/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 09:01:26,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 09:01:26,149 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 [2023-08-26 09:01:26,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 09:01:26,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 09:01:26,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 09:01:26,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 09:01:26,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 09:01:26,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 09:01:26,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 09:01:26,194 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 09:01:26,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 09:01:26,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 09:01:26,196 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 09:01:26,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 09:01:26,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 09:01:26,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 09:01:26,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 09:01:26,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 09:01:26,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 09:01:26,197 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 09:01:26,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 09:01:26,198 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 09:01:26,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 09:01:26,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 09:01:26,199 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 09:01:26,199 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 09:01:26,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:01:26,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 09:01:26,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 09:01:26,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 09:01:26,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 09:01:26,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 09:01:26,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 09:01:26,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 09:01:26,202 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 09:01:26,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 09:01:26,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 09:01:26,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 09:01:26,516 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 09:01:26,518 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 09:01:26,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-08-26 09:01:27,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 09:01:27,920 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 09:01:27,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-08-26 09:01:27,926 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a85d6da79/49a950c4a19e46f79b27a80a3681e2f8/FLAG7a95c60eb [2023-08-26 09:01:27,937 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a85d6da79/49a950c4a19e46f79b27a80a3681e2f8 [2023-08-26 09:01:27,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 09:01:27,940 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 09:01:27,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 09:01:27,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 09:01:27,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 09:01:27,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:01:27" (1/1) ... [2023-08-26 09:01:27,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70af6e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:27, skipping insertion in model container [2023-08-26 09:01:27,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:01:27" (1/1) ... [2023-08-26 09:01:27,963 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 09:01:28,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:01:28,130 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 09:01:28,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:01:28,189 INFO L206 MainTranslator]: Completed translation [2023-08-26 09:01:28,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28 WrapperNode [2023-08-26 09:01:28,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 09:01:28,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 09:01:28,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 09:01:28,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 09:01:28,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,253 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 275 [2023-08-26 09:01:28,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 09:01:28,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 09:01:28,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 09:01:28,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 09:01:28,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 09:01:28,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 09:01:28,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 09:01:28,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 09:01:28,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (1/1) ... [2023-08-26 09:01:28,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:01:28,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:28,341 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) [2023-08-26 09:01:28,354 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 [2023-08-26 09:01:28,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 09:01:28,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 09:01:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 09:01:28,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 09:01:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 09:01:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 09:01:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 09:01:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 09:01:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 09:01:28,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 09:01:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 09:01:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 09:01:28,382 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 09:01:28,516 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 09:01:28,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 09:01:28,996 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 09:01:29,006 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 09:01:29,006 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 09:01:29,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:01:29 BoogieIcfgContainer [2023-08-26 09:01:29,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 09:01:29,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 09:01:29,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 09:01:29,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 09:01:29,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:01:27" (1/3) ... [2023-08-26 09:01:29,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6656b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:01:29, skipping insertion in model container [2023-08-26 09:01:29,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:28" (2/3) ... [2023-08-26 09:01:29,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6656b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:01:29, skipping insertion in model container [2023-08-26 09:01:29,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:01:29" (3/3) ... [2023-08-26 09:01:29,022 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-08-26 09:01:29,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 09:01:29,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-08-26 09:01:29,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 09:01:29,196 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 09:01:29,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 335 transitions, 686 flow [2023-08-26 09:01:29,324 INFO L124 PetriNetUnfolderBase]: 15/333 cut-off events. [2023-08-26 09:01:29,324 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:01:29,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 15/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 629 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2023-08-26 09:01:29,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 335 transitions, 686 flow [2023-08-26 09:01:29,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 324 transitions, 660 flow [2023-08-26 09:01:29,343 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 09:01:29,351 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 324 transitions, 660 flow [2023-08-26 09:01:29,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 324 transitions, 660 flow [2023-08-26 09:01:29,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 324 transitions, 660 flow [2023-08-26 09:01:29,411 INFO L124 PetriNetUnfolderBase]: 15/324 cut-off events. [2023-08-26 09:01:29,412 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:01:29,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 324 events. 15/324 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 609 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2023-08-26 09:01:29,425 INFO L119 LiptonReduction]: Number of co-enabled transitions 21296 [2023-08-26 09:01:37,358 INFO L134 LiptonReduction]: Checked pairs total: 25615 [2023-08-26 09:01:37,359 INFO L136 LiptonReduction]: Total number of compositions: 428 [2023-08-26 09:01:37,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 09:01:37,389 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;@6da08110, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 09:01:37,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-08-26 09:01:37,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 09:01:37,391 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 09:01:37,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:01:37,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:37,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 09:01:37,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:37,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1323, now seen corresponding path program 1 times [2023-08-26 09:01:37,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:37,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135849193] [2023-08-26 09:01:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:37,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:37,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:37,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135849193] [2023-08-26 09:01:37,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135849193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:37,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:37,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 09:01:37,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591062013] [2023-08-26 09:01:37,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:37,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 09:01:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 09:01:37,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 09:01:37,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 763 [2023-08-26 09:01:37,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 318.5) internal successors, (637), 2 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:37,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 763 [2023-08-26 09:01:37,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:37,630 INFO L124 PetriNetUnfolderBase]: 89/180 cut-off events. [2023-08-26 09:01:37,630 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-26 09:01:37,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 180 events. 