/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 INSUFFICIENT_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/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:23:22,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:23:22,206 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 21:23:22,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:23:22,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:23:22,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:23:22,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:23:22,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:23:22,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:23:22,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:23:22,241 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:23:22,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:23:22,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:23:22,242 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:23:22,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:23:22,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:23:22,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:23:22,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:23:22,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:23:22,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:23:22,244 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:23:22,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:23:22,244 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:23:22,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:23:22,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:23:22,245 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:23:22,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:23:22,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:23:22,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:23:22,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:23:22,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:23:22,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:23:22,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:23:22,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:23:22,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:23:22,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:23:22,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:23:22,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:23:22,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:23:22,495 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:23:22,495 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:23:22,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-25 21:23:23,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:23:23,584 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:23:23,584 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-25 21:23:23,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba0a7d89/41c38bbce39146d98afe648031d76e80/FLAG3e4e1f7f0 [2023-08-25 21:23:23,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba0a7d89/41c38bbce39146d98afe648031d76e80 [2023-08-25 21:23:23,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:23:23,607 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:23:23,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:23:23,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:23:23,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:23:23,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a401660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23, skipping insertion in model container [2023-08-25 21:23:23,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,630 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:23:23,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:23:23,769 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:23:23,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:23:23,804 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:23:23,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23 WrapperNode [2023-08-25 21:23:23,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:23:23,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:23:23,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:23:23,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:23:23,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,842 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 92 [2023-08-25 21:23:23,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:23:23,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:23:23,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:23:23,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:23:23,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:23:23,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:23:23,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:23:23,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:23:23,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (1/1) ... [2023-08-25 21:23:23,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:23:23,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:23,904 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 21:23:23,928 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 21:23:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:23:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:23:23,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:23:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:23:23,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:23:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:23:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:23:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:23:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:23:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:23:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:23:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:23:23,939 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 21:23:24,024 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:23:24,025 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:23:24,251 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:23:24,256 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:23:24,257 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 21:23:24,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:23:24 BoogieIcfgContainer [2023-08-25 21:23:24,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:23:24,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:23:24,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:23:24,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:23:24,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:23:23" (1/3) ... [2023-08-25 21:23:24,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c217913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:23:24, skipping insertion in model container [2023-08-25 21:23:24,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:23:23" (2/3) ... [2023-08-25 21:23:24,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c217913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:23:24, skipping insertion in model container [2023-08-25 21:23:24,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:23:24" (3/3) ... [2023-08-25 21:23:24,263 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-08-25 21:23:24,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:23:24,276 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-25 21:23:24,276 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:23:24,340 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:23:24,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 144 transitions, 304 flow [2023-08-25 21:23:24,407 INFO L124 PetriNetUnfolderBase]: 7/142 cut-off events. [2023-08-25 21:23:24,408 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:23:24,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 142 events. 7/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-08-25 21:23:24,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 144 transitions, 304 flow [2023-08-25 21:23:24,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 133 transitions, 278 flow [2023-08-25 21:23:24,438 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:23:24,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 133 transitions, 278 flow [2023-08-25 21:23:24,447 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 133 transitions, 278 flow [2023-08-25 21:23:24,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 133 transitions, 278 flow [2023-08-25 21:23:24,484 INFO L124 PetriNetUnfolderBase]: 7/133 cut-off events. [2023-08-25 21:23:24,484 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:23:24,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 7/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-08-25 21:23:24,486 INFO L119 LiptonReduction]: Number of co-enabled transitions 1976 [2023-08-25 21:23:27,379 INFO L134 LiptonReduction]: Checked pairs total: 2069 [2023-08-25 21:23:27,379 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-25 21:23:27,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:23:27,392 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;@51ca76b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:23:27,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-25 21:23:27,393 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:23:27,393 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:23:27,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:23:27,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:27,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:23:27,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:27,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash 549, now seen corresponding path program 1 times [2023-08-25 21:23:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:27,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139264238] [2023-08-25 21:23:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:27,456 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 21:23:27,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139264238] [2023-08-25 21:23:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139264238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:27,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:23:27,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:23:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651303856] [2023-08-25 21:23:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:23:27,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:27,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:23:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:23:27,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 313 [2023-08-25 21:23:27,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 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 21:23:27,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:27,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 313 [2023-08-25 21:23:27,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:27,506 INFO L124 PetriNetUnfolderBase]: 21/40 cut-off events. [2023-08-25 21:23:27,506 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 21:23:27,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 40 events. 21/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 60. Up to 41 conditions per place. [2023-08-25 21:23:27,507 INFO L140 encePairwiseOnDemand]: 298/313 looper letters, 13 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-08-25 21:23:27,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 64 flow [2023-08-25 21:23:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:23:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:23:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 298 transitions. [2023-08-25 21:23:27,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476038338658147 [2023-08-25 21:23:27,523 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 298 transitions. [2023-08-25 21:23:27,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 298 transitions. [2023-08-25 21:23:27,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:27,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 298 transitions. [2023-08-25 21:23:27,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.0) internal successors, (298), 2 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 21:23:27,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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 21:23:27,534 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 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 21:23:27,535 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 68 flow. Second operand 2 states and 298 transitions. [2023-08-25 21:23:27,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 64 flow [2023-08-25 21:23:27,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:23:27,538 INFO L231 Difference]: Finished difference. Result has 15 places, 13 transitions, 30 flow [2023-08-25 21:23:27,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=13} [2023-08-25 21:23:27,542 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -18 predicate places. [2023-08-25 21:23:27,542 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 13 transitions, 30 flow [2023-08-25 21:23:27,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 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 21:23:27,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:27,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:27,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:23:27,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:27,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:27,543 INFO L85 PathProgramCache]: Analyzing trace with hash 397207376, now seen corresponding path program 1 times [2023-08-25 21:23:27,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:27,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296617110] [2023-08-25 21:23:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:27,744 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 21:23:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296617110] [2023-08-25 21:23:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296617110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:27,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:23:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 21:23:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099185109] [2023-08-25 21:23:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:27,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:23:27,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:27,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:23:27,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:23:27,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:27,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 21:23:27,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:27,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:27,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:27,769 INFO L124 PetriNetUnfolderBase]: 41/77 cut-off events. [2023-08-25 21:23:27,770 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 21:23:27,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 77 events. 41/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 159. Up to 51 conditions per place. [2023-08-25 21:23:27,770 INFO L140 encePairwiseOnDemand]: 309/313 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-08-25 21:23:27,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 23 transitions, 99 flow [2023-08-25 21:23:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:23:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:23:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-25 21:23:27,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40894568690095845 [2023-08-25 21:23:27,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-25 21:23:27,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-25 21:23:27,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:27,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-25 21:23:27,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 21:23:27,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 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 21:23:27,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 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 21:23:27,775 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 30 flow. Second operand 3 states and 384 transitions. [2023-08-25 21:23:27,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 23 transitions, 99 flow [2023-08-25 21:23:27,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:23:27,776 INFO L231 Difference]: Finished difference. Result has 18 places, 15 transitions, 49 flow [2023-08-25 21:23:27,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=18, PETRI_TRANSITIONS=15} [2023-08-25 21:23:27,776 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -15 predicate places. [2023-08-25 21:23:27,777 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 49 flow [2023-08-25 21:23:27,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 21:23:27,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:27,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:27,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:23:27,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:27,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:27,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1423903900, now seen corresponding path program 1 times [2023-08-25 21:23:27,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:27,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835097756] [2023-08-25 21:23:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:27,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:27,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:27,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835097756] [2023-08-25 21:23:27,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835097756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:27,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:23:27,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:23:27,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341226319] [2023-08-25 21:23:27,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:27,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:23:27,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:27,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:23:27,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:23:27,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:27,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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 21:23:27,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:27,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:27,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:27,903 INFO L124 PetriNetUnfolderBase]: 35/71 cut-off events. [2023-08-25 21:23:27,903 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-25 21:23:27,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 173. Up to 45 conditions per place. [2023-08-25 21:23:27,904 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2023-08-25 21:23:27,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 28 transitions, 135 flow [2023-08-25 21:23:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:23:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:23:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 510 transitions. [2023-08-25 21:23:27,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073482428115016 [2023-08-25 21:23:27,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 510 transitions. [2023-08-25 21:23:27,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 510 transitions. [2023-08-25 21:23:27,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:27,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 510 transitions. [2023-08-25 21:23:27,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 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 21:23:27,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 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 21:23:27,909 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 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 21:23:27,910 INFO L175 Difference]: Start difference. First operand has 18 places, 15 transitions, 49 flow. Second operand 4 states and 510 transitions. [2023-08-25 21:23:27,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 28 transitions, 135 flow [2023-08-25 21:23:27,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 28 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:23:27,911 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 59 flow [2023-08-25 21:23:27,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-25 21:23:27,912 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -12 predicate places. [2023-08-25 21:23:27,912 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 59 flow [2023-08-25 21:23:27,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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 21:23:27,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:27,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:27,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:23:27,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:27,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash 318577560, now seen corresponding path program 2 times [2023-08-25 21:23:27,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:27,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101442930] [2023-08-25 21:23:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:27,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:27,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101442930] [2023-08-25 21:23:27,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101442930] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:27,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843137373] [2023-08-25 21:23:27,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:23:27,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:27,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:27,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:28,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 21:23:28,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:23:28,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:28,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 21:23:28,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:28,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843137373] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:28,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 21:23:28,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-08-25 21:23:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364686772] [2023-08-25 21:23:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:28,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:23:28,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:28,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:23:28,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:23:28,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:28,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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 21:23:28,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:28,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:28,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:28,170 INFO L124 PetriNetUnfolderBase]: 40/79 cut-off events. [2023-08-25 21:23:28,171 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-25 21:23:28,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 79 events. 40/79 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 171 event pairs, 2 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 226. Up to 39 conditions per place. [2023-08-25 21:23:28,171 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-25 21:23:28,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 30 transitions, 165 flow [2023-08-25 21:23:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:23:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:23:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 510 transitions. [2023-08-25 21:23:28,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073482428115016 [2023-08-25 21:23:28,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 510 transitions. [2023-08-25 21:23:28,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 510 transitions. [2023-08-25 21:23:28,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:28,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 510 transitions. [2023-08-25 21:23:28,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 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 21:23:28,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 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 21:23:28,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 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 21:23:28,176 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 59 flow. Second operand 4 states and 510 transitions. [2023-08-25 21:23:28,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 30 transitions, 165 flow [2023-08-25 21:23:28,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 30 transitions, 155 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 21:23:28,178 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 88 flow [2023-08-25 21:23:28,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-25 21:23:28,178 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -10 predicate places. [2023-08-25 21:23:28,178 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 88 flow [2023-08-25 21:23:28,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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 21:23:28,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:28,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:28,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:28,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:28,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:28,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:28,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1923328183, now seen corresponding path program 1 times [2023-08-25 21:23:28,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:28,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591365880] [2023-08-25 21:23:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:28,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:28,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591365880] [2023-08-25 21:23:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591365880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660106822] [2023-08-25 21:23:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:28,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:28,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:28,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:28,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 21:23:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:28,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 21:23:28,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:28,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660106822] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:28,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 21:23:28,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-08-25 21:23:28,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971399383] [2023-08-25 21:23:28,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:28,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:23:28,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:28,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:23:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:23:28,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:28,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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 21:23:28,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:28,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:28,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:28,565 INFO L124 PetriNetUnfolderBase]: 48/99 cut-off events. [2023-08-25 21:23:28,565 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-25 21:23:28,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 99 events. 