/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -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-ext/46_monabsex2_vs-b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 22:18:55,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 22:18:55,518 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 22:18:55,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 22:18:55,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 22:18:55,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 22:18:55,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 22:18:55,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 22:18:55,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 22:18:55,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 22:18:55,566 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 22:18:55,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 22:18:55,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 22:18:55,568 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 22:18:55,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 22:18:55,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 22:18:55,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 22:18:55,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 22:18:55,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 22:18:55,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 22:18:55,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 22:18:55,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 22:18:55,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 22:18:55,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 22:18:55,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 22:18:55,572 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 22:18:55,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 22:18:55,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:18:55,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 22:18:55,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 22:18:55,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 22:18:55,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 22:18:55,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 22:18:55,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 22:18:55,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 22:18:55,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 22:18:55,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 22:18:55,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 22:18:55,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 22:18:55,957 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 22:18:55,957 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 22:18:55,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs-b.i [2023-08-25 22:18:57,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 22:18:57,322 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 22:18:57,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs-b.i [2023-08-25 22:18:57,346 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778dfeb19/148fdd3935a242a0ab184aa6fbcf388b/FLAGb68bf7b4d [2023-08-25 22:18:57,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778dfeb19/148fdd3935a242a0ab184aa6fbcf388b [2023-08-25 22:18:57,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 22:18:57,361 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 22:18:57,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 22:18:57,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 22:18:57,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 22:18:57,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb158dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57, skipping insertion in model container [2023-08-25 22:18:57,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,413 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 22:18:57,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:18:57,649 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 22:18:57,684 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-25 22:18:57,686 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-25 22:18:57,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:18:57,755 INFO L206 MainTranslator]: Completed translation [2023-08-25 22:18:57,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57 WrapperNode [2023-08-25 22:18:57,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 22:18:57,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 22:18:57,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 22:18:57,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 22:18:57,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,811 INFO L138 Inliner]: procedures = 166, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-08-25 22:18:57,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 22:18:57,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 22:18:57,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 22:18:57,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 22:18:57,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 22:18:57,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 22:18:57,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 22:18:57,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 22:18:57,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (1/1) ... [2023-08-25 22:18:57,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:18:57,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:18:57,878 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 22:18:57,886 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 22:18:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-25 22:18:57,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-25 22:18:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 22:18:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 22:18:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 22:18:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 22:18:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 22:18:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 22:18:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 22:18:57,917 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 22:18:58,061 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 22:18:58,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 22:18:58,223 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 22:18:58,229 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 22:18:58,229 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-25 22:18:58,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:18:58 BoogieIcfgContainer [2023-08-25 22:18:58,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 22:18:58,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 22:18:58,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 22:18:58,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 22:18:58,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 10:18:57" (1/3) ... [2023-08-25 22:18:58,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e0c03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:18:58, skipping insertion in model container [2023-08-25 22:18:58,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:57" (2/3) ... [2023-08-25 22:18:58,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e0c03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:18:58, skipping insertion in model container [2023-08-25 22:18:58,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:18:58" (3/3) ... [2023-08-25 22:18:58,241 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs-b.i [2023-08-25 22:18:58,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 22:18:58,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-25 22:18:58,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 22:18:58,295 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:18:58,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 65 transitions, 135 flow [2023-08-25 22:18:58,363 INFO L124 PetriNetUnfolderBase]: 5/75 cut-off events. [2023-08-25 22:18:58,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:58,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-25 