89/180 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 695 event pairs, 49 based on Foata normal form. 39/172 useless extension candidates. Maximal degree in co-relation 292. Up to 147 conditions per place. [2023-08-26 09:01:37,633 INFO L140 encePairwiseOnDemand]: 729/763 looper letters, 16 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-26 09:01:37,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 88 flow [2023-08-26 09:01:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 09:01:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 09:01:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 686 transitions. [2023-08-26 09:01:37,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44954128440366975 [2023-08-26 09:01:37,653 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 686 transitions. [2023-08-26 09:01:37,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 686 transitions. [2023-08-26 09:01:37,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:37,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 686 transitions. [2023-08-26 09:01:37,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 343.0) internal successors, (686), 2 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 763.0) internal successors, (2289), 3 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,671 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 763.0) internal successors, (2289), 3 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,673 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 2 states and 686 transitions. [2023-08-26 09:01:37,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 88 flow [2023-08-26 09:01:37,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:01:37,678 INFO L231 Difference]: Finished difference. Result has 24 places, 22 transitions, 48 flow [2023-08-26 09:01:37,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, 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=2, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=22} [2023-08-26 09:01:37,683 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -34 predicate places. [2023-08-26 09:01:37,683 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 22 transitions, 48 flow [2023-08-26 09:01:37,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 318.5) internal successors, (637), 2 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:37,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 09:01:37,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 09:01:37,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:37,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1294106186, now seen corresponding path program 1 times [2023-08-26 09:01:37,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71927285] [2023-08-26 09:01:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:37,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:37,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:37,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71927285] [2023-08-26 09:01:37,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71927285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:37,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:37,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:01:37,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127739715] [2023-08-26 09:01:37,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:37,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:01:37,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:37,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:01:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:01:37,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 763 [2023-08-26 09:01:37,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:37,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 763 [2023-08-26 09:01:37,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:37,861 INFO L124 PetriNetUnfolderBase]: 113/200 cut-off events. [2023-08-26 09:01:37,861 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 09:01:37,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 200 events. 113/200 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 597 event pairs, 40 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 405. Up to 193 conditions per place. [2023-08-26 09:01:37,863 INFO L140 encePairwiseOnDemand]: 759/763 looper letters, 21 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-26 09:01:37,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 101 flow [2023-08-26 09:01:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:01:37,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:01:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 952 transitions. [2023-08-26 09:01:37,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41590214067278286 [2023-08-26 09:01:37,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 952 transitions. [2023-08-26 09:01:37,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 952 transitions. [2023-08-26 09:01:37,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:37,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 952 transitions. [2023-08-26 09:01:37,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 763.0) internal successors, (3052), 4 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 763.0) internal successors, (3052), 4 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,877 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 3 states and 952 transitions. [2023-08-26 09:01:37,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 101 flow [2023-08-26 09:01:37,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 101 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:01:37,879 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 58 flow [2023-08-26 09:01:37,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2023-08-26 09:01:37,880 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -33 predicate places. [2023-08-26 09:01:37,880 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 58 flow [2023-08-26 09:01:37,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:37,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:37,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:37,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 09:01:37,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:37,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:37,882 INFO L85 PathProgramCache]: Analyzing trace with hash -785232228, now seen corresponding path program 1 times [2023-08-26 09:01:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:37,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202277255] [2023-08-26 09:01:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:37,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:38,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202277255] [2023-08-26 09:01:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202277255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:38,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:38,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 09:01:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266937561] [2023-08-26 09:01:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:38,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:38,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:38,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 763 [2023-08-26 09:01:38,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 302.6) internal successors, (1513), 5 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) [2023-08-26 09:01:38,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:38,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 763 [2023-08-26 09:01:38,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:38,586 INFO L124 PetriNetUnfolderBase]: 131/270 cut-off events. [2023-08-26 09:01:38,587 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 09:01:38,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 270 events. 