48/99 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 242 event pairs, 5 based on Foata normal form. 4/103 useless extension candidates. Maximal degree in co-relation 329. Up to 64 conditions per place. [2023-08-25 21:23:28,567 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-25 21:23:28,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 31 transitions, 196 flow [2023-08-25 21:23:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:23:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:23:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-08-25 21:23:28,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057507987220447 [2023-08-25 21:23:28,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-08-25 21:23:28,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-08-25 21:23:28,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:28,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-08-25 21:23:28,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:23:28,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 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 21:23:28,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 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 21:23:28,573 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 88 flow. Second operand 4 states and 508 transitions. [2023-08-25 21:23:28,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 31 transitions, 196 flow [2023-08-25 21:23:28,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:23:28,576 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 127 flow [2023-08-25 21:23:28,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-25 21:23:28,578 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-25 21:23:28,578 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 127 flow [2023-08-25 21:23:28,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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 21:23:28,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:28,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:28,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:28,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:28,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:28,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1973185195, now seen corresponding path program 1 times [2023-08-25 21:23:28,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:28,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901652005] [2023-08-25 21:23:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:28,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901652005] [2023-08-25 21:23:28,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901652005] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477264231] [2023-08-25 21:23:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:28,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:28,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:28,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:28,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 21:23:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:28,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:28,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:28,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477264231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:29,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:29,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 4 [2023-08-25 21:23:29,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732602000] [2023-08-25 21:23:29,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:29,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:23:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:29,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:23:29,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:23:29,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:29,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 123.16666666666667) internal successors, (739), 6 states have internal predecessors, (739), 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 21:23:29,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:29,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:29,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:29,104 INFO L124 PetriNetUnfolderBase]: 123/244 cut-off events. [2023-08-25 21:23:29,104 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2023-08-25 21:23:29,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 244 events. 123/244 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 908 event pairs, 14 based on Foata normal form. 14/258 useless extension candidates. Maximal degree in co-relation 937. Up to 95 conditions per place. [2023-08-25 21:23:29,107 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 44 selfloop transitions, 18 changer transitions 1/63 dead transitions. [2023-08-25 21:23:29,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 63 transitions, 455 flow [2023-08-25 21:23:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:23:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:23:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 771 transitions. [2023-08-25 21:23:29,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41054313099041534 [2023-08-25 21:23:29,109 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 771 transitions. [2023-08-25 21:23:29,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 771 transitions. [2023-08-25 21:23:29,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:29,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 771 transitions. [2023-08-25 21:23:29,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 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 21:23:29,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:29,113 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:29,113 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 127 flow. Second operand 6 states and 771 transitions. [2023-08-25 21:23:29,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 63 transitions, 455 flow [2023-08-25 21:23:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 63 transitions, 451 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-25 21:23:29,118 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 307 flow [2023-08-25 21:23:29,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-08-25 21:23:29,120 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-25 21:23:29,120 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 307 flow [2023-08-25 21:23:29,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.16666666666667) internal successors, (739), 6 states have internal predecessors, (739), 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 21:23:29,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:29,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:29,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 21:23:29,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:29,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:29,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:29,325 INFO L85 PathProgramCache]: Analyzing trace with hash 351148649, now seen corresponding path program 2 times [2023-08-25 21:23:29,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:29,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192102360] [2023-08-25 21:23:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:29,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:29,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192102360] [2023-08-25 21:23:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192102360] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:29,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960183479] [2023-08-25 21:23:29,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:23:29,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:29,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:29,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:29,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 21:23:29,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:23:29,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:29,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:29,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:29,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:29,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960183479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:29,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:29,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 3 [2023-08-25 21:23:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914459937] [2023-08-25 21:23:29,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:29,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 21:23:29,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 21:23:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 21:23:29,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:29,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 21:23:29,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:29,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:29,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:29,582 INFO L124 PetriNetUnfolderBase]: 175/348 cut-off events. [2023-08-25 21:23:29,583 INFO L125 PetriNetUnfolderBase]: For 1349/1349 co-relation queries the response was YES. [2023-08-25 21:23:29,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 348 events. 175/348 cut-off events. For 1349/1349 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1453 event pairs, 28 based on Foata normal form. 6/354 useless extension candidates. Maximal degree in co-relation 1661. Up to 242 conditions per place. [2023-08-25 21:23:29,585 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 53 selfloop transitions, 15 changer transitions 1/69 dead transitions. [2023-08-25 21:23:29,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 69 transitions, 647 flow [2023-08-25 21:23:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:23:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:23:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 642 transitions. [2023-08-25 21:23:29,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41022364217252394 [2023-08-25 21:23:29,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 642 transitions. [2023-08-25 21:23:29,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 642 transitions. [2023-08-25 21:23:29,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:29,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 642 transitions. [2023-08-25 21:23:29,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 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 21:23:29,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 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 21:23:29,589 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 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 21:23:29,589 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 307 flow. Second operand 5 states and 642 transitions. [2023-08-25 21:23:29,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 69 transitions, 647 flow [2023-08-25 21:23:29,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 613 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-25 21:23:29,593 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 433 flow [2023-08-25 21:23:29,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=433, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-25 21:23:29,593 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-25 21:23:29,593 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 433 flow [2023-08-25 21:23:29,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 21:23:29,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:29,594 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:29,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 21:23:29,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:29,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:29,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1019282872, now seen corresponding path program 3 times [2023-08-25 21:23:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938205978] [2023-08-25 21:23:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:29,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:29,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:29,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938205978] [2023-08-25 21:23:29,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938205978] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:29,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076789269] [2023-08-25 21:23:29,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:23:29,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:29,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:29,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:29,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 21:23:29,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:23:29,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:29,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 21:23:29,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:29,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:29,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076789269] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:29,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:29,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-25 21:23:29,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856659521] [2023-08-25 21:23:29,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:29,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:29,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:29,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 433 flow. Second operand has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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 21:23:29,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:29,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:29,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:30,101 INFO L124 PetriNetUnfolderBase]: 190/412 cut-off events. [2023-08-25 21:23:30,102 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2023-08-25 21:23:30,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2087 conditions, 412 events. 190/412 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2010 event pairs, 8 based on Foata normal form. 24/436 useless extension candidates. Maximal degree in co-relation 2069. Up to 174 conditions per place. [2023-08-25 21:23:30,104 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 60 selfloop transitions, 30 changer transitions 7/97 dead transitions. [2023-08-25 21:23:30,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 97 transitions, 976 flow [2023-08-25 21:23:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 21:23:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 21:23:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1138 transitions. [2023-08-25 21:23:30,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039758608448704 [2023-08-25 21:23:30,107 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1138 transitions. [2023-08-25 21:23:30,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1138 transitions. [2023-08-25 21:23:30,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:30,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1138 transitions. [2023-08-25 21:23:30,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.44444444444444) internal successors, (1138), 9 states have internal predecessors, (1138), 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 21:23:30,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 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 21:23:30,112 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 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 21:23:30,112 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 433 flow. Second operand 9 states and 1138 transitions. [2023-08-25 21:23:30,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 97 transitions, 976 flow [2023-08-25 21:23:30,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 97 transitions, 954 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-25 21:23:30,118 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 720 flow [2023-08-25 21:23:30,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=720, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-08-25 21:23:30,119 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-25 21:23:30,119 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 720 flow [2023-08-25 21:23:30,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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 21:23:30,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:30,119 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:30,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-25 21:23:30,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:30,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:30,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1790744440, now seen corresponding path program 4 times [2023-08-25 21:23:30,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:30,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096659532] [2023-08-25 21:23:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:30,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:30,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:30,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096659532] [2023-08-25 21:23:30,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096659532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:30,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131431375] [2023-08-25 21:23:30,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:23:30,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:30,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:30,370 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:30,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 21:23:30,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:23:30,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:30,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 21:23:30,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:30,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:30,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131431375] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:30,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:30,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2023-08-25 21:23:30,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479289401] [2023-08-25 21:23:30,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:30,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:30,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:30,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:30,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:30,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 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 21:23:30,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:30,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:30,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:30,628 INFO L124 PetriNetUnfolderBase]: 183/409 cut-off events. [2023-08-25 21:23:30,628 INFO L125 PetriNetUnfolderBase]: For 3046/3046 co-relation queries the response was YES. [2023-08-25 21:23:30,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 409 events. 183/409 cut-off events. For 3046/3046 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2019 event pairs, 8 based on Foata normal form. 4/413 useless extension candidates. Maximal degree in co-relation 2369. Up to 119 conditions per place. [2023-08-25 21:23:30,631 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 63 selfloop transitions, 45 changer transitions 0/108 dead transitions. [2023-08-25 21:23:30,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 108 transitions, 1241 flow [2023-08-25 21:23:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 21:23:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 21:23:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1388 transitions. [2023-08-25 21:23:30,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031367993029335 [2023-08-25 21:23:30,634 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1388 transitions. [2023-08-25 21:23:30,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1388 transitions. [2023-08-25 21:23:30,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:30,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1388 transitions. [2023-08-25 21:23:30,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.18181818181819) internal successors, (1388), 11 states have internal predecessors, (1388), 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 21:23:30,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:30,640 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:30,640 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 720 flow. Second operand 11 states and 1388 transitions. [2023-08-25 21:23:30,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 108 transitions, 1241 flow [2023-08-25 21:23:30,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 1140 flow, removed 49 selfloop flow, removed 1 redundant places. [2023-08-25 21:23:30,648 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 916 flow [2023-08-25 21:23:30,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=916, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2023-08-25 21:23:30,649 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-08-25 21:23:30,649 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 916 flow [2023-08-25 21:23:30,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 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 21:23:30,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:30,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:30,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:30,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:30,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:30,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:30,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1584193273, now seen corresponding path program 5 times [2023-08-25 21:23:30,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:30,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761183622] [2023-08-25 21:23:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:30,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:30,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761183622] [2023-08-25 21:23:30,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761183622] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:30,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539451280] [2023-08-25 21:23:30,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:23:30,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:30,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:30,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:30,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 21:23:30,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 21:23:30,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:30,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 21:23:30,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:30,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539451280] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:30,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:30,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2023-08-25 21:23:30,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160684738] [2023-08-25 21:23:30,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:30,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:30,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:30,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:30,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:30,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:30,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 916 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 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 21:23:30,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:30,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:30,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:31,079 INFO L124 PetriNetUnfolderBase]: 173/375 cut-off events. [2023-08-25 21:23:31,080 INFO L125 PetriNetUnfolderBase]: For 3068/3068 co-relation queries the response was YES. [2023-08-25 21:23:31,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 375 events. 173/375 cut-off events. For 3068/3068 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1745 event pairs, 10 based on Foata normal form. 4/379 useless extension candidates. Maximal degree in co-relation 2261. Up to 112 conditions per place. [2023-08-25 21:23:31,082 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 64 selfloop transitions, 25 changer transitions 6/95 dead transitions. [2023-08-25 21:23:31,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 1297 flow [2023-08-25 21:23:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:23:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:23:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1005 transitions. [2023-08-25 21:23:31,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013578274760383 [2023-08-25 21:23:31,084 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1005 transitions. [2023-08-25 21:23:31,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1005 transitions. [2023-08-25 21:23:31,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:31,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1005 transitions. [2023-08-25 21:23:31,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 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 21:23:31,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 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 21:23:31,089 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 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 21:23:31,089 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 916 flow. Second operand 8 states and 1005 transitions. [2023-08-25 21:23:31,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 1297 flow [2023-08-25 21:23:31,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 95 transitions, 1196 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-08-25 21:23:31,100 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 896 flow [2023-08-25 21:23:31,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=896, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-08-25 21:23:31,100 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2023-08-25 21:23:31,100 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 896 flow [2023-08-25 21:23:31,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 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 21:23:31,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:31,101 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:31,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:31,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:31,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:31,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash -456797180, now seen corresponding path program 6 times [2023-08-25 21:23:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:31,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918383852] [2023-08-25 21:23:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:31,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:31,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918383852] [2023-08-25 21:23:31,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918383852] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:31,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878678994] [2023-08-25 21:23:31,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:23:31,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:31,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:31,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:31,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 21:23:31,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 21:23:31,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:31,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 21:23:31,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:31,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:31,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878678994] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:31,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:31,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-25 21:23:31,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685060346] [2023-08-25 21:23:31,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:31,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:31,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:31,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:31,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:31,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 896 flow. Second operand has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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 21:23:31,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:31,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:31,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:31,588 INFO L124 PetriNetUnfolderBase]: 197/426 cut-off events. [2023-08-25 21:23:31,589 INFO L125 PetriNetUnfolderBase]: For 3368/3368 co-relation queries the response was YES. [2023-08-25 21:23:31,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 426 events. 