666666666667) internal successors, (1594), 6 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:25,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:25,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 547 [2023-08-25 07:33:25,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:31,053 INFO L124 PetriNetUnfolderBase]: 44095/75726 cut-off events. [2023-08-25 07:33:31,053 INFO L125 PetriNetUnfolderBase]: For 9311/9311 co-relation queries the response was YES. [2023-08-25 07:33:31,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152389 conditions, 75726 events. 44095/75726 cut-off events. For 9311/9311 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 667242 event pairs, 14347 based on Foata normal form. 0/60517 useless extension candidates. Maximal degree in co-relation 152382. Up to 37242 conditions per place. [2023-08-25 07:33:31,691 INFO L140 encePairwiseOnDemand]: 540/547 looper letters, 305 selfloop transitions, 9 changer transitions 0/359 dead transitions. [2023-08-25 07:33:31,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 359 transitions, 1543 flow [2023-08-25 07:33:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:33:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:33:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1869 transitions. [2023-08-25 07:33:31,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694698354661791 [2023-08-25 07:33:31,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1869 transitions. [2023-08-25 07:33:31,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1869 transitions. [2023-08-25 07:33:31,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:31,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1869 transitions. [2023-08-25 07:33:31,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:31,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 547.0) internal successors, (3829), 7 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:31,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 547.0) internal successors, (3829), 7 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:31,708 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 308 flow. Second operand 6 states and 1869 transitions. [2023-08-25 07:33:31,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 359 transitions, 1543 flow [2023-08-25 07:33:31,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 359 transitions, 1509 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:33:31,777 INFO L231 Difference]: Finished difference. Result has 122 places, 128 transitions, 362 flow [2023-08-25 07:33:31,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=122, PETRI_TRANSITIONS=128} [2023-08-25 07:33:31,778 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2023-08-25 07:33:31,778 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 128 transitions, 362 flow [2023-08-25 07:33:31,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 265.6666666666667) internal successors, (1594), 6 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:31,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:31,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:31,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:33:31,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:31,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:31,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1224290978, now seen corresponding path program 1 times [2023-08-25 07:33:31,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:31,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039647503] [2023-08-25 07:33:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:31,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:31,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:31,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039647503] [2023-08-25 07:33:31,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039647503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:31,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:31,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:31,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443286207] [2023-08-25 07:33:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:31,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:31,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:31,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 547 [2023-08-25 07:33:31,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 128 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:31,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:31,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 547 [2023-08-25 07:33:31,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:34,293 INFO L124 PetriNetUnfolderBase]: 17479/38051 cut-off events. [2023-08-25 07:33:34,293 INFO L125 PetriNetUnfolderBase]: For 4701/4872 co-relation queries the response was YES. [2023-08-25 07:33:34,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74435 conditions, 38051 events. 17479/38051 cut-off events. For 4701/4872 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 375184 event pairs, 3190 based on Foata normal form. 0/31142 useless extension candidates. Maximal degree in co-relation 74424. Up to 27464 conditions per place. [2023-08-25 07:33:34,617 INFO L140 encePairwiseOnDemand]: 540/547 looper letters, 102 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-08-25 07:33:34,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 158 transitions, 645 flow [2023-08-25 07:33:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2023-08-25 07:33:34,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527117611212675 [2023-08-25 07:33:34,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2023-08-25 07:33:34,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2023-08-25 07:33:34,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:34,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2023-08-25 07:33:34,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:34,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:34,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:34,630 INFO L175 Difference]: Start difference. First operand has 122 places, 128 transitions, 362 flow. Second operand 3 states and 907 transitions. [2023-08-25 07:33:34,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 158 transitions, 645 flow [2023-08-25 07:33:34,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 158 transitions, 645 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:33:34,642 INFO L231 Difference]: Finished difference. Result has 120 places, 125 transitions, 366 flow [2023-08-25 07:33:34,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=120, PETRI_TRANSITIONS=125} [2023-08-25 07:33:34,646 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2023-08-25 07:33:34,646 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 125 transitions, 366 flow [2023-08-25 07:33:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:34,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:34,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:34,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:33:34,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err12ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:34,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash -277084686, now seen corresponding path program 1 times [2023-08-25 