131/270 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1111 event pairs, 22 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 547. Up to 147 conditions per place. [2023-08-26 09:01:38,588 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 29 selfloop transitions, 5 changer transitions 6/46 dead transitions. [2023-08-26 09:01:38,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 46 transitions, 192 flow [2023-08-26 09:01:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:01:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:01:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1541 transitions. [2023-08-26 09:01:38,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039318479685452 [2023-08-26 09:01:38,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1541 transitions. [2023-08-26 09:01:38,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1541 transitions. [2023-08-26 09:01:38,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:38,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1541 transitions. [2023-08-26 09:01:38,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 308.2) internal successors, (1541), 5 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:38,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:38,606 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:38,606 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 58 flow. Second operand 5 states and 1541 transitions. [2023-08-26 09:01:38,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 46 transitions, 192 flow [2023-08-26 09:01:38,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:01:38,608 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 92 flow [2023-08-26 09:01:38,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-26 09:01:38,609 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -26 predicate places. [2023-08-26 09:01:38,609 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 92 flow [2023-08-26 09:01:38,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 302.6) internal successors, (1513), 5 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) [2023-08-26 09:01:38,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:38,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:38,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 09:01:38,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:38,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1136236368, now seen corresponding path program 2 times [2023-08-26 09:01:38,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:38,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707740688] [2023-08-26 09:01:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:38,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:38,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:38,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707740688] [2023-08-26 09:01:38,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707740688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:38,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:38,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 09:01:38,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872142716] [2023-08-26 09:01:38,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:38,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:38,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:38,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:38,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:38,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 763 [2023-08-26 09:01:38,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 302.6) internal successors, (1513), 5 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) [2023-08-26 09:01:38,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:38,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 763 [2023-08-26 09:01:38,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:39,032 INFO L124 PetriNetUnfolderBase]: 126/259 cut-off events. [2023-08-26 09:01:39,032 INFO L125 PetriNetUnfolderBase]: For 68/74 co-relation queries the response was YES. [2023-08-26 09:01:39,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 259 events. 126/259 cut-off events. For 68/74 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1054 event pairs, 22 based on Foata normal form. 3/233 useless extension candidates. Maximal degree in co-relation 641. Up to 147 conditions per place. [2023-08-26 09:01:39,034 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 26 selfloop transitions, 6 changer transitions 6/44 dead transitions. [2023-08-26 09:01:39,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 217 flow [2023-08-26 09:01:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:01:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:01:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1538 transitions. [2023-08-26 09:01:39,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40314547837483616 [2023-08-26 09:01:39,039 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1538 transitions. [2023-08-26 09:01:39,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1538 transitions. [2023-08-26 09:01:39,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:39,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1538 transitions. [2023-08-26 09:01:39,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.6) internal successors, (1538), 5 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,052 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,052 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 92 flow. Second operand 5 states and 1538 transitions. [2023-08-26 09:01:39,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 217 flow [2023-08-26 09:01:39,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 215 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 09:01:39,057 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 124 flow [2023-08-26 09:01:39,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-26 09:01:39,059 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -21 predicate places. [2023-08-26 09:01:39,060 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 124 flow [2023-08-26 09:01:39,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 302.6) internal successors, (1513), 5 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) [2023-08-26 09:01:39,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:39,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:39,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 09:01:39,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:39,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:39,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1987507590, now seen corresponding path program 1 times [2023-08-26 09:01:39,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:39,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890844614] [2023-08-26 09:01:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:39,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890844614] [2023-08-26 09:01:39,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890844614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:39,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:39,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:01:39,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323745391] [2023-08-26 09:01:39,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:39,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:39,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:39,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:39,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:39,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:39,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:39,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:39,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:39,275 INFO L124 PetriNetUnfolderBase]: 217/412 cut-off events. [2023-08-26 09:01:39,278 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-26 09:01:39,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 412 events. 217/412 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1859 event pairs, 70 based on Foata normal form. 6/371 useless extension candidates. Maximal degree in co-relation 1110. Up to 173 conditions per place. [2023-08-26 09:01:39,280 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 41 selfloop transitions, 5 changer transitions 9/59 dead transitions. [2023-08-26 09:01:39,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 349 flow [2023-08-26 09:01:39,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:01:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:01:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1566 transitions. [2023-08-26 09:01:39,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41048492791612057 [2023-08-26 09:01:39,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1566 transitions. [2023-08-26 09:01:39,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1566 transitions. [2023-08-26 09:01:39,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:39,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1566 transitions. [2023-08-26 09:01:39,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.2) internal successors, (1566), 5 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,298 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 124 flow. Second operand 5 states and 1566 transitions. [2023-08-26 09:01:39,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 349 flow [2023-08-26 09:01:39,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 332 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-26 09:01:39,305 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 149 flow [2023-08-26 09:01:39,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-26 09:01:39,307 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -17 predicate places. [2023-08-26 09:01:39,307 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 149 flow [2023-08-26 09:01:39,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:39,308 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:39,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 09:01:39,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:39,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1723219068, now seen corresponding path program 2 times [2023-08-26 09:01:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:39,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139750233] [2023-08-26 09:01:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:39,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:39,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:39,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139750233] [2023-08-26 09:01:39,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139750233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:39,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:39,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:01:39,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69505633] [2023-08-26 09:01:39,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:39,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:39,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:39,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:39,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:39,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:39,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:39,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:39,534 INFO L124 PetriNetUnfolderBase]: 254/474 cut-off events. [2023-08-26 09:01:39,534 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2023-08-26 09:01:39,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 474 events. 