197/426 cut-off events. For 3368/3368 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1973 event pairs, 10 based on Foata normal form. 10/436 useless extension candidates. Maximal degree in co-relation 2502. Up to 190 conditions per place. [2023-08-25 21:23:31,592 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 71 selfloop transitions, 48 changer transitions 0/119 dead transitions. [2023-08-25 21:23:31,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 1574 flow [2023-08-25 21:23:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 21:23:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 21:23:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1257 transitions. [2023-08-25 21:23:31,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40159744408945686 [2023-08-25 21:23:31,595 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1257 transitions. [2023-08-25 21:23:31,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1257 transitions. [2023-08-25 21:23:31,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:31,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1257 transitions. [2023-08-25 21:23:31,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.7) internal successors, (1257), 10 states have internal predecessors, (1257), 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 21:23:31,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:31,600 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:31,600 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 896 flow. Second operand 10 states and 1257 transitions. [2023-08-25 21:23:31,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 1574 flow [2023-08-25 21:23:31,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 1476 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-08-25 21:23:31,610 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 1320 flow [2023-08-25 21:23:31,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1320, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2023-08-25 21:23:31,611 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2023-08-25 21:23:31,611 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 1320 flow [2023-08-25 21:23:31,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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 21:23:31,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:31,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:31,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-25 21:23:31,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-25 21:23:31,819 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:31,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1141776649, now seen corresponding path program 7 times [2023-08-25 21:23:31,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:31,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170887129] [2023-08-25 21:23:31,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:31,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:31,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:31,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170887129] [2023-08-25 21:23:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170887129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:31,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655189230] [2023-08-25 21:23:31,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:23:31,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:31,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:31,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:31,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 21:23:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:31,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 21:23:31,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:31,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655189230] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:31,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:31,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-25 21:23:31,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768765834] [2023-08-25 21:23:31,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:31,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:31,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:31,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:31,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:31,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 1320 flow. Second operand has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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 21:23:31,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:31,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:31,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:32,086 INFO L124 PetriNetUnfolderBase]: 223/488 cut-off events. [2023-08-25 21:23:32,087 INFO L125 PetriNetUnfolderBase]: For 4311/4311 co-relation queries the response was YES. [2023-08-25 21:23:32,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3122 conditions, 488 events. 223/488 cut-off events. For 4311/4311 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2395 event pairs, 14 based on Foata normal form. 8/496 useless extension candidates. Maximal degree in co-relation 3087. Up to 167 conditions per place. [2023-08-25 21:23:32,090 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 87 selfloop transitions, 42 changer transitions 7/136 dead transitions. [2023-08-25 21:23:32,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 136 transitions, 2028 flow [2023-08-25 21:23:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 21:23:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 21:23:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1132 transitions. [2023-08-25 21:23:32,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40184593539226127 [2023-08-25 21:23:32,093 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1132 transitions. [2023-08-25 21:23:32,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1132 transitions. [2023-08-25 21:23:32,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:32,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1132 transitions. [2023-08-25 21:23:32,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.77777777777777) internal successors, (1132), 9 states have internal predecessors, (1132), 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 21:23:32,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 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 21:23:32,098 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 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 21:23:32,098 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 1320 flow. Second operand 9 states and 1132 transitions. [2023-08-25 21:23:32,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 136 transitions, 2028 flow [2023-08-25 21:23:32,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 1932 flow, removed 43 selfloop flow, removed 2 redundant places. [2023-08-25 21:23:32,112 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 1592 flow [2023-08-25 21:23:32,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1592, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2023-08-25 21:23:32,113 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 64 predicate places. [2023-08-25 21:23:32,113 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 1592 flow [2023-08-25 21:23:32,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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 21:23:32,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:32,113 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:32,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:32,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:32,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:32,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1164749256, now seen corresponding path program 8 times [2023-08-25 21:23:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:32,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093967142] [2023-08-25 21:23:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093967142] [2023-08-25 21:23:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093967142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577835294] [2023-08-25 21:23:32,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:23:32,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:32,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:32,376 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:32,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 21:23:32,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:23:32,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:32,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 21:23:32,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:32,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:32,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577835294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:32,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:32,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2023-08-25 21:23:32,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264312557] [2023-08-25 21:23:32,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:32,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:32,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:32,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:32,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 1592 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 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 21:23:32,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:32,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:32,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:32,585 INFO L124 PetriNetUnfolderBase]: 202/434 cut-off events. [2023-08-25 21:23:32,586 INFO L125 PetriNetUnfolderBase]: For 5027/5027 co-relation queries the response was YES. [2023-08-25 21:23:32,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2996 conditions, 434 events. 202/434 cut-off events. For 5027/5027 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2019 event pairs, 10 based on Foata normal form. 8/442 useless extension candidates. Maximal degree in co-relation 2957. Up to 168 conditions per place. [2023-08-25 21:23:32,589 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 80 selfloop transitions, 38 changer transitions 1/119 dead transitions. [2023-08-25 21:23:32,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 119 transitions, 1904 flow [2023-08-25 21:23:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:23:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:23:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1003 transitions. [2023-08-25 21:23:32,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005591054313099 [2023-08-25 21:23:32,591 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1003 transitions. [2023-08-25 21:23:32,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1003 transitions. [2023-08-25 21:23:32,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:32,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1003 transitions. [2023-08-25 21:23:32,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 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 21:23:32,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 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 21:23:32,595 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 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 21:23:32,595 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 1592 flow. Second operand 8 states and 1003 transitions. [2023-08-25 21:23:32,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 119 transitions, 1904 flow [2023-08-25 21:23:32,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 119 transitions, 1811 flow, removed 45 selfloop flow, removed 1 redundant places. [2023-08-25 21:23:32,609 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 1526 flow [2023-08-25 21:23:32,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1526, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2023-08-25 21:23:32,610 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2023-08-25 21:23:32,610 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 1526 flow [2023-08-25 21:23:32,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 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 21:23:32,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:32,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:32,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:32,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-25 21:23:32,815 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:32,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:32,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2103524937, now seen corresponding path program 9 times [2023-08-25 21:23:32,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:32,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037210417] [2023-08-25 21:23:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:32,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:32,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037210417] [2023-08-25 21:23:32,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037210417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:32,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390183214] [2023-08-25 21:23:32,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:23:32,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:32,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:32,850 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:32,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 21:23:32,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:23:32,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:32,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:32,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:32,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 21:23:32,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390183214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:32,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 21:23:32,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-25 21:23:32,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428579795] [2023-08-25 21:23:32,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:32,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:23:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:23:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-25 21:23:32,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:32,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 1526 flow. Second operand has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 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 21:23:32,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:32,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:32,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:33,071 INFO L124 PetriNetUnfolderBase]: 241/554 cut-off events. [2023-08-25 21:23:33,072 INFO L125 PetriNetUnfolderBase]: For 6497/6497 co-relation queries the response was YES. [2023-08-25 21:23:33,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 554 events. 241/554 cut-off events. For 6497/6497 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3047 event pairs, 19 based on Foata normal form. 12/566 useless extension candidates. Maximal degree in co-relation 3702. Up to 217 conditions per place. [2023-08-25 21:23:33,075 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 91 selfloop transitions, 17 changer transitions 35/143 dead transitions. [2023-08-25 21:23:33,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 143 transitions, 2235 flow [2023-08-25 21:23:33,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:23:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:23:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 760 transitions. [2023-08-25 21:23:33,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40468583599574015 [2023-08-25 21:23:33,077 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 760 transitions. [2023-08-25 21:23:33,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 760 transitions. [2023-08-25 21:23:33,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:33,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 760 transitions. [2023-08-25 21:23:33,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 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 21:23:33,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:33,080 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:33,081 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 1526 flow. Second operand 6 states and 760 transitions. [2023-08-25 21:23:33,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 143 transitions, 2235 flow [2023-08-25 21:23:33,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 143 transitions, 2178 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-25 21:23:33,099 INFO L231 Difference]: Finished difference. Result has 111 places, 85 transitions, 1325 flow [2023-08-25 21:23:33,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1325, PETRI_PLACES=111, PETRI_TRANSITIONS=85} [2023-08-25 21:23:33,100 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 78 predicate places. [2023-08-25 21:23:33,100 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 85 transitions, 1325 flow [2023-08-25 21:23:33,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 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 21:23:33,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:33,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:33,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:33,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-25 21:23:33,305 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:33,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:33,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2107028119, now seen corresponding path program 10 times [2023-08-25 21:23:33,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407958984] [2023-08-25 21:23:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:33,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407958984] [2023-08-25 21:23:33,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407958984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8791469] [2023-08-25 21:23:33,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:23:33,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:33,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:33,355 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:33,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 21:23:33,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:23:33,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:33,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 21:23:33,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:33,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:33,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8791469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:33,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:33,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2023-08-25 21:23:33,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140101100] [2023-08-25 21:23:33,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:33,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:33,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:33,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:33,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 85 transitions, 1325 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 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 21:23:33,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:33,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:33,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:33,628 INFO L124 PetriNetUnfolderBase]: 228/489 cut-off events. [2023-08-25 21:23:33,628 INFO L125 PetriNetUnfolderBase]: For 7653/7653 co-relation queries the response was YES. [2023-08-25 21:23:33,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 489 events. 228/489 cut-off events. For 7653/7653 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2391 event pairs, 12 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 3459. Up to 157 conditions per place. [2023-08-25 21:23:33,631 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 90 selfloop transitions, 51 changer transitions 0/141 dead transitions. [2023-08-25 21:23:33,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 141 transitions, 2103 flow [2023-08-25 21:23:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 21:23:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 21:23:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1390 transitions. [2023-08-25 21:23:33,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403717688062736 [2023-08-25 21:23:33,634 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1390 transitions. [2023-08-25 21:23:33,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1390 transitions. [2023-08-25 21:23:33,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:33,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1390 transitions. [2023-08-25 21:23:33,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.36363636363636) internal successors, (1390), 11 states have internal predecessors, (1390), 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 21:23:33,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:33,640 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:33,640 INFO L175 Difference]: Start difference. First operand has 111 places, 85 transitions, 1325 flow. Second operand 11 states and 1390 transitions. [2023-08-25 21:23:33,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 141 transitions, 2103 flow [2023-08-25 21:23:33,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 141 transitions, 2007 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-08-25 21:23:33,657 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 1661 flow [2023-08-25 21:23:33,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1661, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2023-08-25 21:23:33,657 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 84 predicate places. [2023-08-25 21:23:33,658 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 1661 flow [2023-08-25 21:23:33,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 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 21:23:33,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:33,658 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:33,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-25 21:23:33,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 21:23:33,862 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:33,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash 997872220, now seen corresponding path program 11 times [2023-08-25 21:23:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604687813] [2023-08-25 21:23:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:33,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:33,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604687813] [2023-08-25 21:23:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604687813] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644419061] [2023-08-25 21:23:33,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:23:33,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:33,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:33,951 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:33,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 21:23:34,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:23:34,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:34,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 21:23:34,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:34,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:34,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644419061] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:34,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:34,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2023-08-25 21:23:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726476500] [2023-08-25 21:23:34,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:34,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:34,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 1661 flow. Second operand has 9 states, 9 states have (on average 122.55555555555556) internal successors, (1103), 9 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:23:34,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:34,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:34,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:34,225 INFO L124 PetriNetUnfolderBase]: 430/879 cut-off events. [2023-08-25 21:23:34,225 INFO L125 PetriNetUnfolderBase]: For 21322/21322 co-relation queries the response was YES. [2023-08-25 21:23:34,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6912 conditions, 879 events. 