22:18:58,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 65 transitions, 135 flow [2023-08-25 22:18:58,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 65 transitions, 135 flow [2023-08-25 22:18:58,377 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:58,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 65 transitions, 135 flow [2023-08-25 22:18:58,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 65 transitions, 135 flow [2023-08-25 22:18:58,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 65 transitions, 135 flow [2023-08-25 22:18:58,458 INFO L124 PetriNetUnfolderBase]: 5/75 cut-off events. [2023-08-25 22:18:58,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:58,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-25 22:18:58,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 1014 [2023-08-25 22:19:00,480 INFO L134 LiptonReduction]: Checked pairs total: 835 [2023-08-25 22:19:00,480 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-25 22:19:00,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:19:00,498 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;@7753e0d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:19:00,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-25 22:19:00,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:19:00,501 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-25 22:19:00,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:00,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:00,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 22:19:00,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 22:19:00,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash 8867568, now seen corresponding path program 1 times [2023-08-25 22:19:00,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:00,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218183491] [2023-08-25 22:19:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:00,701 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 22:19:00,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218183491] [2023-08-25 22:19:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218183491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:00,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:00,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 22:19:00,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93051281] [2023-08-25 22:19:00,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:00,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:19:00,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:19:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:19:00,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 140 [2023-08-25 22:19:00,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 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 22:19:00,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:00,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 140 [2023-08-25 22:19:00,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:00,776 INFO L124 PetriNetUnfolderBase]: 4/18 cut-off events. [2023-08-25 22:19:00,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:00,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 18 events. 4/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 4 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 24. Up to 16 conditions per place. [2023-08-25 22:19:00,778 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 5 selfloop transitions, 0 changer transitions 1/7 dead transitions. [2023-08-25 22:19:00,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 31 flow [2023-08-25 22:19:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:19:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:19:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 130 transitions. [2023-08-25 22:19:00,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-25 22:19:00,794 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 130 transitions. [2023-08-25 22:19:00,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 130 transitions. [2023-08-25 22:19:00,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:00,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 130 transitions. [2023-08-25 22:19:00,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 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 22:19:00,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 22:19:00,809 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 22:19:00,811 INFO L175 Difference]: Start difference. First operand has 16 places, 13 transitions, 31 flow. Second operand 2 states and 130 transitions. [2023-08-25 22:19:00,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 31 flow [2023-08-25 22:19:00,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:19:00,816 INFO L231 Difference]: Finished difference. Result has 11 places, 6 transitions, 17 flow [2023-08-25 22:19:00,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2023-08-25 22:19:00,825 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -5 predicate places. [2023-08-25 22:19:00,825 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 17 flow [2023-08-25 22:19:00,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 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 22:19:00,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:00,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 22:19:00,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 22:19:00,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-08-25 22:19:00,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:00,827 INFO L85 PathProgramCache]: Analyzing trace with hash 8867596, now seen corresponding path program 1 times [2023-08-25 22:19:00,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:00,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845265394] [2023-08-25 22:19:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:00,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:00,985 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 22:19:00,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845265394] [2023-08-25 22:19:00,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845265394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:00,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:00,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 22:19:00,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11955122] [2023-08-25 22:19:00,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:00,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:00,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:00,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 140 [2023-08-25 22:19:00,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 6 transitions, 17 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 22:19:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:00,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 140 [2023-08-25 22:19:00,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:01,002 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-25 22:19:01,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:01,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 3/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-25 22:19:01,003 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2023-08-25 22:19:01,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 5 transitions, 23 flow [2023-08-25 22:19:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2023-08-25 22:19:01,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119047619047619 [2023-08-25 22:19:01,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 173 transitions. [2023-08-25 22:19:01,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 173 transitions. [2023-08-25 22:19:01,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:01,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 173 transitions. [2023-08-25 22:19:01,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 22:19:01,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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 