254/474 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2130 event pairs, 132 based on Foata normal form. 6/466 useless extension candidates. Maximal degree in co-relation 1435. Up to 362 conditions per place. [2023-08-26 09:01:39,537 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 34 selfloop transitions, 9 changer transitions 7/54 dead transitions. [2023-08-26 09:01:39,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 361 flow [2023-08-26 09:01:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:01:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:01:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1560 transitions. [2023-08-26 09:01:39,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089121887287025 [2023-08-26 09:01:39,543 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1560 transitions. [2023-08-26 09:01:39,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1560 transitions. [2023-08-26 09:01:39,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:39,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1560 transitions. [2023-08-26 09:01:39,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,553 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,553 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 149 flow. Second operand 5 states and 1560 transitions. [2023-08-26 09:01:39,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 361 flow [2023-08-26 09:01:39,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 340 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-26 09:01:39,558 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 206 flow [2023-08-26 09:01:39,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-08-26 09:01:39,560 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -14 predicate places. [2023-08-26 09:01:39,562 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 206 flow [2023-08-26 09:01:39,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:39,564 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:39,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 09:01:39,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:39,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash -51354616, now seen corresponding path program 3 times [2023-08-26 09:01:39,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:39,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753202074] [2023-08-26 09:01:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:39,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:39,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753202074] [2023-08-26 09:01:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753202074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462991024] [2023-08-26 09:01:39,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:01:39,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:39,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:39,649 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) [2023-08-26 09:01:39,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 09:01:39,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:01:39,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:39,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 09:01:39,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:39,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462991024] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:39,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:39,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-26 09:01:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898513986] [2023-08-26 09:01:39,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 09:01:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 09:01:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 09:01:39,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:39,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 206 flow. Second operand has 10 states, 10 states have (on average 306.7) internal successors, (3067), 10 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:39,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:39,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:39,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:40,089 INFO L124 PetriNetUnfolderBase]: 275/510 cut-off events. [2023-08-26 09:01:40,089 INFO L125 PetriNetUnfolderBase]: For 794/797 co-relation queries the response was YES. [2023-08-26 09:01:40,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 510 events. 275/510 cut-off events. For 794/797 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2344 event pairs, 83 based on Foata normal form. 8/499 useless extension candidates. Maximal degree in co-relation 1665. Up to 276 conditions per place. [2023-08-26 09:01:40,093 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 54 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2023-08-26 09:01:40,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 555 flow [2023-08-26 09:01:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 09:01:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 09:01:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2491 transitions. [2023-08-26 09:01:40,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40809305373525556 [2023-08-26 09:01:40,100 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2491 transitions. [2023-08-26 09:01:40,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2491 transitions. [2023-08-26 09:01:40,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:40,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2491 transitions. [2023-08-26 09:01:40,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.375) internal successors, (2491), 8 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 763.0) internal successors, (6867), 9 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,114 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 763.0) internal successors, (6867), 9 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,114 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 206 flow. Second operand 8 states and 2491 transitions. [2023-08-26 09:01:40,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 555 flow [2023-08-26 09:01:40,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 555 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:01:40,119 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 364 flow [2023-08-26 09:01:40,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-08-26 09:01:40,120 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-08-26 09:01:40,120 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 364 flow [2023-08-26 09:01:40,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 306.7) internal successors, (3067), 10 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:40,133 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:40,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 09:01:40,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:40,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:40,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:40,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1724951012, now seen corresponding path program 4 times [2023-08-26 09:01:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:40,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114560031] [2023-08-26 09:01:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:40,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114560031] [2023-08-26 09:01:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114560031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:40,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:01:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124423735] [2023-08-26 09:01:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:40,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:40,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 364 flow. Second operand has 5 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:40,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:40,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:40,555 INFO L124 PetriNetUnfolderBase]: 266/494 cut-off events. [2023-08-26 09:01:40,555 INFO L125 PetriNetUnfolderBase]: For 1441/1458 co-relation queries the response was YES. [2023-08-26 09:01:40,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 494 events. 266/494 cut-off events. For 1441/1458 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2274 event pairs, 100 based on Foata normal form. 18/487 useless extension candidates. Maximal degree in co-relation 1886. Up to 294 conditions per place. [2023-08-26 09:01:40,559 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 36 selfloop transitions, 14 changer transitions 7/61 dead transitions. [2023-08-26 09:01:40,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 525 flow [2023-08-26 09:01:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:01:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:01:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1560 transitions. [2023-08-26 09:01:40,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089121887287025 [2023-08-26 09:01:40,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1560 transitions. [2023-08-26 09:01:40,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1560 transitions. [2023-08-26 09:01:40,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:40,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1560 transitions. [2023-08-26 09:01:40,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,571 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 364 flow. Second operand 5 states and 1560 transitions. [2023-08-26 09:01:40,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 525 flow [2023-08-26 09:01:40,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 499 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-26 09:01:40,575 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 344 flow [2023-08-26 09:01:40,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-08-26 09:01:40,576 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-26 09:01:40,576 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 344 flow [2023-08-26 09:01:40,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:40,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:40,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 09:01:40,577 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:40,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash -625068852, now seen corresponding path program 5 times [2023-08-26 09:01:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:40,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408300341] [2023-08-26 09:01:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:40,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:40,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:40,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408300341] [2023-08-26 09:01:40,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408300341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:40,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878371820] [2023-08-26 09:01:40,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:01:40,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:40,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:40,705 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) [2023-08-26 09:01:40,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 09:01:40,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:01:40,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:40,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 09:01:40,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:40,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:40,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878371820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:40,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:40,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-26 09:01:40,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353084221] [2023-08-26 09:01:40,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:40,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 09:01:40,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 09:01:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 09:01:40,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:40,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:40,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:40,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:41,092 INFO L124 PetriNetUnfolderBase]: 289/548 cut-off events. [2023-08-26 09:01:41,092 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2023-08-26 09:01:41,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 548 events. 