430/879 cut-off events. For 21322/21322 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4893 event pairs, 58 based on Foata normal form. 38/917 useless extension candidates. Maximal degree in co-relation 6865. Up to 425 conditions per place. [2023-08-25 21:23:34,231 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 119 selfloop transitions, 60 changer transitions 7/186 dead transitions. [2023-08-25 21:23:34,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 186 transitions, 3286 flow [2023-08-25 21:23:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:23:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:23:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-25 21:23:34,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41094249201277955 [2023-08-25 21:23:34,234 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-25 21:23:34,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-25 21:23:34,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:34,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-25 21:23:34,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 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 21:23:34,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 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 21:23:34,238 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 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 21:23:34,238 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 1661 flow. Second operand 8 states and 1029 transitions. [2023-08-25 21:23:34,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 186 transitions, 3286 flow [2023-08-25 21:23:34,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 186 transitions, 3040 flow, removed 100 selfloop flow, removed 4 redundant places. [2023-08-25 21:23:34,273 INFO L231 Difference]: Finished difference. Result has 126 places, 138 transitions, 2486 flow [2023-08-25 21:23:34,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2486, PETRI_PLACES=126, PETRI_TRANSITIONS=138} [2023-08-25 21:23:34,274 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 93 predicate places. [2023-08-25 21:23:34,274 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 138 transitions, 2486 flow [2023-08-25 21:23:34,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.55555555555556) internal successors, (1103), 9 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:23:34,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:34,274 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:34,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 21:23:34,479 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:34,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1102336448, now seen corresponding path program 12 times [2023-08-25 21:23:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673503744] [2023-08-25 21:23:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:34,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:34,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673503744] [2023-08-25 21:23:34,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673503744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:34,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978208520] [2023-08-25 21:23:34,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:23:34,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:34,557 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:34,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 21:23:34,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 21:23:34,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:34,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 21:23:34,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:23:34,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:23:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978208520] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:34,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-08-25 21:23:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382365619] [2023-08-25 21:23:34,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:34,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:23:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:23:34,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:23:34,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:34,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 138 transitions, 2486 flow. Second operand has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 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 21:23:34,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:34,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:34,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:34,883 INFO L124 PetriNetUnfolderBase]: 538/1145 cut-off events. [2023-08-25 21:23:34,883 INFO L125 PetriNetUnfolderBase]: For 26539/26539 co-relation queries the response was YES. [2023-08-25 21:23:34,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9211 conditions, 1145 events. 538/1145 cut-off events. For 26539/26539 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7122 event pairs, 111 based on Foata normal form. 10/1155 useless extension candidates. Maximal degree in co-relation 9158. Up to 815 conditions per place. [2023-08-25 21:23:34,892 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 152 selfloop transitions, 52 changer transitions 6/210 dead transitions. [2023-08-25 21:23:34,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 210 transitions, 3954 flow [2023-08-25 21:23:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:23:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:23:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 773 transitions. [2023-08-25 21:23:34,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116080937167199 [2023-08-25 21:23:34,894 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 773 transitions. [2023-08-25 21:23:34,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 773 transitions. [2023-08-25 21:23:34,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:34,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 773 transitions. [2023-08-25 21:23:34,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 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 21:23:34,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:34,897 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:34,897 INFO L175 Difference]: Start difference. First operand has 126 places, 138 transitions, 2486 flow. Second operand 6 states and 773 transitions. [2023-08-25 21:23:34,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 210 transitions, 3954 flow [2023-08-25 21:23:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 210 transitions, 3814 flow, removed 70 selfloop flow, removed 0 redundant places. [2023-08-25 21:23:34,955 INFO L231 Difference]: Finished difference. Result has 135 places, 170 transitions, 3159 flow [2023-08-25 21:23:34,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3159, PETRI_PLACES=135, PETRI_TRANSITIONS=170} [2023-08-25 21:23:34,955 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2023-08-25 21:23:34,956 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 170 transitions, 3159 flow [2023-08-25 21:23:34,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 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 21:23:34,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:34,956 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:34,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:35,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:35,160 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:35,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1464946210, now seen corresponding path program 13 times [2023-08-25 21:23:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:35,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615171452] [2023-08-25 21:23:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:35,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:35,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615171452] [2023-08-25 21:23:35,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615171452] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:35,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105532480] [2023-08-25 21:23:35,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:23:35,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:35,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:35,237 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:35,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 21:23:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:35,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 21:23:35,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:35,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105532480] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:35,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:35,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2023-08-25 21:23:35,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771061549] [2023-08-25 21:23:35,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:35,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:23:35,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:23:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:23:35,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:35,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 170 transitions, 3159 flow. Second operand has 9 states, 9 states have (on average 122.22222222222223) internal successors, (1100), 9 states have internal predecessors, (1100), 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 21:23:35,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:35,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:35,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:35,569 INFO L124 PetriNetUnfolderBase]: 610/1293 cut-off events. [2023-08-25 21:23:35,569 INFO L125 PetriNetUnfolderBase]: For 32556/32556 co-relation queries the response was YES. [2023-08-25 21:23:35,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10894 conditions, 1293 events. 610/1293 cut-off events. For 32556/32556 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8201 event pairs, 123 based on Foata normal form. 14/1307 useless extension candidates. Maximal degree in co-relation 10836. Up to 1082 conditions per place. [2023-08-25 21:23:35,581 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 177 selfloop transitions, 44 changer transitions 5/226 dead transitions. [2023-08-25 21:23:35,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 226 transitions, 4541 flow [2023-08-25 21:23:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:23:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:23:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-08-25 21:23:35,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077476038338658 [2023-08-25 21:23:35,583 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-08-25 21:23:35,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-08-25 21:23:35,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:35,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-08-25 21:23:35,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 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 21:23:35,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 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 21:23:35,586 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 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 21:23:35,586 INFO L175 Difference]: Start difference. First operand has 135 places, 170 transitions, 3159 flow. Second operand 8 states and 1021 transitions. [2023-08-25 21:23:35,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 226 transitions, 4541 flow [2023-08-25 21:23:35,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 226 transitions, 4353 flow, removed 79 selfloop flow, removed 2 redundant places. [2023-08-25 21:23:35,652 INFO L231 Difference]: Finished difference. Result has 144 places, 193 transitions, 3709 flow [2023-08-25 21:23:35,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3709, PETRI_PLACES=144, PETRI_TRANSITIONS=193} [2023-08-25 21:23:35,652 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2023-08-25 21:23:35,652 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 193 transitions, 3709 flow [2023-08-25 21:23:35,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.22222222222223) internal successors, (1100), 9 states have internal predecessors, (1100), 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 21:23:35,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:35,653 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:35,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:35,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 21:23:35,859 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:35,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2061029717, now seen corresponding path program 14 times [2023-08-25 21:23:35,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288398013] [2023-08-25 21:23:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:35,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:35,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:35,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288398013] [2023-08-25 21:23:35,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288398013] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:35,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495180402] [2023-08-25 21:23:35,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:23:35,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:35,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:35,926 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:35,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 21:23:36,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:23:36,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:36,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:36,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:36,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:36,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495180402] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:36,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:36,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-25 21:23:36,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984819153] [2023-08-25 21:23:36,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:36,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:36,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:36,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:36,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 193 transitions, 3709 flow. Second operand has 12 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 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 21:23:36,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:36,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:36,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:36,391 INFO L124 PetriNetUnfolderBase]: 619/1389 cut-off events. [2023-08-25 21:23:36,391 INFO L125 PetriNetUnfolderBase]: For 42678/42678 co-relation queries the response was YES. [2023-08-25 21:23:36,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11750 conditions, 1389 events. 619/1389 cut-off events. For 42678/42678 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9424 event pairs, 32 based on Foata normal form. 56/1445 useless extension candidates. Maximal degree in co-relation 11686. Up to 424 conditions per place. [2023-08-25 21:23:36,402 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 132 selfloop transitions, 117 changer transitions 20/269 dead transitions. [2023-08-25 21:23:36,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 269 transitions, 5433 flow [2023-08-25 21:23:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 21:23:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 21:23:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1513 transitions. [2023-08-25 21:23:36,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40282215122470716 [2023-08-25 21:23:36,404 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1513 transitions. [2023-08-25 21:23:36,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1513 transitions. [2023-08-25 21:23:36,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:36,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1513 transitions. [2023-08-25 21:23:36,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.08333333333333) internal successors, (1513), 12 states have internal predecessors, (1513), 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 21:23:36,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 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 21:23:36,409 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 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 21:23:36,409 INFO L175 Difference]: Start difference. First operand has 144 places, 193 transitions, 3709 flow. Second operand 12 states and 1513 transitions. [2023-08-25 21:23:36,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 269 transitions, 5433 flow [2023-08-25 21:23:36,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 269 transitions, 5172 flow, removed 129 selfloop flow, removed 1 redundant places. [2023-08-25 21:23:36,487 INFO L231 Difference]: Finished difference. Result has 160 places, 209 transitions, 4503 flow [2023-08-25 21:23:36,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4503, PETRI_PLACES=160, PETRI_TRANSITIONS=209} [2023-08-25 21:23:36,487 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 127 predicate places. [2023-08-25 21:23:36,487 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 209 transitions, 4503 flow [2023-08-25 21:23:36,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 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 21:23:36,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:36,488 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:36,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-25 21:23:36,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:36,692 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:36,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:36,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1413337705, now seen corresponding path program 15 times [2023-08-25 21:23:36,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:36,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662320772] [2023-08-25 21:23:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:36,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:36,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:36,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662320772] [2023-08-25 21:23:36,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662320772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:36,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890251646] [2023-08-25 21:23:36,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:23:36,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:36,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:36,737 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:36,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 21:23:36,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 21:23:36,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:36,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:36,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 21:23:36,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 21:23:36,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890251646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:36,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 21:23:36,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-25 21:23:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534576664] [2023-08-25 21:23:36,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:36,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:23:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:23:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-08-25 21:23:36,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:36,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 209 transitions, 4503 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:36,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:36,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:36,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:37,116 INFO L124 PetriNetUnfolderBase]: 595/1319 cut-off events. [2023-08-25 21:23:37,117 INFO L125 PetriNetUnfolderBase]: For 43463/43463 co-relation queries the response was YES. [2023-08-25 21:23:37,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 1319 events. 595/1319 cut-off events. For 43463/43463 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8793 event pairs, 37 based on Foata normal form. 9/1328 useless extension candidates. Maximal degree in co-relation 11851. Up to 724 conditions per place. [2023-08-25 21:23:37,127 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 196 selfloop transitions, 36 changer transitions 25/257 dead transitions. [2023-08-25 21:23:37,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 257 transitions, 5863 flow [2023-08-25 21:23:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:23:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:23:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 758 transitions. [2023-08-25 21:23:37,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036208732694356 [2023-08-25 21:23:37,129 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 758 transitions. [2023-08-25 21:23:37,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 758 transitions. [2023-08-25 21:23:37,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:37,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 758 transitions. [2023-08-25 21:23:37,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 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 21:23:37,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:37,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:37,132 INFO L175 Difference]: Start difference. First operand has 160 places, 209 transitions, 4503 flow. Second operand 6 states and 758 transitions. [2023-08-25 21:23:37,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 257 transitions, 5863 flow [2023-08-25 21:23:37,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 257 transitions, 5336 flow, removed 262 selfloop flow, removed 1 redundant places. [2023-08-25 21:23:37,277 INFO L231 Difference]: Finished difference. Result has 168 places, 205 transitions, 4272 flow [2023-08-25 21:23:37,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=4096, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4272, PETRI_PLACES=168, PETRI_TRANSITIONS=205} [2023-08-25 21:23:37,278 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 135 predicate places. [2023-08-25 21:23:37,278 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 205 transitions, 4272 flow [2023-08-25 21:23:37,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:37,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:37,278 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:37,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:37,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:37,483 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:37,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1497751945, now seen corresponding path program 16 times [2023-08-25 21:23:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:37,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299853807] [2023-08-25 21:23:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:37,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:37,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299853807] [2023-08-25 21:23:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299853807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449903690] [2023-08-25 21:23:37,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:23:37,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:37,529 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:37,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 21:23:37,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:23:37,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:37,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:37,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:37,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:37,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449903690] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:37,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:37,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-25 21:23:37,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533230294] [2023-08-25 21:23:37,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:37,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:37,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:37,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:37,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 205 transitions, 4272 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:37,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:37,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:37,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:37,978 INFO L124 PetriNetUnfolderBase]: 551/1168 cut-off events. [2023-08-25 21:23:37,979 INFO L125 PetriNetUnfolderBase]: For 31381/31381 co-relation queries the response was YES. [2023-08-25 21:23:37,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 1168 events. 551/1168 cut-off events. For 31381/31381 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7207 event pairs, 40 based on Foata normal form. 4/1172 useless extension candidates. Maximal degree in co-relation 9910. Up to 359 conditions per place. [2023-08-25 21:23:37,988 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 110 selfloop transitions, 137 changer transitions 3/250 dead transitions. [2023-08-25 21:23:37,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 250 transitions, 5108 flow [2023-08-25 21:23:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 21:23:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 21:23:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1510 transitions. [2023-08-25 21:23:37,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020234291799787 [2023-08-25 21:23:37,990 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1510 transitions. [2023-08-25 21:23:37,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1510 transitions. [2023-08-25 21:23:37,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:37,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1510 transitions. [2023-08-25 21:23:37,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.83333333333333) internal successors, (1510), 12 states have internal predecessors, (1510), 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 21:23:37,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 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 21:23:37,995 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 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 21:23:37,995 INFO L175 Difference]: Start difference. First operand has 168 places, 205 transitions, 4272 flow. Second operand 12 states and 1510 transitions. [2023-08-25 21:23:37,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 250 transitions, 5108 flow [2023-08-25 21:23:38,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 250 transitions, 4988 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-08-25 21:23:38,076 INFO L231 Difference]: Finished difference. Result has 173 places, 209 transitions, 4662 flow [2023-08-25 21:23:38,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4662, PETRI_PLACES=173, PETRI_TRANSITIONS=209} [2023-08-25 21:23:38,077 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 140 predicate places. [2023-08-25 21:23:38,077 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 209 transitions, 4662 flow [2023-08-25 21:23:38,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:38,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:38,078 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:38,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-25 21:23:38,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:38,282 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:38,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:38,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1754299613, now seen corresponding path program 17 times [2023-08-25 21:23:38,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:38,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240075284] [2023-08-25 21:23:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:38,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:38,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:38,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240075284] [2023-08-25 21:23:38,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240075284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:38,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707740688] [2023-08-25 21:23:38,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:23:38,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:38,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:38,338 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:38,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 21:23:38,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 21:23:38,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:38,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:38,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:38,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:38,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707740688] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:38,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:38,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-08-25 21:23:38,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215643344] [2023-08-25 21:23:38,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:38,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:38,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:38,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:38,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:38,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 209 transitions, 4662 flow. Second operand has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 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 21:23:38,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:38,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:38,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:38,817 INFO L124 PetriNetUnfolderBase]: 590/1251 cut-off events. [2023-08-25 21:23:38,817 INFO L125 PetriNetUnfolderBase]: For 31956/31956 co-relation queries the response was YES. [2023-08-25 21:23:38,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11125 conditions, 1251 events. 