22:19:01,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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 22:19:01,015 INFO L175 Difference]: Start difference. First operand has 11 places, 6 transitions, 17 flow. Second operand 3 states and 173 transitions. [2023-08-25 22:19:01,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 5 transitions, 23 flow [2023-08-25 22:19:01,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 5 transitions, 23 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:19:01,016 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-25 22:19:01,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-25 22:19:01,017 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -5 predicate places. [2023-08-25 22:19:01,017 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-25 22:19:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 22:19:01,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 12 remaining) [2023-08-25 22:19:01,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 12 remaining) [2023-08-25 22:19:01,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (9 of 12 remaining) [2023-08-25 22:19:01,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-08-25 22:19:01,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-25 22:19:01,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-25 22:19:01,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-25 22:19:01,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-25 22:19:01,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-25 22:19:01,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-25 22:19:01,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-25 22:19:01,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-25 22:19:01,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 22:19:01,034 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 22:19:01,036 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-25 22:19:01,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 65 transitions, 135 flow [2023-08-25 22:19:01,053 INFO L124 PetriNetUnfolderBase]: 5/75 cut-off events. [2023-08-25 22:19:01,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:01,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-25 22:19:01,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 65 transitions, 135 flow [2023-08-25 22:19:01,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 65 transitions, 135 flow [2023-08-25 22:19:01,055 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:19:01,055 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 65 transitions, 135 flow [2023-08-25 22:19:01,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 65 transitions, 135 flow [2023-08-25 22:19:01,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 65 transitions, 135 flow [2023-08-25 22:19:01,066 INFO L124 PetriNetUnfolderBase]: 5/75 cut-off events. [2023-08-25 22:19:01,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:01,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-25 22:19:01,068 INFO L119 LiptonReduction]: Number of co-enabled transitions 1014 [2023-08-25 22:19:02,613 INFO L134 LiptonReduction]: Checked pairs total: 907 [2023-08-25 22:19:02,613 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-25 22:19:02,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:19:02,619 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;@7753e0d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:19:02,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:19:02,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:19:02,627 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-25 22:19:02,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:02,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:02,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 22:19:02,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:19:02,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:02,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2094748055, now seen corresponding path program 1 times [2023-08-25 22:19:02,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:02,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382484265] [2023-08-25 22:19:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:02,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:19:02,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:19:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:19:02,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:19:02,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:19:02,684 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:19:02,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 22:19:02,684 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:19:02,685 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:19:02,685 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:19:02,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 22:19:02,700 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:19:02,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 222 flow [2023-08-25 22:19:02,720 INFO L124 PetriNetUnfolderBase]: 9/127 cut-off events. [2023-08-25 22:19:02,721 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:19:02,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 127 events. 9/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-25 22:19:02,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 105 transitions, 222 flow [2023-08-25 22:19:02,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 105 transitions, 222 flow [2023-08-25 22:19:02,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:19:02,724 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 105 transitions, 222 flow [2023-08-25 22:19:02,724 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 105 transitions, 222 flow [2023-08-25 22:19:02,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 222 flow [2023-08-25 22:19:02,736 INFO L124 PetriNetUnfolderBase]: 9/127 cut-off events. [2023-08-25 22:19:02,737 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:19:02,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 127 events. 9/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-25 22:19:02,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 5148 [2023-08-25 22:19:03,602 INFO L134 LiptonReduction]: Checked pairs total: 15025 [2023-08-25 22:19:03,602 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-25 22:19:03,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:19:03,608 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;@7753e0d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:19:03,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-25 22:19:03,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:19:03,613 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-25 22:19:03,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:03,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:03,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 22:19:03,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:03,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:03,614 INFO L85 PathProgramCache]: Analyzing trace with hash 561329229, now seen corresponding path program 1 times [2023-08-25 22:19:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255489836] [2023-08-25 22:19:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:03,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:03,660 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 22:19:03,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:03,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255489836] [2023-08-25 22:19:03,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255489836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:03,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:03,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:03,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158147879] [2023-08-25 22:19:03,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:03,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:03,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:03,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:03,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:03,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-08-25 22:19:03,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 22:19:03,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:03,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-08-25 22:19:03,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:03,851 INFO L124 PetriNetUnfolderBase]: 608/1316 cut-off events. [2023-08-25 22:19:03,851 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-25 22:19:03,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 1316 events. 