289/548 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2552 event pairs, 51 based on Foata normal form. 6/544 useless extension candidates. Maximal degree in co-relation 2041. Up to 125 conditions per place. [2023-08-26 09:01:41,096 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 52 selfloop transitions, 47 changer transitions 1/104 dead transitions. [2023-08-26 09:01:41,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 104 transitions, 837 flow [2023-08-26 09:01:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:01:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:01:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3415 transitions. [2023-08-26 09:01:41,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40688669129036104 [2023-08-26 09:01:41,105 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3415 transitions. [2023-08-26 09:01:41,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3415 transitions. [2023-08-26 09:01:41,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:41,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3415 transitions. [2023-08-26 09:01:41,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.45454545454544) internal successors, (3415), 11 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,124 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,124 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 344 flow. Second operand 11 states and 3415 transitions. [2023-08-26 09:01:41,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 104 transitions, 837 flow [2023-08-26 09:01:41,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 772 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-26 09:01:41,130 INFO L231 Difference]: Finished difference. Result has 62 places, 70 transitions, 562 flow [2023-08-26 09:01:41,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=562, PETRI_PLACES=62, PETRI_TRANSITIONS=70} [2023-08-26 09:01:41,131 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-08-26 09:01:41,132 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 70 transitions, 562 flow [2023-08-26 09:01:41,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.0) internal successors, (2456), 8 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:41,132 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:41,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:41,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-26 09:01:41,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:41,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash 940938830, now seen corresponding path program 6 times [2023-08-26 09:01:41,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:41,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708228246] [2023-08-26 09:01:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:41,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:41,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:41,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708228246] [2023-08-26 09:01:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708228246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:41,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:41,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:01:41,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702731059] [2023-08-26 09:01:41,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:41,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:41,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:41,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 70 transitions, 562 flow. Second operand has 5 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:41,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:41,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:41,572 INFO L124 PetriNetUnfolderBase]: 267/511 cut-off events. [2023-08-26 09:01:41,572 INFO L125 PetriNetUnfolderBase]: For 1624/1640 co-relation queries the response was YES. [2023-08-26 09:01:41,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2071 conditions, 511 events. 267/511 cut-off events. For 1624/1640 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2312 event pairs, 119 based on Foata normal form. 24/527 useless extension candidates. Maximal degree in co-relation 2050. Up to 357 conditions per place. [2023-08-26 09:01:41,576 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 57 selfloop transitions, 20 changer transitions 1/82 dead transitions. [2023-08-26 09:01:41,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 768 flow [2023-08-26 09:01:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 09:01:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 09:01:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1867 transitions. [2023-08-26 09:01:41,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40782000873743995 [2023-08-26 09:01:41,582 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1867 transitions. [2023-08-26 09:01:41,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1867 transitions. [2023-08-26 09:01:41,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:41,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1867 transitions. [2023-08-26 09:01:41,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 763.0) internal successors, (5341), 7 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 763.0) internal successors, (5341), 7 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,591 INFO L175 Difference]: Start difference. First operand has 62 places, 70 transitions, 562 flow. Second operand 6 states and 1867 transitions. [2023-08-26 09:01:41,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 768 flow [2023-08-26 09:01:41,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 715 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-08-26 09:01:41,598 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 548 flow [2023-08-26 09:01:41,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2023-08-26 09:01:41,599 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-08-26 09:01:41,600 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 548 flow [2023-08-26 09:01:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:41,600 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:41,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 09:01:41,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:41,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash -585773893, now seen corresponding path program 1 times [2023-08-26 09:01:41,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:41,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870821823] [2023-08-26 09:01:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:41,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:41,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870821823] [2023-08-26 09:01:41,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870821823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:41,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:41,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 09:01:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147040996] [2023-08-26 09:01:41,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:41,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:01:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:01:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:01:41,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:41,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 306.8333333333333) internal successors, (1841), 6 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:41,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:41,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:41,821 INFO L124 PetriNetUnfolderBase]: 290/545 cut-off events. [2023-08-26 09:01:41,821 INFO L125 PetriNetUnfolderBase]: For 1578/1592 co-relation queries the response was YES. [2023-08-26 09:01:41,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 545 events. 