07:33:34,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:34,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14633300] [2023-08-25 07:33:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14633300] [2023-08-25 07:33:34,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14633300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:34,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:34,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:34,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708726190] [2023-08-25 07:33:34,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:34,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:34,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:34,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:34,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:34,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 547 [2023-08-25 07:33:34,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 125 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:34,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:34,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 547 [2023-08-25 07:33:34,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:38,086 INFO L124 PetriNetUnfolderBase]: 22038/48354 cut-off events. [2023-08-25 07:33:38,086 INFO L125 PetriNetUnfolderBase]: For 4697/5018 co-relation queries the response was YES. [2023-08-25 07:33:38,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95254 conditions, 48354 events. 22038/48354 cut-off events. For 4697/5018 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 494563 event pairs, 8741 based on Foata normal form. 0/39972 useless extension candidates. Maximal degree in co-relation 95242. Up to 26619 conditions per place. [2023-08-25 07:33:38,639 INFO L140 encePairwiseOnDemand]: 543/547 looper letters, 121 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2023-08-25 07:33:38,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 179 transitions, 756 flow [2023-08-25 07:33:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2023-08-25 07:33:38,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5624619134673979 [2023-08-25 07:33:38,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2023-08-25 07:33:38,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2023-08-25 07:33:38,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:38,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2023-08-25 07:33:38,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:38,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:38,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:38,647 INFO L175 Difference]: Start difference. First operand has 120 places, 125 transitions, 366 flow. Second operand 3 states and 923 transitions. [2023-08-25 07:33:38,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 179 transitions, 756 flow [2023-08-25 07:33:38,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 179 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:33:38,659 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 375 flow [2023-08-25 07:33:38,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=123, PETRI_TRANSITIONS=125} [2023-08-25 07:33:38,660 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 1 predicate places. [2023-08-25 07:33:38,660 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 375 flow [2023-08-25 07:33:38,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:38,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:38,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:38,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 07:33:38,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:38,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:38,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1510484137, now seen corresponding path program 1 times [2023-08-25 07:33:38,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:38,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254255718] [2023-08-25 07:33:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:38,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:38,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254255718] [2023-08-25 07:33:38,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254255718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:38,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:38,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364688521] [2023-08-25 07:33:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:38,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:38,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 547 [2023-08-25 07:33:38,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 125 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:38,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:38,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 547 [2023-08-25 07:33:38,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:44,546 INFO L124 PetriNetUnfolderBase]: 35218/76944 cut-off events. [2023-08-25 07:33:44,547 INFO L125 PetriNetUnfolderBase]: For 11304/11977 co-relation queries the response was YES. [2023-08-25 07:33:45,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154871 conditions, 76944 events. 35218/76944 cut-off events. For 11304/11977 co-relation queries the response was YES. Maximal size of possible extension queue 1780. Compared 856897 event pairs, 13721 based on Foata normal form. 0/63715 useless extension candidates. Maximal degree in co-relation 154857. Up to 31746 conditions per place. [2023-08-25 07:33:45,263 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 124 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2023-08-25 07:33:45,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 186 transitions, 804 flow [2023-08-25 07:33:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 955 transitions. [2023-08-25 07:33:45,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819622181596588 [2023-08-25 07:33:45,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 955 transitions. [2023-08-25 07:33:45,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 955 transitions. [2023-08-25 07:33:45,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:45,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 955 transitions. [2023-08-25 07:33:45,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:45,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:45,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:45,271 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 375 flow. Second operand 3 states and 955 transitions. [2023-08-25 07:33:45,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 186 transitions, 804 flow [2023-08-25 07:33:45,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 186 transitions, 802 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:33:45,287 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 407 flow [2023-08-25 07:33:45,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2023-08-25 07:33:45,288 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 4 predicate places. [2023-08-25 07:33:45,288 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 407 flow [2023-08-25 07:33:45,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:45,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:45,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:45,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 