590/1251 cut-off events. For 31956/31956 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7717 event pairs, 40 based on Foata normal form. 8/1259 useless extension candidates. Maximal degree in co-relation 11051. Up to 485 conditions per place. [2023-08-25 21:23:38,826 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 130 selfloop transitions, 133 changer transitions 0/263 dead transitions. [2023-08-25 21:23:38,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 263 transitions, 5829 flow [2023-08-25 21:23:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 21:23:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 21:23:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1626 transitions. [2023-08-25 21:23:38,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39960678299336444 [2023-08-25 21:23:38,828 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1626 transitions. [2023-08-25 21:23:38,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1626 transitions. [2023-08-25 21:23:38,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:38,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1626 transitions. [2023-08-25 21:23:38,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 125.07692307692308) internal successors, (1626), 13 states have internal predecessors, (1626), 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 21:23:38,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 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 21:23:38,833 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 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 21:23:38,833 INFO L175 Difference]: Start difference. First operand has 173 places, 209 transitions, 4662 flow. Second operand 13 states and 1626 transitions. [2023-08-25 21:23:38,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 263 transitions, 5829 flow [2023-08-25 21:23:38,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 263 transitions, 5604 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-25 21:23:38,918 INFO L231 Difference]: Finished difference. Result has 187 places, 232 transitions, 5509 flow [2023-08-25 21:23:38,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=4429, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5509, PETRI_PLACES=187, PETRI_TRANSITIONS=232} [2023-08-25 21:23:38,918 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 154 predicate places. [2023-08-25 21:23:38,918 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 232 transitions, 5509 flow [2023-08-25 21:23:38,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 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 21:23:38,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:38,919 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:38,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:39,119 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:39,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1878841255, now seen corresponding path program 18 times [2023-08-25 21:23:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794688009] [2023-08-25 21:23:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:39,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:39,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:39,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794688009] [2023-08-25 21:23:39,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794688009] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:39,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192776944] [2023-08-25 21:23:39,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:23:39,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:39,168 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:39,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 21:23:39,260 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 21:23:39,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:39,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:39,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:39,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192776944] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:39,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:39,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-25 21:23:39,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163438274] [2023-08-25 21:23:39,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:39,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:39,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:39,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:39,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:39,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 232 transitions, 5509 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:39,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:39,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:39,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:39,637 INFO L124 PetriNetUnfolderBase]: 562/1183 cut-off events. [2023-08-25 21:23:39,638 INFO L125 PetriNetUnfolderBase]: For 31421/31421 co-relation queries the response was YES. [2023-08-25 21:23:39,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11202 conditions, 1183 events. 562/1183 cut-off events. For 31421/31421 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7166 event pairs, 40 based on Foata normal form. 20/1203 useless extension candidates. Maximal degree in co-relation 11122. Up to 471 conditions per place. [2023-08-25 21:23:39,647 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 143 selfloop transitions, 116 changer transitions 1/260 dead transitions. [2023-08-25 21:23:39,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 260 transitions, 6031 flow [2023-08-25 21:23:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 21:23:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 21:23:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1507 transitions. [2023-08-25 21:23:39,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40122470713525027 [2023-08-25 21:23:39,649 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1507 transitions. [2023-08-25 21:23:39,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1507 transitions. [2023-08-25 21:23:39,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:39,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1507 transitions. [2023-08-25 21:23:39,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 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 21:23:39,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 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 21:23:39,653 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 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 21:23:39,653 INFO L175 Difference]: Start difference. First operand has 187 places, 232 transitions, 5509 flow. Second operand 12 states and 1507 transitions. [2023-08-25 21:23:39,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 260 transitions, 6031 flow [2023-08-25 21:23:39,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 260 transitions, 5853 flow, removed 79 selfloop flow, removed 3 redundant places. [2023-08-25 21:23:39,748 INFO L231 Difference]: Finished difference. Result has 195 places, 224 transitions, 5364 flow [2023-08-25 21:23:39,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=5152, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5364, PETRI_PLACES=195, PETRI_TRANSITIONS=224} [2023-08-25 21:23:39,749 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 162 predicate places. [2023-08-25 21:23:39,749 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 224 transitions, 5364 flow [2023-08-25 21:23:39,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:39,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:39,749 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:39,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:39,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-25 21:23:39,954 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:39,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:39,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1607203974, now seen corresponding path program 19 times [2023-08-25 21:23:39,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:39,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679642070] [2023-08-25 21:23:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:39,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:39,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:39,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679642070] [2023-08-25 21:23:39,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679642070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:39,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177736424] [2023-08-25 21:23:39,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:23:39,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:39,997 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:40,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 21:23:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:40,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:40,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:40,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:40,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177736424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:40,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:40,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-25 21:23:40,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978272279] [2023-08-25 21:23:40,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:40,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:40,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:40,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:40,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:40,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 224 transitions, 5364 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:40,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:40,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:40,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:40,482 INFO L124 PetriNetUnfolderBase]: 611/1289 cut-off events. [2023-08-25 21:23:40,482 INFO L125 PetriNetUnfolderBase]: For 40196/40196 co-relation queries the response was YES. [2023-08-25 21:23:40,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12648 conditions, 1289 events. 611/1289 cut-off events. For 40196/40196 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7999 event pairs, 32 based on Foata normal form. 18/1307 useless extension candidates. Maximal degree in co-relation 12569. Up to 324 conditions per place. [2023-08-25 21:23:40,492 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 165 selfloop transitions, 132 changer transitions 11/308 dead transitions. [2023-08-25 21:23:40,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 308 transitions, 7375 flow [2023-08-25 21:23:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 21:23:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 21:23:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1885 transitions. [2023-08-25 21:23:40,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014909478168264 [2023-08-25 21:23:40,494 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1885 transitions. [2023-08-25 21:23:40,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1885 transitions. [2023-08-25 21:23:40,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:40,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1885 transitions. [2023-08-25 21:23:40,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.66666666666667) internal successors, (1885), 15 states have internal predecessors, (1885), 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 21:23:40,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 313.0) internal successors, (5008), 16 states have internal predecessors, (5008), 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 21:23:40,499 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 313.0) internal successors, (5008), 16 states have internal predecessors, (5008), 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 21:23:40,499 INFO L175 Difference]: Start difference. First operand has 195 places, 224 transitions, 5364 flow. Second operand 15 states and 1885 transitions. [2023-08-25 21:23:40,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 308 transitions, 7375 flow [2023-08-25 21:23:40,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 308 transitions, 7247 flow, removed 52 selfloop flow, removed 4 redundant places. [2023-08-25 21:23:40,609 INFO L231 Difference]: Finished difference. Result has 211 places, 248 transitions, 6464 flow [2023-08-25 21:23:40,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=5268, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6464, PETRI_PLACES=211, PETRI_TRANSITIONS=248} [2023-08-25 21:23:40,609 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 178 predicate places. [2023-08-25 21:23:40,609 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 248 transitions, 6464 flow [2023-08-25 21:23:40,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:40,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:40,610 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:40,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:40,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-25 21:23:40,815 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:40,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:40,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1951011127, now seen corresponding path program 20 times [2023-08-25 21:23:40,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:40,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385148133] [2023-08-25 21:23:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:40,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:40,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:40,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385148133] [2023-08-25 21:23:40,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385148133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:40,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128983125] [2023-08-25 21:23:40,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:23:40,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:40,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:40,868 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:40,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 21:23:40,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:23:40,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:40,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:40,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:40,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:41,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128983125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:41,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:41,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-08-25 21:23:41,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697495633] [2023-08-25 21:23:41,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:41,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:41,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:41,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:41,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:41,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 248 transitions, 6464 flow. Second operand has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 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 21:23:41,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:41,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:41,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:41,286 INFO L124 PetriNetUnfolderBase]: 570/1172 cut-off events. [2023-08-25 21:23:41,286 INFO L125 PetriNetUnfolderBase]: For 38642/38642 co-relation queries the response was YES. [2023-08-25 21:23:41,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12404 conditions, 1172 events. 570/1172 cut-off events. For 38642/38642 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6863 event pairs, 44 based on Foata normal form. 16/1188 useless extension candidates. Maximal degree in co-relation 12320. Up to 528 conditions per place. [2023-08-25 21:23:41,295 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 151 selfloop transitions, 111 changer transitions 6/268 dead transitions. [2023-08-25 21:23:41,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 268 transitions, 7017 flow [2023-08-25 21:23:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 21:23:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 21:23:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1376 transitions. [2023-08-25 21:23:41,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996514667441185 [2023-08-25 21:23:41,297 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1376 transitions. [2023-08-25 21:23:41,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1376 transitions. [2023-08-25 21:23:41,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:41,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1376 transitions. [2023-08-25 21:23:41,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 125.0909090909091) internal successors, (1376), 11 states have internal predecessors, (1376), 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 21:23:41,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:41,301 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:41,301 INFO L175 Difference]: Start difference. First operand has 211 places, 248 transitions, 6464 flow. Second operand 11 states and 1376 transitions. [2023-08-25 21:23:41,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 268 transitions, 7017 flow [2023-08-25 21:23:41,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 268 transitions, 6633 flow, removed 175 selfloop flow, removed 3 redundant places. [2023-08-25 21:23:41,450 INFO L231 Difference]: Finished difference. Result has 218 places, 236 transitions, 6012 flow [2023-08-25 21:23:41,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=5948, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6012, PETRI_PLACES=218, PETRI_TRANSITIONS=236} [2023-08-25 21:23:41,451 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 185 predicate places. [2023-08-25 21:23:41,451 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 236 transitions, 6012 flow [2023-08-25 21:23:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 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 21:23:41,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:41,451 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:41,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:41,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:41,656 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:41,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:41,656 INFO L85 PathProgramCache]: Analyzing trace with hash -595797548, now seen corresponding path program 21 times [2023-08-25 21:23:41,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:41,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650846890] [2023-08-25 21:23:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:41,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:41,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650846890] [2023-08-25 21:23:41,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650846890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407942098] [2023-08-25 21:23:41,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:23:41,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:41,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:41,701 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:41,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 21:23:41,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 21:23:41,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:41,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:41,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:23:41,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 21:23:41,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407942098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:41,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 21:23:41,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-25 21:23:41,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497447424] [2023-08-25 21:23:41,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:41,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:23:41,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:23:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:41,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:41,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 236 transitions, 6012 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:41,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:41,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:41,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:42,076 INFO L124 PetriNetUnfolderBase]: 590/1212 cut-off events. [2023-08-25 21:23:42,076 INFO L125 PetriNetUnfolderBase]: For 37367/37367 co-relation queries the response was YES. [2023-08-25 21:23:42,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12371 conditions, 1212 events. 590/1212 cut-off events. For 37367/37367 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7218 event pairs, 47 based on Foata normal form. 26/1238 useless extension candidates. Maximal degree in co-relation 12288. Up to 534 conditions per place. [2023-08-25 21:23:42,083 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 60 selfloop transitions, 10 changer transitions 207/277 dead transitions. [2023-08-25 21:23:42,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 277 transitions, 7308 flow [2023-08-25 21:23:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:23:42,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:23:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 758 transitions. [2023-08-25 21:23:42,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036208732694356 [2023-08-25 21:23:42,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 758 transitions. [2023-08-25 21:23:42,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 758 transitions. [2023-08-25 21:23:42,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:42,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 758 transitions. [2023-08-25 21:23:42,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 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 21:23:42,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:42,086 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:42,086 INFO L175 Difference]: Start difference. First operand has 218 places, 236 transitions, 6012 flow. Second operand 6 states and 758 transitions. [2023-08-25 21:23:42,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 277 transitions, 7308 flow [2023-08-25 21:23:42,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 277 transitions, 7036 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-25 21:23:42,197 INFO L231 Difference]: Finished difference. Result has 217 places, 63 transitions, 1456 flow [2023-08-25 21:23:42,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1456, PETRI_PLACES=217, PETRI_TRANSITIONS=63} [2023-08-25 21:23:42,198 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 184 predicate places. [2023-08-25 21:23:42,198 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 63 transitions, 1456 flow [2023-08-25 21:23:42,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:42,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:42,198 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:42,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:42,402 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:42,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1847331943, now seen corresponding path program 22 times [2023-08-25 21:23:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:42,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615130708] [2023-08-25 21:23:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:42,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:42,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615130708] [2023-08-25 21:23:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615130708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573792971] [2023-08-25 21:23:42,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:23:42,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:42,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:42,445 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:42,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 21:23:42,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:23:42,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:42,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:42,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:42,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:42,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573792971] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:42,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:42,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-25 21:23:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002911188] [2023-08-25 21:23:42,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:42,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:42,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:42,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:42,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:42,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:42,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 63 transitions, 1456 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:42,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:42,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:42,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:42,710 INFO L124 PetriNetUnfolderBase]: 110/263 cut-off events. [2023-08-25 21:23:42,710 INFO L125 PetriNetUnfolderBase]: For 10260/10260 co-relation queries the response was YES. [2023-08-25 21:23:42,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 263 events. 