290/545 cut-off events. For 1578/1592 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2574 event pairs, 42 based on Foata normal form. 24/561 useless extension candidates. Maximal degree in co-relation 2105. Up to 231 conditions per place. [2023-08-26 09:01:41,826 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 70 selfloop transitions, 30 changer transitions 0/104 dead transitions. [2023-08-26 09:01:41,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 932 flow [2023-08-26 09:01:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:01:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:01:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2181 transitions. [2023-08-26 09:01:41,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40835049616176744 [2023-08-26 09:01:41,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2181 transitions. [2023-08-26 09:01:41,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2181 transitions. [2023-08-26 09:01:41,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:41,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2181 transitions. [2023-08-26 09:01:41,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 311.57142857142856) internal successors, (2181), 7 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,842 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 548 flow. Second operand 7 states and 2181 transitions. [2023-08-26 09:01:41,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 932 flow [2023-08-26 09:01:41,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 855 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-26 09:01:41,849 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 631 flow [2023-08-26 09:01:41,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=631, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-08-26 09:01:41,850 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-08-26 09:01:41,850 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 631 flow [2023-08-26 09:01:41,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.8333333333333) internal successors, (1841), 6 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:41,851 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 09:01:41,851 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:41,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:41,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1422702219, now seen corresponding path program 2 times [2023-08-26 09:01:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:41,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828663336] [2023-08-26 09:01:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:41,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:41,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828663336] [2023-08-26 09:01:41,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828663336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:41,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:41,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:01:41,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40161949] [2023-08-26 09:01:41,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:41,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:41,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:41,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:41,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:41,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:41,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 631 flow. Second operand has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:41,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:41,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:41,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:42,085 INFO L124 PetriNetUnfolderBase]: 286/548 cut-off events. [2023-08-26 09:01:42,085 INFO L125 PetriNetUnfolderBase]: For 1776/1798 co-relation queries the response was YES. [2023-08-26 09:01:42,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 548 events. 286/548 cut-off events. For 1776/1798 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2629 event pairs, 100 based on Foata normal form. 16/551 useless extension candidates. Maximal degree in co-relation 2111. Up to 297 conditions per place. [2023-08-26 09:01:42,089 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 60 selfloop transitions, 21 changer transitions 0/85 dead transitions. [2023-08-26 09:01:42,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 836 flow [2023-08-26 09:01:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:01:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:01:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1555 transitions. [2023-08-26 09:01:42,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076015727391874 [2023-08-26 09:01:42,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1555 transitions. [2023-08-26 09:01:42,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1555 transitions. [2023-08-26 09:01:42,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:42,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1555 transitions. [2023-08-26 09:01:42,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,101 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 631 flow. Second operand 5 states and 1555 transitions. [2023-08-26 09:01:42,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 836 flow [2023-08-26 09:01:42,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 779 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-26 09:01:42,109 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 619 flow [2023-08-26 09:01:42,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=619, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-08-26 09:01:42,110 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-26 09:01:42,110 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 619 flow [2023-08-26 09:01:42,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:42,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:42,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 09:01:42,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:42,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash -90118457, now seen corresponding path program 3 times [2023-08-26 09:01:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:42,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915974160] [2023-08-26 09:01:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:42,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:42,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915974160] [2023-08-26 09:01:42,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915974160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560354422] [2023-08-26 09:01:42,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:01:42,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:42,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:42,200 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) [2023-08-26 09:01:42,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 09:01:42,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:01:42,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:42,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 09:01:42,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:42,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:42,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560354422] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:42,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:42,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-08-26 09:01:42,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137663428] [2023-08-26 09:01:42,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:42,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:01:42,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:42,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:01:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:01:42,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:42,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 619 flow. Second operand has 11 states, 11 states have (on average 306.3636363636364) internal successors, (3370), 11 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:42,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:42,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:42,655 INFO L124 PetriNetUnfolderBase]: 324/627 cut-off events. [2023-08-26 09:01:42,655 INFO L125 PetriNetUnfolderBase]: For 1941/1955 co-relation queries the response was YES. [2023-08-26 09:01:42,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 627 events. 324/627 cut-off events. For 1941/1955 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3099 event pairs, 58 based on Foata normal form. 26/643 useless extension candidates. Maximal degree in co-relation 2349. Up to 174 conditions per place. [2023-08-26 09:01:42,661 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 79 selfloop transitions, 37 changer transitions 0/120 dead transitions. [2023-08-26 09:01:42,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 1078 flow [2023-08-26 09:01:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:01:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:01:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3413 transitions. [2023-08-26 09:01:42,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40664839747408554 [2023-08-26 09:01:42,669 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3413 transitions. [2023-08-26 09:01:42,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3413 transitions. [2023-08-26 09:01:42,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:42,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3413 transitions. [2023-08-26 09:01:42,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.27272727272725) internal successors, (3413), 11 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,687 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,687 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 619 flow. Second operand 11 states and 3413 transitions. [2023-08-26 09:01:42,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 1078 flow [2023-08-26 09:01:42,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 1055 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 09:01:42,694 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 816 flow [2023-08-26 09:01:42,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=816, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2023-08-26 09:01:42,695 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-08-26 09:01:42,695 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 816 flow [2023-08-26 09:01:42,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 306.3636363636364) internal successors, (3370), 11 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:42,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:42,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:42,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:42,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:42,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:42,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1048920837, now seen corresponding path program 4 times [2023-08-26 09:01:42,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:42,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864272503] [2023-08-26 09:01:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:42,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:42,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:42,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864272503] [2023-08-26 09:01:42,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864272503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:42,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:42,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:01:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903737518] [2023-08-26 09:01:42,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:42,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:42,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:42,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 816 flow. Second operand has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:42,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:42,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:42,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:43,111 INFO L124 PetriNetUnfolderBase]: 324/637 cut-off events. [2023-08-26 09:01:43,111 INFO L125 PetriNetUnfolderBase]: For 2733/2755 co-relation queries the response was YES. [2023-08-26 09:01:43,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2611 conditions, 637 events. 