608/1316 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8834 event pairs, 232 based on Foata normal form. 0/1018 useless extension candidates. Maximal degree in co-relation 1864. Up to 680 conditions per place. [2023-08-25 22:19:03,860 INFO L140 encePairwiseOnDemand]: 167/176 looper letters, 48 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-08-25 22:19:03,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 273 flow [2023-08-25 22:19:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-25 22:19:03,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814393939393939 [2023-08-25 22:19:03,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-25 22:19:03,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-25 22:19:03,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:03,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-25 22:19:03,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 22:19:03,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:03,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:03,866 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 112 flow. Second operand 3 states and 307 transitions. [2023-08-25 22:19:03,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 273 flow [2023-08-25 22:19:03,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 271 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 22:19:03,868 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 160 flow [2023-08-25 22:19:03,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-08-25 22:19:03,869 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-25 22:19:03,869 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 160 flow [2023-08-25 22:19:03,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 22:19:03,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:03,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:03,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 22:19:03,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:03,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1728472816, now seen corresponding path program 1 times [2023-08-25 22:19:03,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776825554] [2023-08-25 22:19:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:03,891 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 22:19:03,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776825554] [2023-08-25 22:19:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776825554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:03,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:03,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873820852] [2023-08-25 22:19:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:03,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:03,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 176 [2023-08-25 22:19:03,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 22:19:03,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:03,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 176 [2023-08-25 22:19:03,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:04,016 INFO L124 PetriNetUnfolderBase]: 474/1123 cut-off events. [2023-08-25 22:19:04,017 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-25 22:19:04,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1123 events. 474/1123 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7639 event pairs, 370 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1092. Up to 743 conditions per place. [2023-08-25 22:19:04,025 INFO L140 encePairwiseOnDemand]: 173/176 looper letters, 37 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-25 22:19:04,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 67 transitions, 273 flow [2023-08-25 22:19:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-25 22:19:04,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2023-08-25 22:19:04,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-25 22:19:04,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-25 22:19:04,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:04,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-25 22:19:04,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 22:19:04,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:04,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:04,030 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 160 flow. Second operand 3 states and 298 transitions. [2023-08-25 22:19:04,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 67 transitions, 273 flow [2023-08-25 22:19:04,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:04,034 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 160 flow [2023-08-25 22:19:04,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-25 22:19:04,035 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-08-25 22:19:04,035 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 160 flow [2023-08-25 22:19:04,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 22:19:04,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:04,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:04,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 22:19:04,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:04,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2043110510, now seen corresponding path program 1 times [2023-08-25 22:19:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:04,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420691726] [2023-08-25 22:19:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:04,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:04,062 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 22:19:04,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:04,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420691726] [2023-08-25 22:19:04,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420691726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:04,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:04,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:04,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473261902] [2023-08-25 22:19:04,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:04,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:04,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:04,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-25 22:19:04,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 22:19:04,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:04,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-25 22:19:04,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:04,290 INFO L124 PetriNetUnfolderBase]: 951/1886 cut-off events. [2023-08-25 22:19:04,290 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2023-08-25 22:19:04,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3956 conditions, 1886 events. 