110/263 cut-off events. For 10260/10260 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1027 event pairs, 16 based on Foata normal form. 4/267 useless extension candidates. Maximal degree in co-relation 2583. Up to 128 conditions per place. [2023-08-25 21:23:42,712 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 49 selfloop transitions, 25 changer transitions 2/76 dead transitions. [2023-08-25 21:23:42,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 76 transitions, 1618 flow [2023-08-25 21:23:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 21:23:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 21:23:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1243 transitions. [2023-08-25 21:23:42,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39712460063897764 [2023-08-25 21:23:42,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1243 transitions. [2023-08-25 21:23:42,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1243 transitions. [2023-08-25 21:23:42,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:42,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1243 transitions. [2023-08-25 21:23:42,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.3) internal successors, (1243), 10 states have internal predecessors, (1243), 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 21:23:42,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:42,716 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:42,717 INFO L175 Difference]: Start difference. First operand has 217 places, 63 transitions, 1456 flow. Second operand 10 states and 1243 transitions. [2023-08-25 21:23:42,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 76 transitions, 1618 flow [2023-08-25 21:23:42,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 76 transitions, 1055 flow, removed 88 selfloop flow, removed 75 redundant places. [2023-08-25 21:23:42,735 INFO L231 Difference]: Finished difference. Result has 130 places, 58 transitions, 853 flow [2023-08-25 21:23:42,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=853, PETRI_PLACES=130, PETRI_TRANSITIONS=58} [2023-08-25 21:23:42,736 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 97 predicate places. [2023-08-25 21:23:42,736 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 58 transitions, 853 flow [2023-08-25 21:23:42,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:42,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:42,736 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:42,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:42,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-25 21:23:42,940 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:42,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1264047538, now seen corresponding path program 23 times [2023-08-25 21:23:42,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:42,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208824022] [2023-08-25 21:23:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:42,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:42,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208824022] [2023-08-25 21:23:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208824022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606400294] [2023-08-25 21:23:42,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:23:42,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:42,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:42,988 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:42,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 21:23:43,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 21:23:43,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:43,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:43,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:43,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:43,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606400294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:43,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:43,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-08-25 21:23:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077887183] [2023-08-25 21:23:43,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:43,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:43,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:43,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:43,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:43,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:43,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 58 transitions, 853 flow. Second operand has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 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 21:23:43,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:43,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:43,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:43,269 INFO L124 PetriNetUnfolderBase]: 104/247 cut-off events. [2023-08-25 21:23:43,269 INFO L125 PetriNetUnfolderBase]: For 2715/2715 co-relation queries the response was YES. [2023-08-25 21:23:43,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1808 conditions, 247 events. 104/247 cut-off events. For 2715/2715 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 934 event pairs, 2 based on Foata normal form. 4/251 useless extension candidates. Maximal degree in co-relation 1763. Up to 116 conditions per place. [2023-08-25 21:23:43,271 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 71 selfloop transitions, 19 changer transitions 1/91 dead transitions. [2023-08-25 21:23:43,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 91 transitions, 1143 flow [2023-08-25 21:23:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 21:23:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 21:23:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1503 transitions. [2023-08-25 21:23:43,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4001597444089457 [2023-08-25 21:23:43,272 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1503 transitions. [2023-08-25 21:23:43,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1503 transitions. [2023-08-25 21:23:43,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:43,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1503 transitions. [2023-08-25 21:23:43,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.25) internal successors, (1503), 12 states have internal predecessors, (1503), 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 21:23:43,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 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 21:23:43,276 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 313.0) internal successors, (4069), 13 states have internal predecessors, (4069), 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 21:23:43,276 INFO L175 Difference]: Start difference. First operand has 130 places, 58 transitions, 853 flow. Second operand 12 states and 1503 transitions. [2023-08-25 21:23:43,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 91 transitions, 1143 flow [2023-08-25 21:23:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 91 transitions, 1060 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-08-25 21:23:43,283 INFO L231 Difference]: Finished difference. Result has 123 places, 56 transitions, 780 flow [2023-08-25 21:23:43,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=780, PETRI_PLACES=123, PETRI_TRANSITIONS=56} [2023-08-25 21:23:43,283 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 90 predicate places. [2023-08-25 21:23:43,283 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 56 transitions, 780 flow [2023-08-25 21:23:43,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.58333333333333) internal successors, (1471), 12 states have internal predecessors, (1471), 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 21:23:43,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:43,284 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:43,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-25 21:23:43,488 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:43,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash 775318276, now seen corresponding path program 24 times [2023-08-25 21:23:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:43,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034504629] [2023-08-25 21:23:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:43,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:43,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:43,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034504629] [2023-08-25 21:23:43,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034504629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:43,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130269035] [2023-08-25 21:23:43,531 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:23:43,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:43,531 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:43,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 21:23:43,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 21:23:43,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:43,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:43,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:43,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130269035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:43,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:43,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-25 21:23:43,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049600035] [2023-08-25 21:23:43,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:43,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:43,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:43,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 56 transitions, 780 flow. Second operand has 12 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 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 21:23:43,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:43,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:43,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:43,796 INFO L124 PetriNetUnfolderBase]: 112/269 cut-off events. [2023-08-25 21:23:43,796 INFO L125 PetriNetUnfolderBase]: For 2969/2969 co-relation queries the response was YES. [2023-08-25 21:23:43,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 269 events. 112/269 cut-off events. For 2969/2969 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1067 event pairs, 30 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 1941. Up to 151 conditions per place. [2023-08-25 21:23:43,797 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 58 selfloop transitions, 13 changer transitions 7/78 dead transitions. [2023-08-25 21:23:43,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 78 transitions, 1125 flow [2023-08-25 21:23:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 21:23:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 21:23:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1246 transitions. [2023-08-25 21:23:43,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39808306709265173 [2023-08-25 21:23:43,799 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1246 transitions. [2023-08-25 21:23:43,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1246 transitions. [2023-08-25 21:23:43,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:43,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1246 transitions. [2023-08-25 21:23:43,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.6) internal successors, (1246), 10 states have internal predecessors, (1246), 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 21:23:43,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:43,802 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:43,802 INFO L175 Difference]: Start difference. First operand has 123 places, 56 transitions, 780 flow. Second operand 10 states and 1246 transitions. [2023-08-25 21:23:43,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 78 transitions, 1125 flow [2023-08-25 21:23:43,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 78 transitions, 1050 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-08-25 21:23:43,808 INFO L231 Difference]: Finished difference. Result has 123 places, 55 transitions, 755 flow [2023-08-25 21:23:43,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=755, PETRI_PLACES=123, PETRI_TRANSITIONS=55} [2023-08-25 21:23:43,808 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 90 predicate places. [2023-08-25 21:23:43,808 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 55 transitions, 755 flow [2023-08-25 21:23:43,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 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 21:23:43,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:43,809 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:43,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-25 21:23:44,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-25 21:23:44,013 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:44,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:44,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1638713286, now seen corresponding path program 25 times [2023-08-25 21:23:44,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:44,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998339582] [2023-08-25 21:23:44,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:44,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:44,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998339582] [2023-08-25 21:23:44,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998339582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:44,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240845177] [2023-08-25 21:23:44,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:23:44,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:44,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:44,056 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:44,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 21:23:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:44,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:23:44,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:44,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:44,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240845177] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:44,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:44,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2023-08-25 21:23:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534325986] [2023-08-25 21:23:44,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:44,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:44,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:44,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:44,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:44,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:44,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 55 transitions, 755 flow. Second operand has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:44,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:44,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:44,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:44,369 INFO L124 PetriNetUnfolderBase]: 117/280 cut-off events. [2023-08-25 21:23:44,369 INFO L125 PetriNetUnfolderBase]: For 2984/2984 co-relation queries the response was YES. [2023-08-25 21:23:44,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1969 conditions, 280 events. 117/280 cut-off events. For 2984/2984 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1120 event pairs, 2 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 1925. Up to 82 conditions per place. [2023-08-25 21:23:44,371 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 70 selfloop transitions, 28 changer transitions 1/99 dead transitions. [2023-08-25 21:23:44,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 99 transitions, 1160 flow [2023-08-25 21:23:44,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 21:23:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 21:23:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1631 transitions. [2023-08-25 21:23:44,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40083558613910053 [2023-08-25 21:23:44,373 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1631 transitions. [2023-08-25 21:23:44,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1631 transitions. [2023-08-25 21:23:44,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:44,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1631 transitions. [2023-08-25 21:23:44,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 125.46153846153847) internal successors, (1631), 13 states have internal predecessors, (1631), 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 21:23:44,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 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 21:23:44,376 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 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 21:23:44,377 INFO L175 Difference]: Start difference. First operand has 123 places, 55 transitions, 755 flow. Second operand 13 states and 1631 transitions. [2023-08-25 21:23:44,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 99 transitions, 1160 flow [2023-08-25 21:23:44,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 99 transitions, 1130 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-25 21:23:44,383 INFO L231 Difference]: Finished difference. Result has 130 places, 59 transitions, 843 flow [2023-08-25 21:23:44,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=843, PETRI_PLACES=130, PETRI_TRANSITIONS=59} [2023-08-25 21:23:44,384 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 97 predicate places. [2023-08-25 21:23:44,384 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 59 transitions, 843 flow [2023-08-25 21:23:44,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 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 21:23:44,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:44,385 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:44,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:44,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:44,589 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:44,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash 739881737, now seen corresponding path program 26 times [2023-08-25 21:23:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912853691] [2023-08-25 21:23:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:44,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:44,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912853691] [2023-08-25 21:23:44,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912853691] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106049585] [2023-08-25 21:23:44,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:23:44,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:44,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:44,747 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:44,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 21:23:44,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:23:44,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:44,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 21:23:44,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:44,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:44,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106049585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:44,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:44,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-08-25 21:23:44,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901527905] [2023-08-25 21:23:44,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:44,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 21:23:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:44,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 21:23:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-25 21:23:44,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 313 [2023-08-25 21:23:44,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 59 transitions, 843 flow. Second operand has 13 states, 13 states have (on average 111.46153846153847) internal successors, (1449), 13 states have internal predecessors, (1449), 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 21:23:44,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:44,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 313 [2023-08-25 21:23:44,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:45,037 INFO L124 PetriNetUnfolderBase]: 146/340 cut-off events. [2023-08-25 21:23:45,037 INFO L125 PetriNetUnfolderBase]: For 3540/3540 co-relation queries the response was YES. [2023-08-25 21:23:45,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 340 events. 146/340 cut-off events. For 3540/3540 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1454 event pairs, 28 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 2429. Up to 232 conditions per place. [2023-08-25 21:23:45,039 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 85 selfloop transitions, 14 changer transitions 3/102 dead transitions. [2023-08-25 21:23:45,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 102 transitions, 1277 flow [2023-08-25 21:23:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 21:23:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 21:23:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1265 transitions. [2023-08-25 21:23:45,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36741214057507987 [2023-08-25 21:23:45,045 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1265 transitions. [2023-08-25 21:23:45,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1265 transitions. [2023-08-25 21:23:45,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:45,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1265 transitions. [2023-08-25 21:23:45,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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 21:23:45,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:45,052 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:45,052 INFO L175 Difference]: Start difference. First operand has 130 places, 59 transitions, 843 flow. Second operand 11 states and 1265 transitions. [2023-08-25 21:23:45,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 102 transitions, 1277 flow [2023-08-25 21:23:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 102 transitions, 1229 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-25 21:23:45,060 INFO L231 Difference]: Finished difference. Result has 136 places, 65 transitions, 923 flow [2023-08-25 21:23:45,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=923, PETRI_PLACES=136, PETRI_TRANSITIONS=65} [2023-08-25 21:23:45,060 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 103 predicate places. [2023-08-25 21:23:45,060 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 65 transitions, 923 flow [2023-08-25 21:23:45,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.46153846153847) internal successors, (1449), 13 states have internal predecessors, (1449), 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 21:23:45,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:45,061 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:45,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:45,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:45,265 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:45,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash 257853321, now seen corresponding path program 27 times [2023-08-25 21:23:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:45,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983087716] [2023-08-25 21:23:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:45,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983087716] [2023-08-25 21:23:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983087716] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655681075] [2023-08-25 21:23:45,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:23:45,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:45,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:45,370 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:45,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-25 21:23:45,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:23:45,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:45,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:45,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 21:23:45,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 21:23:45,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655681075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:45,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 21:23:45,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-25 21:23:45,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633793787] [2023-08-25 21:23:45,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:45,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:23:45,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:45,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:23:45,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-25 21:23:45,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:45,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 65 transitions, 923 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:45,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:45,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:45,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:45,594 INFO L124 PetriNetUnfolderBase]: 142/335 cut-off events. [2023-08-25 21:23:45,594 INFO L125 PetriNetUnfolderBase]: For 3283/3283 co-relation queries the response was YES. [2023-08-25 21:23:45,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 335 events. 