324/637 cut-off events. For 2733/2755 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3182 event pairs, 90 based on Foata normal form. 8/634 useless extension candidates. Maximal degree in co-relation 2587. Up to 334 conditions per place. [2023-08-26 09:01:43,117 INFO L140 encePairwiseOnDemand]: 758/763 looper letters, 72 selfloop transitions, 27 changer transitions 3/106 dead transitions. [2023-08-26 09:01:43,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 1116 flow [2023-08-26 09:01:43,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:01:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:01:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1562 transitions. [2023-08-26 09:01:43,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094364351245085 [2023-08-26 09:01:43,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1562 transitions. [2023-08-26 09:01:43,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1562 transitions. [2023-08-26 09:01:43,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:43,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1562 transitions. [2023-08-26 09:01:43,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.4) internal successors, (1562), 5 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,130 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 816 flow. Second operand 5 states and 1562 transitions. [2023-08-26 09:01:43,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 1116 flow [2023-08-26 09:01:43,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 1036 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-08-26 09:01:43,141 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 806 flow [2023-08-26 09:01:43,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=806, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2023-08-26 09:01:43,142 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2023-08-26 09:01:43,142 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 806 flow [2023-08-26 09:01:43,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:43,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:43,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 09:01:43,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:43,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash -553252555, now seen corresponding path program 5 times [2023-08-26 09:01:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:43,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800363242] [2023-08-26 09:01:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:43,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:43,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800363242] [2023-08-26 09:01:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800363242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:01:43,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:01:43,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:01:43,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166593168] [2023-08-26 09:01:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:01:43,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:01:43,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:01:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:01:43,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:43,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:43,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:43,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:43,339 INFO L124 PetriNetUnfolderBase]: 311/608 cut-off events. [2023-08-26 09:01:43,339 INFO L125 PetriNetUnfolderBase]: For 3000/3022 co-relation queries the response was YES. [2023-08-26 09:01:43,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 608 events. 311/608 cut-off events. For 3000/3022 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2992 event pairs, 112 based on Foata normal form. 16/607 useless extension candidates. Maximal degree in co-relation 2446. Up to 408 conditions per place. [2023-08-26 09:01:43,345 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 60 selfloop transitions, 29 changer transitions 0/93 dead transitions. [2023-08-26 09:01:43,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 93 transitions, 994 flow [2023-08-26 09:01:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:01:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:01:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2023-08-26 09:01:43,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40786369593709043 [2023-08-26 09:01:43,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2023-08-26 09:01:43,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2023-08-26 09:01:43,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:43,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2023-08-26 09:01:43,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,356 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 763.0) internal successors, (4578), 6 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,356 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 806 flow. Second operand 5 states and 1556 transitions. [2023-08-26 09:01:43,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 93 transitions, 994 flow [2023-08-26 09:01:43,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 942 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 09:01:43,364 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 802 flow [2023-08-26 09:01:43,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=802, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-08-26 09:01:43,365 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-08-26 09:01:43,365 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 802 flow [2023-08-26 09:01:43,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:43,366 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:43,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 09:01:43,366 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:43,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:43,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1588026089, now seen corresponding path program 6 times [2023-08-26 09:01:43,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:43,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451236470] [2023-08-26 09:01:43,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:43,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:43,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:43,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451236470] [2023-08-26 09:01:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451236470] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:43,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369403950] [2023-08-26 09:01:43,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:01:43,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:43,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:43,460 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) [2023-08-26 09:01:43,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 09:01:43,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 09:01:43,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:43,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 09:01:43,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:43,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:43,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369403950] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:43,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:43,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-08-26 09:01:43,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198106034] [2023-08-26 09:01:43,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:43,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:01:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:01:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:01:43,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:43,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 802 flow. Second operand has 11 states, 11 states have (on average 306.3636363636364) internal successors, (3370), 11 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:43,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:43,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:43,831 INFO L124 PetriNetUnfolderBase]: 281/552 cut-off events. [2023-08-26 09:01:43,832 INFO L125 PetriNetUnfolderBase]: For 2923/2945 co-relation queries the response was YES. [2023-08-26 09:01:43,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2259 conditions, 552 events. 