951/1886 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13313 event pairs, 425 based on Foata normal form. 0/1597 useless extension candidates. Maximal degree in co-relation 2134. Up to 872 conditions per place. [2023-08-25 22:19:04,301 INFO L140 encePairwiseOnDemand]: 162/176 looper letters, 56 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2023-08-25 22:19:04,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 85 transitions, 373 flow [2023-08-25 22:19:04,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-25 22:19:04,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-25 22:19:04,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-25 22:19:04,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-25 22:19:04,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:04,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-25 22:19:04,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 22:19:04,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:04,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:04,305 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 160 flow. Second operand 3 states and 297 transitions. [2023-08-25 22:19:04,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 85 transitions, 373 flow [2023-08-25 22:19:04,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:04,309 INFO L231 Difference]: Finished difference. Result has 60 places, 67 transitions, 258 flow [2023-08-25 22:19:04,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=60, PETRI_TRANSITIONS=67} [2023-08-25 22:19:04,310 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-08-25 22:19:04,310 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 67 transitions, 258 flow [2023-08-25 22:19:04,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 22:19:04,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:04,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:04,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 22:19:04,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:04,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -629129977, now seen corresponding path program 1 times [2023-08-25 22:19:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:04,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727921031] [2023-08-25 22:19:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:04,362 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 22:19:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727921031] [2023-08-25 22:19:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727921031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:04,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:04,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946252781] [2023-08-25 22:19:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:04,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:04,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:04,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-08-25 22:19:04,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 67 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 22:19:04,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:04,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-08-25 22:19:04,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:04,505 INFO L124 PetriNetUnfolderBase]: 410/972 cut-off events. [2023-08-25 22:19:04,506 INFO L125 PetriNetUnfolderBase]: For 461/489 co-relation queries the response was YES. [2023-08-25 22:19:04,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 972 events. 410/972 cut-off events. For 461/489 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6465 event pairs, 139 based on Foata normal form. 30/936 useless extension candidates. Maximal degree in co-relation 1092. Up to 446 conditions per place. [2023-08-25 22:19:04,513 INFO L140 encePairwiseOnDemand]: 168/176 looper letters, 53 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2023-08-25 22:19:04,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 466 flow [2023-08-25 22:19:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 22:19:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 22:19:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2023-08-25 22:19:04,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-08-25 22:19:04,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2023-08-25 22:19:04,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2023-08-25 22:19:04,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:04,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2023-08-25 22:19:04,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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 22:19:04,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 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 22:19:04,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 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 22:19:04,520 INFO L175 Difference]: Start difference. First operand has 60 places, 67 transitions, 258 flow. Second operand 5 states and 470 transitions. [2023-08-25 22:19:04,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 466 flow [2023-08-25 22:19:04,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 434 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:04,526 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 269 flow [2023-08-25 22:19:04,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2023-08-25 22:19:04,527 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-25 22:19:04,528 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 269 flow [2023-08-25 22:19:04,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 22:19:04,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:04,528 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:04,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 22:19:04,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:04,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:04,529 INFO L85 PathProgramCache]: Analyzing trace with hash -642913757, now seen corresponding path program 1 times [2023-08-25 22:19:04,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:04,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674494568] [2023-08-25 22:19:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:04,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:19:04,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:04,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674494568] [2023-08-25 22:19:04,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674494568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:04,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:04,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:04,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169410204] [2023-08-25 22:19:04,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:04,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:04,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:04,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 176 [2023-08-25 22:19:04,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 22:19:04,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:04,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 176 [2023-08-25 22:19:04,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:04,661 INFO L124 PetriNetUnfolderBase]: 347/866 cut-off events. [2023-08-25 22:19:04,661 INFO L125 PetriNetUnfolderBase]: For 582/603 co-relation queries the response was YES. [2023-08-25 22:19:04,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 866 events. 347/866 cut-off events. For 582/603 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5742 event pairs, 236 based on Foata normal form. 29/830 useless extension candidates. Maximal degree in co-relation 1683. Up to 571 conditions per place. [2023-08-25 22:19:04,667 INFO L140 encePairwiseOnDemand]: 173/176 looper letters, 42 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-25 22:19:04,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 400 flow [2023-08-25 22:19:04,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-25 22:19:04,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2023-08-25 22:19:04,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-25 22:19:04,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-25 22:19:04,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:04,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-25 22:19:04,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 22:19:04,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:04,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:04,671 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 269 flow. Second operand 3 states and 294 transitions. [2023-08-25 22:19:04,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 400 