142/335 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1430 event pairs, 32 based on Foata normal form. 1/336 useless extension candidates. Maximal degree in co-relation 2355. Up to 177 conditions per place. [2023-08-25 21:23:45,595 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 54 selfloop transitions, 11 changer transitions 11/76 dead transitions. [2023-08-25 21:23:45,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 76 transitions, 1121 flow [2023-08-25 21:23:45,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:23:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:23:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 751 transitions. [2023-08-25 21:23:45,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39989350372736954 [2023-08-25 21:23:45,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 751 transitions. [2023-08-25 21:23:45,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 751 transitions. [2023-08-25 21:23:45,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:45,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 751 transitions. [2023-08-25 21:23:45,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 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 21:23:45,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:45,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:45,600 INFO L175 Difference]: Start difference. First operand has 136 places, 65 transitions, 923 flow. Second operand 6 states and 751 transitions. [2023-08-25 21:23:45,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 76 transitions, 1121 flow [2023-08-25 21:23:45,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 76 transitions, 1081 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-25 21:23:45,608 INFO L231 Difference]: Finished difference. Result has 140 places, 59 transitions, 848 flow [2023-08-25 21:23:45,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=848, PETRI_PLACES=140, PETRI_TRANSITIONS=59} [2023-08-25 21:23:45,610 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 107 predicate places. [2023-08-25 21:23:45,610 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 59 transitions, 848 flow [2023-08-25 21:23:45,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:45,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:45,610 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:45,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:45,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:45,817 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:45,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:45,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2138789055, now seen corresponding path program 28 times [2023-08-25 21:23:45,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:45,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523146488] [2023-08-25 21:23:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:45,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:45,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523146488] [2023-08-25 21:23:45,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523146488] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:45,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577563479] [2023-08-25 21:23:45,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:23:45,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:45,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:45,909 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:45,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-25 21:23:46,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:23:46,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:46,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 21:23:46,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:46,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577563479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:46,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:46,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-08-25 21:23:46,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647009031] [2023-08-25 21:23:46,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:46,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:46,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:46,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:46,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:46,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:46,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 59 transitions, 848 flow. Second operand has 12 states, 12 states have (on average 122.0) internal successors, (1464), 12 states have internal predecessors, (1464), 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 21:23:46,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:46,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:46,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:46,208 INFO L124 PetriNetUnfolderBase]: 178/421 cut-off events. [2023-08-25 21:23:46,208 INFO L125 PetriNetUnfolderBase]: For 4967/4967 co-relation queries the response was YES. [2023-08-25 21:23:46,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 421 events. 178/421 cut-off events. For 4967/4967 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1922 event pairs, 54 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 3138. Up to 287 conditions per place. [2023-08-25 21:23:46,210 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 80 selfloop transitions, 24 changer transitions 3/107 dead transitions. [2023-08-25 21:23:46,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 107 transitions, 1554 flow [2023-08-25 21:23:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 21:23:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 21:23:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1264 transitions. [2023-08-25 21:23:46,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4038338658146965 [2023-08-25 21:23:46,212 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1264 transitions. [2023-08-25 21:23:46,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1264 transitions. [2023-08-25 21:23:46,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:46,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1264 transitions. [2023-08-25 21:23:46,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.4) internal successors, (1264), 10 states have internal predecessors, (1264), 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 21:23:46,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:46,215 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:46,215 INFO L175 Difference]: Start difference. First operand has 140 places, 59 transitions, 848 flow. Second operand 10 states and 1264 transitions. [2023-08-25 21:23:46,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 107 transitions, 1554 flow [2023-08-25 21:23:46,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 107 transitions, 1417 flow, removed 20 selfloop flow, removed 13 redundant places. [2023-08-25 21:23:46,225 INFO L231 Difference]: Finished difference. Result has 134 places, 70 transitions, 998 flow [2023-08-25 21:23:46,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=998, PETRI_PLACES=134, PETRI_TRANSITIONS=70} [2023-08-25 21:23:46,226 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 101 predicate places. [2023-08-25 21:23:46,226 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 70 transitions, 998 flow [2023-08-25 21:23:46,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.0) internal successors, (1464), 12 states have internal predecessors, (1464), 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 21:23:46,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:46,226 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:46,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:46,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-25 21:23:46,431 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:46,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:46,431 INFO L85 PathProgramCache]: Analyzing trace with hash 740326473, now seen corresponding path program 29 times [2023-08-25 21:23:46,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:46,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729752784] [2023-08-25 21:23:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:46,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:46,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729752784] [2023-08-25 21:23:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729752784] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987450638] [2023-08-25 21:23:46,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:23:46,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:46,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:46,524 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:46,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-25 21:23:46,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 21:23:46,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:46,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 21:23:46,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:46,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:46,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987450638] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:46,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:46,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2023-08-25 21:23:46,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898062574] [2023-08-25 21:23:46,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:46,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 21:23:46,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:46,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 21:23:46,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-25 21:23:46,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:46,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 70 transitions, 998 flow. Second operand has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 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 21:23:46,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:46,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:46,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:46,820 INFO L124 PetriNetUnfolderBase]: 202/480 cut-off events. [2023-08-25 21:23:46,821 INFO L125 PetriNetUnfolderBase]: For 4409/4409 co-relation queries the response was YES. [2023-08-25 21:23:46,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 480 events. 202/480 cut-off events. For 4409/4409 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2324 event pairs, 32 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 3625. Up to 333 conditions per place. [2023-08-25 21:23:46,823 INFO L140 encePairwiseOnDemand]: 309/313 looper letters, 81 selfloop transitions, 21 changer transitions 2/104 dead transitions. [2023-08-25 21:23:46,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 104 transitions, 1475 flow [2023-08-25 21:23:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 21:23:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 21:23:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 893 transitions. [2023-08-25 21:23:46,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075764491099954 [2023-08-25 21:23:46,824 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 893 transitions. [2023-08-25 21:23:46,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 893 transitions. [2023-08-25 21:23:46,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:46,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 893 transitions. [2023-08-25 21:23:46,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.57142857142857) internal successors, (893), 7 states have internal predecessors, (893), 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 21:23:46,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 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 21:23:46,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 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 21:23:46,826 INFO L175 Difference]: Start difference. First operand has 134 places, 70 transitions, 998 flow. Second operand 7 states and 893 transitions. [2023-08-25 21:23:46,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 104 transitions, 1475 flow [2023-08-25 21:23:46,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 104 transitions, 1433 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-25 21:23:46,837 INFO L231 Difference]: Finished difference. Result has 144 places, 75 transitions, 1112 flow [2023-08-25 21:23:46,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1112, PETRI_PLACES=144, PETRI_TRANSITIONS=75} [2023-08-25 21:23:46,837 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2023-08-25 21:23:46,837 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 75 transitions, 1112 flow [2023-08-25 21:23:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 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 21:23:46,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:46,838 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:46,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:47,042 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:47,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1180106407, now seen corresponding path program 30 times [2023-08-25 21:23:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:47,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035795148] [2023-08-25 21:23:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035795148] [2023-08-25 21:23:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035795148] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43229340] [2023-08-25 21:23:47,126 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:23:47,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:47,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:47,129 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:47,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-25 21:23:47,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 21:23:47,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:47,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 21:23:47,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:47,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:23:47,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43229340] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:47,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:47,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-08-25 21:23:47,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685474075] [2023-08-25 21:23:47,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:47,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:23:47,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:47,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:23:47,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:47,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:47,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 75 transitions, 1112 flow. Second operand has 12 states, 12 states have (on average 122.33333333333333) internal successors, (1468), 12 states have internal predecessors, (1468), 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 21:23:47,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:47,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:47,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:47,455 INFO L124 PetriNetUnfolderBase]: 230/541 cut-off events. [2023-08-25 21:23:47,455 INFO L125 PetriNetUnfolderBase]: For 5460/5460 co-relation queries the response was YES. [2023-08-25 21:23:47,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 541 events. 230/541 cut-off events. For 5460/5460 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2716 event pairs, 51 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 4269. Up to 338 conditions per place. [2023-08-25 21:23:47,458 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 92 selfloop transitions, 26 changer transitions 4/122 dead transitions. [2023-08-25 21:23:47,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 122 transitions, 1731 flow [2023-08-25 21:23:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 21:23:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 21:23:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1268 transitions. [2023-08-25 21:23:47,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405111821086262 [2023-08-25 21:23:47,460 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1268 transitions. [2023-08-25 21:23:47,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1268 transitions. [2023-08-25 21:23:47,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:47,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1268 transitions. [2023-08-25 21:23:47,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.8) internal successors, (1268), 10 states have internal predecessors, (1268), 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 21:23:47,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:47,463 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 313.0) internal successors, (3443), 11 states have internal predecessors, (3443), 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 21:23:47,463 INFO L175 Difference]: Start difference. First operand has 144 places, 75 transitions, 1112 flow. Second operand 10 states and 1268 transitions. [2023-08-25 21:23:47,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 122 transitions, 1731 flow [2023-08-25 21:23:47,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 122 transitions, 1690 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-25 21:23:47,476 INFO L231 Difference]: Finished difference. Result has 153 places, 80 transitions, 1231 flow [2023-08-25 21:23:47,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1231, PETRI_PLACES=153, PETRI_TRANSITIONS=80} [2023-08-25 21:23:47,476 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2023-08-25 21:23:47,476 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 80 transitions, 1231 flow [2023-08-25 21:23:47,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.33333333333333) internal successors, (1468), 12 states have internal predecessors, (1468), 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 21:23:47,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:47,477 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:47,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-08-25 21:23:47,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:47,681 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:47,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1462328154, now seen corresponding path program 31 times [2023-08-25 21:23:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:47,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181952892] [2023-08-25 21:23:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:47,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:47,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:47,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181952892] [2023-08-25 21:23:47,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181952892] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:47,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379079359] [2023-08-25 21:23:47,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:23:47,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:47,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:47,739 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:47,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-25 21:23:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:47,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 21:23:47,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:47,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:47,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379079359] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:47,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:47,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-25 21:23:47,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854619181] [2023-08-25 21:23:47,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:47,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 21:23:47,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:47,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 21:23:47,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2023-08-25 21:23:47,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:47,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 80 transitions, 1231 flow. Second operand has 15 states, 15 states have (on average 122.2) internal successors, (1833), 15 states have internal predecessors, (1833), 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 21:23:47,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:47,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:47,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:48,104 INFO L124 PetriNetUnfolderBase]: 201/497 cut-off events. [2023-08-25 21:23:48,104 INFO L125 PetriNetUnfolderBase]: For 5499/5499 co-relation queries the response was YES. [2023-08-25 21:23:48,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 497 events. 201/497 cut-off events. For 5499/5499 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2531 event pairs, 24 based on Foata normal form. 16/513 useless extension candidates. Maximal degree in co-relation 3873. Up to 153 conditions per place. [2023-08-25 21:23:48,107 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 75 selfloop transitions, 45 changer transitions 14/134 dead transitions. [2023-08-25 21:23:48,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 134 transitions, 1860 flow [2023-08-25 21:23:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 21:23:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 21:23:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1876 transitions. [2023-08-25 21:23:48,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995740149094782 [2023-08-25 21:23:48,109 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1876 transitions. [2023-08-25 21:23:48,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1876 transitions. [2023-08-25 21:23:48,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:48,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1876 transitions. [2023-08-25 21:23:48,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.06666666666666) internal successors, (1876), 15 states have internal predecessors, (1876), 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 21:23:48,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 313.0) internal successors, (5008), 16 states have internal predecessors, (5008), 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 21:23:48,113 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 313.0) internal successors, (5008), 16 states have internal predecessors, (5008), 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 21:23:48,113 INFO L175 Difference]: Start difference. First operand has 153 places, 80 transitions, 1231 flow. Second operand 15 states and 1876 transitions. [2023-08-25 21:23:48,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 134 transitions, 1860 flow [2023-08-25 21:23:48,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 134 transitions, 1793 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-25 21:23:48,129 INFO L231 Difference]: Finished difference. Result has 163 places, 80 transitions, 1343 flow [2023-08-25 21:23:48,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1343, PETRI_PLACES=163, PETRI_TRANSITIONS=80} [2023-08-25 21:23:48,129 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 130 predicate places. [2023-08-25 21:23:48,129 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 80 transitions, 1343 flow [2023-08-25 21:23:48,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 122.2) internal successors, (1833), 15 states have internal predecessors, (1833), 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 21:23:48,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:48,130 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:48,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-08-25 21:23:48,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-25 21:23:48,334 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:48,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:48,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1476114970, now seen corresponding path program 32 times [2023-08-25 21:23:48,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:48,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044608062] [2023-08-25 21:23:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:48,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:48,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:48,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044608062] [2023-08-25 21:23:48,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044608062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:48,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936222967] [2023-08-25 21:23:48,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:23:48,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:48,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:48,388 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:48,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-25 21:23:48,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:23:48,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:48,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 21:23:48,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:48,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:48,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936222967] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:48,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:48,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 14 [2023-08-25 21:23:48,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540275637] [2023-08-25 21:23:48,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:48,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 21:23:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 21:23:48,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-08-25 21:23:48,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:48,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 80 transitions, 1343 flow. Second operand has 15 states, 15 states have (on average 122.33333333333333) internal successors, (1835), 15 states have internal predecessors, (1835), 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 21:23:48,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:48,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:48,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:48,708 INFO L124 PetriNetUnfolderBase]: 154/373 cut-off events. [2023-08-25 21:23:48,708 INFO L125 PetriNetUnfolderBase]: For 4136/4136 co-relation queries the response was YES. [2023-08-25 21:23:48,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 373 events. 