07:33:45,289 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:45,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash 419675062, now seen corresponding path program 1 times [2023-08-25 07:33:45,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:45,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619414422] [2023-08-25 07:33:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:45,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:45,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619414422] [2023-08-25 07:33:45,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619414422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:45,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:45,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:33:45,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728052980] [2023-08-25 07:33:45,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:45,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:45,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 547 [2023-08-25 07:33:45,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 407 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:45,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:45,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 547 [2023-08-25 07:33:45,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:33:51,316 INFO L124 PetriNetUnfolderBase]: 32641/73311 cut-off events. [2023-08-25 07:33:51,316 INFO L125 PetriNetUnfolderBase]: For 14785/15402 co-relation queries the response was YES. [2023-08-25 07:33:51,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153524 conditions, 73311 events. 32641/73311 cut-off events. For 14785/15402 co-relation queries the response was YES. Maximal size of possible extension queue 1731. Compared 830765 event pairs, 21504 based on Foata normal form. 1335/64395 useless extension candidates. Maximal degree in co-relation 153509. Up to 51284 conditions per place. [2023-08-25 07:33:51,847 INFO L140 encePairwiseOnDemand]: 544/547 looper letters, 101 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2023-08-25 07:33:51,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 166 transitions, 732 flow [2023-08-25 07:33:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:33:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:33:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-08-25 07:33:51,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612431444241316 [2023-08-25 07:33:51,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-08-25 07:33:51,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-08-25 07:33:51,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:33:51,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-08-25 07:33:51,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:51,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:51,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:51,855 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 407 flow. Second operand 3 states and 921 transitions. [2023-08-25 07:33:51,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 166 transitions, 732 flow [2023-08-25 07:33:51,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 166 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:33:51,917 INFO L231 Difference]: Finished difference. Result has 127 places, 131 transitions, 422 flow [2023-08-25 07:33:51,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=127, PETRI_TRANSITIONS=131} [2023-08-25 07:33:51,917 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 5 predicate places. [2023-08-25 07:33:51,917 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 131 transitions, 422 flow [2023-08-25 07:33:51,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:51,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:33:51,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:33:51,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 07:33:51,918 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err9ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:33:51,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:33:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash 419633102, now seen corresponding path program 1 times [2023-08-25 07:33:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:33:51,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263743534] [2023-08-25 07:33:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:33:51,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:33:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:33:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:33:51,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:33:51,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263743534] [2023-08-25 07:33:51,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263743534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:33:51,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:33:51,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:33:51,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593336720] [2023-08-25 07:33:51,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:33:51,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:33:51,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:33:51,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:33:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:33:51,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 547 [2023-08-25 07:33:51,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 131 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:33:51,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:33:51,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 547 [2023-08-25 07:33:51,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:34:01,014 INFO L124 PetriNetUnfolderBase]: 45793/104059 cut-off events. [2023-08-25 07:34:01,014 INFO L125 PetriNetUnfolderBase]: For 22911/23799 co-relation queries the response was YES. [2023-08-25 07:34:01,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217872 conditions, 104059 events. 45793/104059 cut-off events. For 22911/23799 co-relation queries the response was YES. Maximal size of possible extension queue 1972. Compared 1205422 event pairs, 24107 based on Foata normal form. 0/86926 useless extension candidates. Maximal degree in co-relation 217856. Up to 51516 conditions per place. [2023-08-25 07:34:01,870 INFO L140 encePairwiseOnDemand]: 543/547 looper letters, 116 selfloop transitions, 3 changer transitions 0/180 dead transitions. [2023-08-25 07:34:01,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 180 transitions, 807 flow [2023-08-25 07:34:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:34:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:34:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2023-08-25 07:34:01,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734308348567947 [2023-08-25 07:34:01,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2023-08-25 07:34:01,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2023-08-25 07:34:01,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:34:01,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2023-08-25 07:34:01,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:01,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:01,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:01,878 