flow [2023-08-25 22:19:04,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 75 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:19:04,674 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 286 flow [2023-08-25 22:19:04,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-25 22:19:04,675 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-08-25 22:19:04,675 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 286 flow [2023-08-25 22:19:04,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 22:19:04,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:04,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:04,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 22:19:04,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:04,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:04,676 INFO L85 PathProgramCache]: Analyzing trace with hash -489756016, now seen corresponding path program 1 times [2023-08-25 22:19:04,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:04,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549304583] [2023-08-25 22:19:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:04,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:04,694 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 22:19:04,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:04,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549304583] [2023-08-25 22:19:04,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549304583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:04,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:04,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:04,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007103354] [2023-08-25 22:19:04,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:04,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:04,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:04,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:04,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:04,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 176 [2023-08-25 22:19:04,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 22:19:04,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:04,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 176 [2023-08-25 22:19:04,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:04,835 INFO L124 PetriNetUnfolderBase]: 565/1192 cut-off events. [2023-08-25 22:19:04,835 INFO L125 PetriNetUnfolderBase]: For 843/854 co-relation queries the response was YES. [2023-08-25 22:19:04,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 1192 events. 565/1192 cut-off events. For 843/854 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7883 event pairs, 396 based on Foata normal form. 11/1112 useless extension candidates. Maximal degree in co-relation 2604. Up to 937 conditions per place. [2023-08-25 22:19:04,843 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 57 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-08-25 22:19:04,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 470 flow [2023-08-25 22:19:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-25 22:19:04,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-08-25 22:19:04,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-25 22:19:04,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-25 22:19:04,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:04,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-25 22:19:04,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 22:19:04,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:04,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:04,847 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 286 flow. Second operand 3 states and 272 transitions. [2023-08-25 22:19:04,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 470 flow [2023-08-25 22:19:04,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 82 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:04,852 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 327 flow [2023-08-25 22:19:04,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2023-08-25 22:19:04,852 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2023-08-25 22:19:04,852 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 327 flow [2023-08-25 22:19:04,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 22:19:04,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:04,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:04,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 22:19:04,853 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:04,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:04,854 INFO L85 PathProgramCache]: Analyzing trace with hash -316245823, now seen corresponding path program 1 times [2023-08-25 22:19:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:04,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287079666] [2023-08-25 22:19:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:04,871 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 22:19:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287079666] [2023-08-25 22:19:04,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287079666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:04,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:04,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:04,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191733304] [2023-08-25 22:19:04,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:04,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:04,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-08-25 22:19:04,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 22:19:04,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:04,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-08-25 22:19:04,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:05,052 INFO L124 PetriNetUnfolderBase]: 579/1211 cut-off events. [2023-08-25 22:19:05,052 INFO L125 PetriNetUnfolderBase]: For 1259/1317 co-relation queries the response was YES. [2023-08-25 22:19:05,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 1211 events. 579/1211 cut-off events. For 1259/1317 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7828 event pairs, 361 based on Foata normal form. 16/1064 useless extension candidates. Maximal degree in co-relation 2727. Up to 922 conditions per place. [2023-08-25 22:19:05,059 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 61 selfloop transitions, 6 changer transitions 1/89 dead transitions. [2023-08-25 22:19:05,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 542 flow [2023-08-25 22:19:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-08-25 22:19:05,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-08-25 22:19:05,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-08-25 22:19:05,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-08-25 22:19:05,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:05,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-08-25 22:19:05,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 22:19:05,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:05,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:05,063 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 327 flow. Second operand 3 states and 288 transitions. [2023-08-25 22:19:05,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 542 flow [2023-08-25 22:19:05,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:05,069 INFO L231 Difference]: Finished difference. Result has 70 places, 75 transitions, 363 flow [2023-08-25 22:19:05,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=70, PETRI_TRANSITIONS=75} [2023-08-25 22:19:05,069 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2023-08-25 22:19:05,070 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 75 transitions, 363 flow [2023-08-25 22:19:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 22:19:05,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:05,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:05,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 