154/373 cut-off events. For 4136/4136 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1665 event pairs, 30 based on Foata normal form. 8/381 useless extension candidates. Maximal degree in co-relation 2939. Up to 196 conditions per place. [2023-08-25 21:23:48,710 INFO L140 encePairwiseOnDemand]: 307/313 looper letters, 60 selfloop transitions, 32 changer transitions 2/94 dead transitions. [2023-08-25 21:23:48,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 94 transitions, 1489 flow [2023-08-25 21:23:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 21:23:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 21:23:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1365 transitions. [2023-08-25 21:23:48,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964565785652048 [2023-08-25 21:23:48,712 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1365 transitions. [2023-08-25 21:23:48,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1365 transitions. [2023-08-25 21:23:48,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:48,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1365 transitions. [2023-08-25 21:23:48,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.0909090909091) internal successors, (1365), 11 states have internal predecessors, (1365), 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 21:23:48,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:48,715 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 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 21:23:48,715 INFO L175 Difference]: Start difference. First operand has 163 places, 80 transitions, 1343 flow. Second operand 11 states and 1365 transitions. [2023-08-25 21:23:48,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 94 transitions, 1489 flow [2023-08-25 21:23:48,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 94 transitions, 1300 flow, removed 54 selfloop flow, removed 17 redundant places. [2023-08-25 21:23:48,728 INFO L231 Difference]: Finished difference. Result has 154 places, 73 transitions, 1105 flow [2023-08-25 21:23:48,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1105, PETRI_PLACES=154, PETRI_TRANSITIONS=73} [2023-08-25 21:23:48,728 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 121 predicate places. [2023-08-25 21:23:48,729 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 73 transitions, 1105 flow [2023-08-25 21:23:48,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 122.33333333333333) internal successors, (1835), 15 states have internal predecessors, (1835), 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 21:23:48,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:48,729 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:48,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:48,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-25 21:23:48,933 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:48,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1607263177, now seen corresponding path program 33 times [2023-08-25 21:23:48,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:48,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166073947] [2023-08-25 21:23:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:48,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166073947] [2023-08-25 21:23:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166073947] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462011693] [2023-08-25 21:23:48,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:23:48,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:48,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:48,983 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:48,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-25 21:23:49,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 21:23:49,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:49,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:49,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-25 21:23:49,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 21:23:49,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462011693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:49,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 21:23:49,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-25 21:23:49,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237013538] [2023-08-25 21:23:49,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:49,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:23:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:23:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:23:49,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:49,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 73 transitions, 1105 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:49,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:49,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:49,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:49,213 INFO L124 PetriNetUnfolderBase]: 150/352 cut-off events. [2023-08-25 21:23:49,214 INFO L125 PetriNetUnfolderBase]: For 3896/3896 co-relation queries the response was YES. [2023-08-25 21:23:49,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 352 events. 150/352 cut-off events. For 3896/3896 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1526 event pairs, 39 based on Foata normal form. 9/361 useless extension candidates. Maximal degree in co-relation 2672. Up to 123 conditions per place. [2023-08-25 21:23:49,215 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 23 selfloop transitions, 1 changer transitions 60/84 dead transitions. [2023-08-25 21:23:49,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 84 transitions, 1342 flow [2023-08-25 21:23:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:23:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:23:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 752 transitions. [2023-08-25 21:23:49,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40042598509052185 [2023-08-25 21:23:49,216 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 752 transitions. [2023-08-25 21:23:49,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 752 transitions. [2023-08-25 21:23:49,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:49,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 752 transitions. [2023-08-25 21:23:49,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 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 21:23:49,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:49,218 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:49,218 INFO L175 Difference]: Start difference. First operand has 154 places, 73 transitions, 1105 flow. Second operand 6 states and 752 transitions. [2023-08-25 21:23:49,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 84 transitions, 1342 flow [2023-08-25 21:23:49,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 84 transitions, 1302 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-25 21:23:49,228 INFO L231 Difference]: Finished difference. Result has 153 places, 21 transitions, 234 flow [2023-08-25 21:23:49,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=153, PETRI_TRANSITIONS=21} [2023-08-25 21:23:49,229 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2023-08-25 21:23:49,229 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 21 transitions, 234 flow [2023-08-25 21:23:49,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:49,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:49,229 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:49,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:49,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-25 21:23:49,434 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:49,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1504214200, now seen corresponding path program 34 times [2023-08-25 21:23:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752228669] [2023-08-25 21:23:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:49,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752228669] [2023-08-25 21:23:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752228669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982538446] [2023-08-25 21:23:49,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:23:49,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:49,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:49,617 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:49,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-25 21:23:49,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:23:49,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:49,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-25 21:23:49,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:49,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:49,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982538446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:49,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:49,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-08-25 21:23:49,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384883446] [2023-08-25 21:23:49,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:49,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 21:23:49,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:49,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 21:23:49,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-08-25 21:23:49,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 313 [2023-08-25 21:23:49,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 21 transitions, 234 flow. Second operand has 17 states, 17 states have (on average 111.11764705882354) internal successors, (1889), 17 states have internal predecessors, (1889), 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 21:23:49,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:49,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 313 [2023-08-25 21:23:49,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:50,102 INFO L124 PetriNetUnfolderBase]: 69/158 cut-off events. [2023-08-25 21:23:50,102 INFO L125 PetriNetUnfolderBase]: For 1575/1575 co-relation queries the response was YES. [2023-08-25 21:23:50,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 158 events. 69/158 cut-off events. For 1575/1575 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 454 event pairs, 2 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 1071. Up to 33 conditions per place. [2023-08-25 21:23:50,103 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 53 selfloop transitions, 16 changer transitions 7/76 dead transitions. [2023-08-25 21:23:50,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 76 transitions, 673 flow [2023-08-25 21:23:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 21:23:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 21:23:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1495 transitions. [2023-08-25 21:23:50,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36741214057507987 [2023-08-25 21:23:50,104 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1495 transitions. [2023-08-25 21:23:50,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1495 transitions. [2023-08-25 21:23:50,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:50,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1495 transitions. [2023-08-25 21:23:50,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 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 21:23:50,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 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 21:23:50,109 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 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 21:23:50,109 INFO L175 Difference]: Start difference. First operand has 153 places, 21 transitions, 234 flow. Second operand 13 states and 1495 transitions. [2023-08-25 21:23:50,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 76 transitions, 673 flow [2023-08-25 21:23:50,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 479 flow, removed 29 selfloop flow, removed 51 redundant places. [2023-08-25 21:23:50,112 INFO L231 Difference]: Finished difference. Result has 77 places, 28 transitions, 211 flow [2023-08-25 21:23:50,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=211, PETRI_PLACES=77, PETRI_TRANSITIONS=28} [2023-08-25 21:23:50,113 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2023-08-25 21:23:50,113 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 28 transitions, 211 flow [2023-08-25 21:23:50,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 111.11764705882354) internal successors, (1889), 17 states have internal predecessors, (1889), 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 21:23:50,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:50,113 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:50,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:50,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-25 21:23:50,318 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:50,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:50,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1450169671, now seen corresponding path program 35 times [2023-08-25 21:23:50,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:50,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116109455] [2023-08-25 21:23:50,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:50,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:50,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:50,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116109455] [2023-08-25 21:23:50,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116109455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:50,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494722160] [2023-08-25 21:23:50,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:23:50,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:50,408 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:50,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-25 21:23:50,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 21:23:50,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:50,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:50,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:50,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:23:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:50,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494722160] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:23:50,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:23:50,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-08-25 21:23:50,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794630443] [2023-08-25 21:23:50,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:23:50,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 21:23:50,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:50,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 21:23:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-08-25 21:23:50,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:50,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 28 transitions, 211 flow. Second operand has 18 states, 18 states have (on average 122.0) internal successors, (2196), 18 states have internal predecessors, (2196), 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 21:23:50,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:50,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:50,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:50,721 INFO L124 PetriNetUnfolderBase]: 62/146 cut-off events. [2023-08-25 21:23:50,721 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-08-25 21:23:50,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 146 events. 62/146 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 389 event pairs, 10 based on Foata normal form. 4/150 useless extension candidates. Maximal degree in co-relation 706. Up to 60 conditions per place. [2023-08-25 21:23:50,722 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 34 selfloop transitions, 7 changer transitions 24/65 dead transitions. [2023-08-25 21:23:50,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 65 transitions, 455 flow [2023-08-25 21:23:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 21:23:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 21:23:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1621 transitions. [2023-08-25 21:23:50,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983779798476284 [2023-08-25 21:23:50,723 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1621 transitions. [2023-08-25 21:23:50,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1621 transitions. [2023-08-25 21:23:50,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:50,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1621 transitions. [2023-08-25 21:23:50,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.6923076923077) internal successors, (1621), 13 states have internal predecessors, (1621), 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 21:23:50,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 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 21:23:50,727 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 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 21:23:50,727 INFO L175 Difference]: Start difference. First operand has 77 places, 28 transitions, 211 flow. Second operand 13 states and 1621 transitions. [2023-08-25 21:23:50,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 65 transitions, 455 flow [2023-08-25 21:23:50,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 65 transitions, 430 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-25 21:23:50,729 INFO L231 Difference]: Finished difference. Result has 85 places, 23 transitions, 167 flow [2023-08-25 21:23:50,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=167, PETRI_PLACES=85, PETRI_TRANSITIONS=23} [2023-08-25 21:23:50,729 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2023-08-25 21:23:50,729 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 23 transitions, 167 flow [2023-08-25 21:23:50,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 122.0) internal successors, (2196), 18 states have internal predecessors, (2196), 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 21:23:50,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:23:50,729 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:23:50,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:50,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-25 21:23:50,934 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-25 21:23:50,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:23:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2025089213, now seen corresponding path program 36 times [2023-08-25 21:23:50,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:23:50,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90966070] [2023-08-25 21:23:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:23:50,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:23:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:23:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:23:51,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:23:51,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90966070] [2023-08-25 21:23:51,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90966070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:23:51,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759138248] [2023-08-25 21:23:51,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:23:51,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:23:51,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:23:51,090 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:23:51,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-25 21:23:51,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 21:23:51,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:23:51,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:23:51,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:23:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-25 21:23:51,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 21:23:51,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759138248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:23:51,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 21:23:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2023-08-25 21:23:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919690834] [2023-08-25 21:23:51,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:23:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:23:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:23:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:23:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-08-25 21:23:51,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 313 [2023-08-25 21:23:51,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 23 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:51,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:23:51,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 313 [2023-08-25 21:23:51,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:23:51,299 INFO L124 PetriNetUnfolderBase]: 44/100 cut-off events. [2023-08-25 21:23:51,299 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-25 21:23:51,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 100 events. 44/100 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 192 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 462. Up to 39 conditions per place. [2023-08-25 21:23:51,300 INFO L140 encePairwiseOnDemand]: 308/313 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-25 21:23:51,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 34 transitions, 258 flow [2023-08-25 21:23:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:23:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:23:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 747 transitions. [2023-08-25 21:23:51,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977635782747604 [2023-08-25 21:23:51,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 747 transitions. [2023-08-25 21:23:51,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 747 transitions. [2023-08-25 21:23:51,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:23:51,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 747 transitions. [2023-08-25 21:23:51,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 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 21:23:51,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:51,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 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 21:23:51,303 INFO L175 Difference]: Start difference. First operand has 85 places, 23 transitions, 167 flow. Second operand 6 states and 747 transitions. [2023-08-25 21:23:51,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 34 transitions, 258 flow [2023-08-25 21:23:51,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 34 transitions, 227 flow, removed 1 selfloop flow, removed 14 redundant places. [2023-08-25 21:23:51,304 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2023-08-25 21:23:51,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2023-08-25 21:23:51,304 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-08-25 21:23:51,304 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2023-08-25 21:23:51,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 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 21:23:51,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (23 of 24 remaining) [2023-08-25 21:23:51,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-25 21:23:51,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-25 21:23:51,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-25 21:23:51,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-25 21:23:51,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-08-25 21:23:51,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (8 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 24 remaining) [2023-08-25 21:23:51,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-08-25 21:23:51,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-25 21:23:51,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-25 21:23:51,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-25 21:23:51,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-25 21:23:51,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-25 21:23:51,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-25 21:23:51,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-08-25 21:23:51,514 INFO L445 BasicCegarLoop]: Path program histogram: [36, 2, 1, 1, 1] [2023-08-25 21:23:51,517 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 21:23:51,518 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 21:23:51,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 09:23:51 BasicIcfg [2023-08-25 21:23:51,523 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 21:23:51,523 INFO L158 Benchmark]: Toolchain (without parser) took 27915.96ms. Allocated memory was 385.9MB in the beginning and 578.8MB in the end (delta: 192.9MB). Free memory was 362.4MB in the beginning and 294.7MB in the end (delta: 67.7MB). Peak memory consumption was 262.5MB. Max. memory is 16.0GB. [2023-08-25 21:23:51,523 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory was 363.0MB in the beginning and 362.9MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:23:51,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.77ms. Allocated memory is still 385.9MB. Free memory was 362.0MB in the beginning and 351.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 21:23:51,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.51ms. Allocated memory is still 385.9MB. Free memory was 351.3MB in the beginning and 349.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:23:51,523 INFO L158 Benchmark]: Boogie Preprocessor took 27.83ms. Allocated memory is still 385.9MB. Free memory was 349.5MB in the beginning and 347.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:23:51,523 INFO L158 Benchmark]: RCFGBuilder took 386.72ms. Allocated memory is still 385.9MB. Free memory was 347.8MB in the beginning and 332.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-25 21:23:51,524 INFO L158 Benchmark]: TraceAbstraction took 27263.29ms. Allocated memory was 385.9MB in the beginning and 578.8MB in the end (delta: 192.9MB). Free memory was 331.9MB in the beginning and 294.7MB in the end (delta: 37.2MB). Peak memory consumption was 233.2MB. Max. memory is 16.0GB. [2023-08-25 21:23:51,525 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory was 363.0MB in the beginning and 362.9MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 195.77ms. Allocated memory is still 385.9MB. Free memory was 362.0MB in the beginning and 351.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.51ms. Allocated memory is still 385.9MB. Free memory was 351.3MB in the beginning and 349.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.83ms. Allocated memory is still 385.9MB. Free memory was 349.5MB in the beginning and 347.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 386.72ms. Allocated memory is still 385.9MB. Free memory was 347.8MB in the beginning and 332.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 27263.29ms. Allocated memory was 385.9MB in the beginning and 578.8MB in the end (delta: 192.9MB). Free memory was 331.9MB in the beginning and 294.7MB in the end (delta: 37.2MB). Peak memory consumption was 233.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 133 PlacesBefore, 33 PlacesAfterwards, 133 TransitionsBefore, 28 TransitionsAfterwards, 1976 CoEnabledTransitionPairs, 8 FixpointIterations, 87 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 169 TotalNumberOfCompositions, 2069 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2069, independent: 2069, independent conditional: 0, independent unconditional: 2069, 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: 1110, independent: 1110, independent conditional: 0, independent unconditional: 1110, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2069, independent: 959, independent conditional: 0, independent unconditional: 959, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1110, unknown conditional: 0, unknown unconditional: 1110] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, 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 - PositiveResult [Line: 41]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 49]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 59]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 60]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 66]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 176 locations, 24 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: 27.2s, OverallIterations: 41, TraceHistogramMax: 5, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1944 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1944 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 275 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4742 IncrementalHoareTripleChecker+Invalid, 5017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 275 mSolverCounterUnsat, 0 mSDtfsCounter, 4742 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1395 GetRequests, 885 SyntacticMatches, 60 SemanticMatches, 450 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6464occurred in iteration=24, InterpolantAutomatonStates: 362, 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: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1220 NumberOfCodeBlocks, 1208 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 1605 ConstructedInterpolants, 0 QuantifiedInterpolants, 6485 SizeOfPredicates, 12 NumberOfNonLiveVariables, 5815 ConjunctsInSsa, 372 ConjunctsInUnsatCore, 111 InterpolantComputations, 11 PerfectInterpolantSequences, 431/962 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 - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 21:23:51,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...