INFO L175 Difference]: Start difference. First operand has 127 places, 131 transitions, 422 flow. Second operand 3 states and 941 transitions. [2023-08-25 07:34:01,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 180 transitions, 807 flow [2023-08-25 07:34:01,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 180 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:34:01,996 INFO L231 Difference]: Finished difference. Result has 129 places, 132 transitions, 434 flow [2023-08-25 07:34:01,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=129, PETRI_TRANSITIONS=132} [2023-08-25 07:34:01,997 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 7 predicate places. [2023-08-25 07:34:01,997 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 132 transitions, 434 flow [2023-08-25 07:34:01,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:01,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:34:01,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:34:01,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 07:34:01,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err12ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:34:01,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:34:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2318903, now seen corresponding path program 1 times [2023-08-25 07:34:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:34:01,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125676855] [2023-08-25 07:34:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:34:01,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:34:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:34:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:34:02,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:34:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125676855] [2023-08-25 07:34:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125676855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:34:02,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:34:02,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:34:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040216700] [2023-08-25 07:34:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:34:02,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:34:02,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:34:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:34:02,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:34:02,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 547 [2023-08-25 07:34:02,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 132 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 275.5) internal successors, (1102), 4 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:02,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:34:02,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 547 [2023-08-25 07:34:02,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:34:08,954 INFO L124 PetriNetUnfolderBase]: 35295/79479 cut-off events. [2023-08-25 07:34:08,954 INFO L125 PetriNetUnfolderBase]: For 21187/21664 co-relation queries the response was YES. [2023-08-25 07:34:09,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172058 conditions, 79479 events. 35295/79479 cut-off events. For 21187/21664 co-relation queries the response was YES. Maximal size of possible extension queue 1560. Compared 881979 event pairs, 22785 based on Foata normal form. 0/67815 useless extension candidates. Maximal degree in co-relation 172041. Up to 56080 conditions per place. [2023-08-25 07:34:09,756 INFO L140 encePairwiseOnDemand]: 543/547 looper letters, 102 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2023-08-25 07:34:09,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 165 transitions, 759 flow [2023-08-25 07:34:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:34:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:34:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1174 transitions. [2023-08-25 07:34:09,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365630712979891 [2023-08-25 07:34:09,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1174 transitions. [2023-08-25 07:34:09,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1174 transitions. [2023-08-25 07:34:09,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:34:09,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1174 transitions. [2023-08-25 07:34:09,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.5) internal successors, (1174), 4 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:09,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:09,765 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:09,765 INFO L175 Difference]: Start difference. First operand has 129 places, 132 transitions, 434 flow. Second operand 4 states and 1174 transitions. [2023-08-25 07:34:09,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 165 transitions, 759 flow [2023-08-25 07:34:09,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 165 transitions, 755 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:34:09,842 INFO L231 Difference]: Finished difference. Result has 132 places, 133 transitions, 445 flow [2023-08-25 07:34:09,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=445, PETRI_PLACES=132, PETRI_TRANSITIONS=133} [2023-08-25 07:34:09,842 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 10 predicate places. [2023-08-25 07:34:09,842 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 133 transitions, 445 flow [2023-08-25 07:34:09,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.5) internal successors, (1102), 4 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:09,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:34:09,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:34:09,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 07:34:09,844 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:34:09,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:34:09,844 INFO L85 PathProgramCache]: Analyzing trace with hash 969704390, now seen corresponding path program 1 times [2023-08-25 07:34:09,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:34:09,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907921091] [2023-08-25 07:34:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:34:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:34:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:34:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:34:09,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:34:09,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907921091] [2023-08-25 07:34:09,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907921091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:34:09,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:34:09,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:34:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309579232] [2023-08-25 07:34:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:34:09,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:34:09,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:34:09,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:34:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:34:09,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 547 [2023-08-25 07:34:09,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 133 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:09,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:34:09,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 547 [2023-08-25 07:34:09,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:34:16,961 INFO L124 PetriNetUnfolderBase]: 36163/82471 cut-off events. [2023-08-25 07:34:16,962 INFO L125 PetriNetUnfolderBase]: For 24096/24772 co-relation queries the response was YES. [2023-08-25 07:34:17,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182064 conditions, 82471 events. 