22:19:05,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:05,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 532801766, now seen corresponding path program 1 times [2023-08-25 22:19:05,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:05,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463926114] [2023-08-25 22:19:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:05,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:19:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463926114] [2023-08-25 22:19:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463926114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:05,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:05,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:05,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152212336] [2023-08-25 22:19:05,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:05,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:05,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 176 [2023-08-25 22:19:05,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 75 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 22:19:05,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:05,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 176 [2023-08-25 22:19:05,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:05,238 INFO L124 PetriNetUnfolderBase]: 602/1251 cut-off events. [2023-08-25 22:19:05,239 INFO L125 PetriNetUnfolderBase]: For 1164/1215 co-relation queries the response was YES. [2023-08-25 22:19:05,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 1251 events. 602/1251 cut-off events. For 1164/1215 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8265 event pairs, 328 based on Foata normal form. 31/1209 useless extension candidates. Maximal degree in co-relation 3132. Up to 915 conditions per place. [2023-08-25 22:19:05,248 INFO L140 encePairwiseOnDemand]: 170/176 looper letters, 63 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-25 22:19:05,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 596 flow [2023-08-25 22:19:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:05,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:05,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-25 22:19:05,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132575757575758 [2023-08-25 22:19:05,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-25 22:19:05,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-25 22:19:05,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:05,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-25 22:19:05,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 22:19:05,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:05,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:05,252 INFO L175 Difference]: Start difference. First operand has 70 places, 75 transitions, 363 flow. Second operand 3 states and 271 transitions. [2023-08-25 22:19:05,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 596 flow [2023-08-25 22:19:05,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:05,258 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 448 flow [2023-08-25 22:19:05,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2023-08-25 22:19:05,258 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-08-25 22:19:05,258 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 448 flow [2023-08-25 22:19:05,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 22:19:05,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:05,259 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:05,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 22:19:05,259 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:05,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1501178461, now seen corresponding path program 1 times [2023-08-25 22:19:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:05,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142422908] [2023-08-25 22:19:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:19:05,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:05,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142422908] [2023-08-25 22:19:05,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142422908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:05,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:05,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14980806] [2023-08-25 22:19:05,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:05,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:05,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:05,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:05,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-08-25 22:19:05,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 22:19:05,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:05,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-08-25 22:19:05,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:05,435 INFO L124 PetriNetUnfolderBase]: 599/1251 cut-off events. [2023-08-25 22:19:05,435 INFO L125 PetriNetUnfolderBase]: For 2140/2222 co-relation queries the response was YES. [2023-08-25 22:19:05,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3975 conditions, 1251 events. 599/1251 cut-off events. For 2140/2222 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8105 event pairs, 325 based on Foata normal form. 28/1186 useless extension candidates. Maximal degree in co-relation 3255. Up to 936 conditions per place. [2023-08-25 22:19:05,444 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 68 selfloop transitions, 7 changer transitions 3/100 dead transitions. [2023-08-25 22:19:05,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 100 transitions, 702 flow [2023-08-25 22:19:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:05,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-08-25 22:19:05,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-08-25 22:19:05,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-08-25 22:19:05,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-08-25 22:19:05,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:05,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-08-25 22:19:05,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 22:19:05,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:05,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:19:05,448 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 448 flow. Second operand 3 states and 288 transitions. [2023-08-25 22:19:05,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 100 transitions, 702 flow [2023-08-25 22:19:05,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 100 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:05,455 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 461 flow [2023-08-25 22:19:05,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-25 22:19:05,456 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-08-25 22:19:05,456 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 461 flow [2023-08-25 22:19:05,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 22:19:05,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:05,457 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:05,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 22:19:05,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-25 22:19:05,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1002395779, now seen corresponding path program 1 times [2023-08-25 22:19:05,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:05,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317234772] [2023-08-25 22:19:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:19:05,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:19:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:19:05,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:19:05,483 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:19:05,483 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 18 remaining) [2023-08-25 22:19:05,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-08-25 22:19:05,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-08-25 