36163/82471 cut-off events. For 24096/24772 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 919505 event pairs, 20018 based on Foata normal form. 0/70122 useless extension candidates. Maximal degree in co-relation 182046. Up to 59066 conditions per place. [2023-08-25 07:34:17,598 INFO L140 encePairwiseOnDemand]: 543/547 looper letters, 122 selfloop transitions, 3 changer transitions 0/187 dead transitions. [2023-08-25 07:34:17,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 187 transitions, 875 flow [2023-08-25 07:34:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:34:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:34:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2023-08-25 07:34:17,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697745277269958 [2023-08-25 07:34:17,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2023-08-25 07:34:17,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2023-08-25 07:34:17,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:34:17,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2023-08-25 07:34:17,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:17,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:17,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:17,605 INFO L175 Difference]: Start difference. First operand has 132 places, 133 transitions, 445 flow. Second operand 3 states and 935 transitions. [2023-08-25 07:34:17,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 187 transitions, 875 flow [2023-08-25 07:34:17,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 187 transitions, 869 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:34:17,724 INFO L231 Difference]: Finished difference. Result has 133 places, 135 transitions, 460 flow [2023-08-25 07:34:17,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=133, PETRI_TRANSITIONS=135} [2023-08-25 07:34:17,725 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 11 predicate places. [2023-08-25 07:34:17,725 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 135 transitions, 460 flow [2023-08-25 07:34:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:17,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:34:17,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:34:17,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 07:34:17,726 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:34:17,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:34:17,727 INFO L85 PathProgramCache]: Analyzing trace with hash -407971825, now seen corresponding path program 1 times [2023-08-25 07:34:17,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:34:17,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490577867] [2023-08-25 07:34:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:34:17,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:34:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:34:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:34:18,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:34:18,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490577867] [2023-08-25 07:34:18,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490577867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:34:18,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:34:18,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:34:18,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109248080] [2023-08-25 07:34:18,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:34:18,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:34:18,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:34:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:34:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:34:18,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 547 [2023-08-25 07:34:18,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 135 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:18,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:34:18,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 547 [2023-08-25 07:34:18,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:34:37,935 INFO L124 PetriNetUnfolderBase]: 128293/220460 cut-off events. [2023-08-25 07:34:37,935 INFO L125 PetriNetUnfolderBase]: For 141394/141394 co-relation queries the response was YES. [2023-08-25 07:34:39,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568217 conditions, 220460 events. 128293/220460 cut-off events. For 141394/141394 co-relation queries the response was YES. Maximal size of possible extension queue 2964. Compared 2089314 event pairs, 75120 based on Foata normal form. 0/194805 useless extension candidates. Maximal degree in co-relation 568198. Up to 182453 conditions per place. [2023-08-25 07:34:40,050 INFO L140 encePairwiseOnDemand]: 538/547 looper letters, 126 selfloop transitions, 15 changer transitions 0/181 dead transitions. [2023-08-25 07:34:40,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 181 transitions, 912 flow [2023-08-25 07:34:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:34:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:34:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2023-08-25 07:34:40,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5313833028641073 [2023-08-25 07:34:40,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2023-08-25 07:34:40,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2023-08-25 07:34:40,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:34:40,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2023-08-25 07:34:40,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:40,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:40,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:40,055 INFO L175 Difference]: Start difference. First operand has 133 places, 135 transitions, 460 flow. Second operand 3 states and 872 transitions. [2023-08-25 07:34:40,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 181 transitions, 912 flow [2023-08-25 07:34:41,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 181 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:34:41,247 INFO L231 Difference]: Finished difference. Result has 136 places, 145 transitions, 581 flow [2023-08-25 07:34:41,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=581, PETRI_PLACES=136, PETRI_TRANSITIONS=145} [2023-08-25 07:34:41,248 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 14 predicate places. [2023-08-25 07:34:41,248 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 145 transitions, 581 flow [2023-08-25 07:34:41,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:41,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:34:41,249 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, 1, 1] [2023-08-25 07:34:41,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 07:34:41,249 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:34:41,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:34:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1348822574, now seen corresponding path program 1 times [2023-08-25 07:34:41,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:34:41,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849512769] [2023-08-25 07:34:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:34:41,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:34:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:34:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:34:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:34:41,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849512769] [2023-08-25 07:34:41,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849512769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:34:41,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:34:41,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:34:41,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999712565] [2023-08-25 07:34:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:34:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:34:41,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:34:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:34:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:34:41,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 547 [2023-08-25 07:34:41,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 145 transitions, 581 flow. Second operand has 5 states, 5 states have (on average 252.2) internal successors, (1261), 5 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:34:41,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:34:41,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 547 [2023-08-25 07:34:41,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:35:03,306 INFO L124 PetriNetUnfolderBase]: 127284/218439 cut-off events. [2023-08-25 07:35:03,307 INFO L125 PetriNetUnfolderBase]: For 227608/227608 co-relation queries the response was YES. [2023-08-25 07:35:04,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618292 conditions, 218439 events. 127284/218439 cut-off events. For 227608/227608 co-relation queries the response was YES. Maximal size of possible extension queue 2893. Compared 2063709 event pairs, 71153 based on Foata normal form. 1611/196184 useless extension candidates. Maximal degree in co-relation 618272. Up to 172425 conditions per place. [2023-08-25 07:35:05,355 INFO L140 encePairwiseOnDemand]: 541/547 looper letters, 138 selfloop transitions, 11 changer transitions 0/189 dead transitions. [2023-08-25 07:35:05,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 189 transitions, 1057 flow [2023-08-25 07:35:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:35:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:35:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1103 transitions. [2023-08-25 07:35:05,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041133455210237 [2023-08-25 07:35:05,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1103 transitions. [2023-08-25 07:35:05,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1103 transitions. [2023-08-25 07:35:05,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:35:05,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1103 transitions. [2023-08-25 07:35:05,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:05,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:05,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:05,362 INFO L175 Difference]: Start difference. First operand has 136 places, 145 transitions, 581 flow. Second operand 4 states and 1103 transitions. [2023-08-25 07:35:05,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 189 transitions, 1057 flow [2023-08-25 07:35:07,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 189 transitions, 1025 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:35:07,198 INFO L231 Difference]: Finished difference. Result has 139 places, 148 transitions, 614 flow [2023-08-25 07:35:07,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=614, PETRI_PLACES=139, PETRI_TRANSITIONS=148} [2023-08-25 07:35:07,199 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 17 predicate places. [2023-08-25 07:35:07,199 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 148 transitions, 614 flow [2023-08-25 07:35:07,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.2) internal successors, (1261), 5 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:07,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:35:07,199 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, 1, 1, 1] [2023-08-25 07:35:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 07:35:07,200 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:35:07,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:35:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -11009094, now seen corresponding path program 1 times [2023-08-25 07:35:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:35:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485959965] [2023-08-25 07:35:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:35:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:35:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:35:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:35:07,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:35:07,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485959965] [2023-08-25 07:35:07,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485959965] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:35:07,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547650869] [2023-08-25 07:35:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:35:07,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:35:07,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:35:07,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:35:07,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 07:35:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:35:07,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 07:35:07,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:35:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:35:07,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:35:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:35:07,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547650869] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:35:07,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:35:07,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-25 07:35:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326294406] [2023-08-25 07:35:07,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:35:07,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 07:35:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:35:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 07:35:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 07:35:07,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 547 [2023-08-25 07:35:07,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 148 transitions, 614 flow. Second operand has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:07,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:35:07,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 547 [2023-08-25 07:35:07,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:35:34,807 INFO L124 PetriNetUnfolderBase]: 123279/282251 cut-off events. [2023-08-25 07:35:34,807 INFO L125 PetriNetUnfolderBase]: For 258165/294826 co-relation queries the response was YES. [2023-08-25 07:35:36,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692111 conditions, 282251 events. 