22:19:05,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (14 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (13 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (7 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-08-25 22:19:05,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-08-25 22:19:05,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-08-25 22:19:05,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-08-25 22:19:05,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-08-25 22:19:05,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-08-25 22:19:05,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-08-25 22:19:05,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 22:19:05,485 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:05,486 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-25 22:19:05,487 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-25 22:19:05,488 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 22:19:05,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 10:19:05 BasicIcfg [2023-08-25 22:19:05,517 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 22:19:05,517 INFO L158 Benchmark]: Toolchain (without parser) took 8155.88ms. Allocated memory was 354.4MB in the beginning and 434.1MB in the end (delta: 79.7MB). Free memory was 329.4MB in the beginning and 251.4MB in the end (delta: 78.0MB). Peak memory consumption was 158.2MB. Max. memory is 16.0GB. [2023-08-25 22:19:05,517 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 354.4MB. Free memory is still 330.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 22:19:05,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.17ms. Allocated memory is still 354.4MB. Free memory was 329.4MB in the beginning and 310.4MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 22:19:05,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.77ms. Allocated memory is still 354.4MB. Free memory was 310.4MB in the beginning and 308.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 22:19:05,518 INFO L158 Benchmark]: Boogie Preprocessor took 30.55ms. Allocated memory is still 354.4MB. Free memory was 308.4MB in the beginning and 307.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 22:19:05,518 INFO L158 Benchmark]: RCFGBuilder took 387.59ms. Allocated memory is still 354.4MB. Free memory was 307.0MB in the beginning and 295.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 22:19:05,518 INFO L158 Benchmark]: TraceAbstraction took 7283.51ms. Allocated memory was 354.4MB in the beginning and 434.1MB in the end (delta: 79.7MB). Free memory was 294.9MB in the beginning and 251.4MB in the end (delta: 43.5MB). Peak memory consumption was 124.6MB. Max. memory is 16.0GB. [2023-08-25 22:19:05,519 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 354.4MB. Free memory is still 330.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 394.17ms. Allocated memory is still 354.4MB. Free memory was 329.4MB in the beginning and 310.4MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.77ms. Allocated memory is still 354.4MB. Free memory was 310.4MB in the beginning and 308.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.55ms. Allocated memory is still 354.4MB. Free memory was 308.4MB in the beginning and 307.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 387.59ms. Allocated memory is still 354.4MB. Free memory was 307.0MB in the beginning and 295.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 7283.51ms. Allocated memory was 354.4MB in the beginning and 434.1MB in the end (delta: 79.7MB). Free memory was 294.9MB in the beginning and 251.4MB in the end (delta: 43.5MB). Peak memory consumption was 124.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 64 PlacesBefore, 16 PlacesAfterwards, 65 TransitionsBefore, 13 TransitionsAfterwards, 1014 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 75 TotalNumberOfCompositions, 835 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 835, independent: 835, independent conditional: 0, independent unconditional: 835, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 517, independent: 517, independent conditional: 0, independent unconditional: 517, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 835, independent: 318, independent conditional: 0, independent unconditional: 318, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 517, unknown conditional: 0, unknown unconditional: 517] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 64 PlacesBefore, 16 PlacesAfterwards, 65 TransitionsBefore, 13 TransitionsAfterwards, 1014 CoEnabledTransitionPairs, 7 FixpointIterations, 11 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 76 TotalNumberOfCompositions, 907 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 907, independent: 907, independent conditional: 0, independent unconditional: 907, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 517, independent: 517, independent conditional: 0, independent unconditional: 517, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 907, independent: 390, independent conditional: 0, independent unconditional: 390, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 517, unknown conditional: 0, unknown unconditional: 517] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 103 PlacesBefore, 53 PlacesAfterwards, 105 TransitionsBefore, 50 TransitionsAfterwards, 5148 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 71 TotalNumberOfCompositions, 15025 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8343, independent: 7978, independent conditional: 0, independent unconditional: 7978, dependent: 365, dependent conditional: 0, dependent unconditional: 365, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2639, independent: 2553, independent conditional: 0, independent unconditional: 2553, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8343, independent: 5425, independent conditional: 0, independent unconditional: 5425, dependent: 279, dependent conditional: 0, dependent unconditional: 279, unknown: 2639, unknown conditional: 0, unknown unconditional: 2639] , Statistics on independence cache: Total cache size (in pairs): 441, Positive cache size: 408, Positive conditional cache size: 0, Positive unconditional cache size: 408, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 689]: Data race detected Data race detected The following path leads to a data race: [L684] 0 _Bool s = 0; [L685] 0 _Bool l = 0; [L695] 0 pthread_t t; VAL [l=0, s=0, t={3:0}] [L696] COND TRUE 0 1 [L696] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [l=0, pthread_create(&t, 0, thr1, 0)=-1, s=0, t={3:0}] [L696] COND TRUE 0 1 [L688] EXPR 1 !l VAL [arg={0:0}, arg={0:0}, l=0, s=0] [L688] EXPR 1 !l || s VAL [!l || s=1, arg={0:0}, arg={0:0}, l=0, s=0] [L696] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [l=0, pthread_create(&t, 0, thr1, 0)=0, s=0, t={3:0}] [L688] COND FALSE 1 !(!(!l || s)) [L689] EXPR 1 s || 1 VAL [arg={0:0}, arg={0:0}, l=0, s=0] [L688] EXPR 2 !l VAL [arg={0:0}, arg={0:0}, l=0, s=0] [L688] EXPR 2 !l || s VAL [!l || s=1, arg={0:0}, arg={0:0}, l=0, s=0] [L688] COND FALSE 2 !(!(!l || s)) [L689] 2 s || 1 VAL [arg={0:0}, arg={0:0}, l=0, s=0] [L689] 1 s = s || 1 VAL [arg={0:0}, arg={0:0}, l=0, s = s || 1=51, s=1] [L689] 2 s || 1 VAL [arg={0:0}, arg={0:0}, l=0, s = s || 1=51, s=1] Now there is a data race on ~s~0 between C: s = s || 1 [689] and C: s || 1 [689] - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 688]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 688]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 689]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 99 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 136 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 583 IncrementalHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 48 mSDtfsCounter, 583 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=461occurred in iteration=9, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 99 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-25 22:19:05,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...