123279/282251 cut-off events. For 258165/294826 co-relation queries the response was YES. Maximal size of possible extension queue 4055. Compared 3673130 event pairs, 26118 based on Foata normal form. 3981/250755 useless extension candidates. Maximal degree in co-relation 692089. Up to 81756 conditions per place. [2023-08-25 07:35:37,437 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 285 selfloop transitions, 10 changer transitions 0/368 dead transitions. [2023-08-25 07:35:37,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 368 transitions, 2096 flow [2023-08-25 07:35:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:35:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:35:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1893 transitions. [2023-08-25 07:35:37,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576782449725777 [2023-08-25 07:35:37,441 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1893 transitions. [2023-08-25 07:35:37,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1893 transitions. [2023-08-25 07:35:37,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:35:37,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1893 transitions. [2023-08-25 07:35:37,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:37,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 547.0) internal successors, (3829), 7 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:37,447 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 547.0) internal successors, (3829), 7 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:37,447 INFO L175 Difference]: Start difference. First operand has 139 places, 148 transitions, 614 flow. Second operand 6 states and 1893 transitions. [2023-08-25 07:35:37,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 368 transitions, 2096 flow [2023-08-25 07:35:39,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 368 transitions, 2095 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:35:39,913 INFO L231 Difference]: Finished difference. Result has 147 places, 153 transitions, 676 flow [2023-08-25 07:35:39,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=676, PETRI_PLACES=147, PETRI_TRANSITIONS=153} [2023-08-25 07:35:39,913 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 25 predicate places. [2023-08-25 07:35:39,913 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 153 transitions, 676 flow [2023-08-25 07:35:39,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:39,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:35:39,914 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, 1, 1, 1, 1, 1] [2023-08-25 07:35:39,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 07:35:40,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 07:35:40,119 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:35:40,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:35:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash -407621640, now seen corresponding path program 1 times [2023-08-25 07:35:40,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:35:40,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201104963] [2023-08-25 07:35:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:35:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:35:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:35:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:35:40,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:35:40,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201104963] [2023-08-25 07:35:40,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201104963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:35:40,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:35:40,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-25 07:35:40,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170036960] [2023-08-25 07:35:40,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:35:40,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 07:35:40,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:35:40,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 07:35:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-25 07:35:40,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 547 [2023-08-25 07:35:40,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 153 transitions, 676 flow. Second operand has 8 states, 8 states have (on average 262.375) internal successors, (2099), 8 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:35:40,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:35:40,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 547 [2023-08-25 07:35:40,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:36:31,847 INFO L124 PetriNetUnfolderBase]: 264912/444012 cut-off events. [2023-08-25 07:36:31,847 INFO L125 PetriNetUnfolderBase]: For 460883/460883 co-relation queries the response was YES. [2023-08-25 07:36:34,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339037 conditions, 444012 events. 264912/444012 cut-off events. For 460883/460883 co-relation queries the response was YES. Maximal size of possible extension queue 5289. Compared 4556106 event pairs, 54587 based on Foata normal form. 11013/408465 useless extension candidates. Maximal degree in co-relation 1339012. Up to 146356 conditions per place. [2023-08-25 07:36:36,230 INFO L140 encePairwiseOnDemand]: 541/547 looper letters, 404 selfloop transitions, 15 changer transitions 0/461 dead transitions. [2023-08-25 07:36:36,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 461 transitions, 2900 flow [2023-08-25 07:36:36,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 07:36:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 07:36:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2098 transitions. [2023-08-25 07:36:36,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479237398798642 [2023-08-25 07:36:36,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2098 transitions. [2023-08-25 07:36:36,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2098 transitions. [2023-08-25 07:36:36,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:36:36,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2098 transitions. [2023-08-25 07:36:36,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 299.7142857142857) internal successors, (2098), 7 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:36:36,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 547.0) internal successors, (4376), 8 states have internal predecessors, (4376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:36:36,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 547.0) internal successors, (4376), 8 states have internal predecessors, (4376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:36:36,241 INFO L175 Difference]: Start difference. First operand has 147 places, 153 transitions, 676 flow. Second operand 7 states and 2098 transitions. [2023-08-25 07:36:36,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 461 transitions, 2900 flow