281/552 cut-off events. For 2923/2945 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2673 event pairs, 98 based on Foata normal form. 24/559 useless extension candidates. Maximal degree in co-relation 2234. Up to 364 conditions per place. [2023-08-26 09:01:43,837 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 64 selfloop transitions, 30 changer transitions 1/99 dead transitions. [2023-08-26 09:01:43,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 99 transitions, 1033 flow [2023-08-26 09:01:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:01:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:01:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2175 transitions. [2023-08-26 09:01:43,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072271110278974 [2023-08-26 09:01:43,842 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2175 transitions. [2023-08-26 09:01:43,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2175 transitions. [2023-08-26 09:01:43,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:43,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2175 transitions. [2023-08-26 09:01:43,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 310.7142857142857) internal successors, (2175), 7 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,852 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,852 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 802 flow. Second operand 7 states and 2175 transitions. [2023-08-26 09:01:43,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 99 transitions, 1033 flow [2023-08-26 09:01:43,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 99 transitions, 970 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:01:43,861 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 794 flow [2023-08-26 09:01:43,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=794, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2023-08-26 09:01:43,861 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-08-26 09:01:43,861 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 794 flow [2023-08-26 09:01:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 306.3636363636364) internal successors, (3370), 11 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:43,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:43,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:43,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 09:01:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 09:01:44,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:44,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 399691671, now seen corresponding path program 1 times [2023-08-26 09:01:44,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544318391] [2023-08-26 09:01:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544318391] [2023-08-26 09:01:44,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544318391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860685058] [2023-08-26 09:01:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:44,401 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) [2023-08-26 09:01:44,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 09:01:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:44,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:44,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:44,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:44,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860685058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:44,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:44,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-26 09:01:44,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769113894] [2023-08-26 09:01:44,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:01:44,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:44,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:01:44,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:01:44,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:44,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 794 flow. Second operand has 16 states, 16 states have (on average 292.375) internal successors, (4678), 16 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:44,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:44,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:44,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:45,342 INFO L124 PetriNetUnfolderBase]: 392/778 cut-off events. [2023-08-26 09:01:45,343 INFO L125 PetriNetUnfolderBase]: For 3074/3083 co-relation queries the response was YES. [2023-08-26 09:01:45,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 778 events. 392/778 cut-off events. For 3074/3083 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4129 event pairs, 44 based on Foata normal form. 6/752 useless extension candidates. Maximal degree in co-relation 3067. Up to 409 conditions per place. [2023-08-26 09:01:45,350 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 92 selfloop transitions, 34 changer transitions 6/146 dead transitions. [2023-08-26 09:01:45,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 146 transitions, 1394 flow [2023-08-26 09:01:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:01:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:01:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2677 transitions. [2023-08-26 09:01:45,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38983544488131644 [2023-08-26 09:01:45,357 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2677 transitions. [2023-08-26 09:01:45,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2677 transitions. [2023-08-26 09:01:45,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:45,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2677 transitions. [2023-08-26 09:01:45,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 297.44444444444446) internal successors, (2677), 9 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:45,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:45,372 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:45,372 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 794 flow. Second operand 9 states and 2677 transitions. [2023-08-26 09:01:45,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 146 transitions, 1394 flow [2023-08-26 09:01:45,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 146 transitions, 1239 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-08-26 09:01:45,381 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 987 flow [2023-08-26 09:01:45,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=987, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2023-08-26 09:01:45,382 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 32 predicate places. [2023-08-26 09:01:45,382 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 987 flow [2023-08-26 09:01:45,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 292.375) internal successors, (4678), 16 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:45,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:45,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:45,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:45,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 09:01:45,590 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:45,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:45,590 INFO L85 PathProgramCache]: Analyzing trace with hash -361387481, now seen corresponding path program 2 times [2023-08-26 09:01:45,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:45,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167222639] [2023-08-26 09:01:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:45,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:45,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:45,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167222639] [2023-08-26 09:01:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167222639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:45,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052752499] [2023-08-26 09:01:45,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:01:45,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:45,874 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) [2023-08-26 09:01:45,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 09:01:45,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:01:45,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:45,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:45,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:46,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:46,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052752499] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:46,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:46,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 09:01:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123339666] [2023-08-26 09:01:46,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 09:01:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 09:01:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-08-26 09:01:46,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:46,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 987 flow. Second operand has 14 states, 14 states have (on average 292.64285714285717) internal successors, (4097), 14 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:46,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:46,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:46,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:46,761 INFO L124 PetriNetUnfolderBase]: 389/769 cut-off events. [2023-08-26 09:01:46,761 INFO L125 PetriNetUnfolderBase]: For 2927/2941 co-relation queries the response was YES. [2023-08-26 09:01:46,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 769 events. 389/769 cut-off events. For 2927/2941 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4077 event pairs, 48 based on Foata normal form. 6/745 useless extension candidates. Maximal degree in co-relation 3146. Up to 496 conditions per place. [2023-08-26 09:01:46,768 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 86 selfloop transitions, 34 changer transitions 6/140 dead transitions. [2023-08-26 09:01:46,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 1382 flow [2023-08-26 09:01:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:01:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:01:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2667 transitions. [2023-08-26 09:01:46,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38837920489296635 [2023-08-26 09:01:46,775 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2667 transitions. [2023-08-26 09:01:46,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2667 transitions. [2023-08-26 09:01:46,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:46,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2667 transitions. [2023-08-26 09:01:46,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 296.3333333333333) internal successors, (2667), 9 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:46,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:46,787 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:46,787 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 987 flow. Second operand 9 states and 2667 transitions. [2023-08-26 09:01:46,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 1382 flow [2023-08-26 09:01:46,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 140 transitions, 1355 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-26 09:01:46,797 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 1104 flow [2023-08-26 09:01:46,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1104, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2023-08-26 09:01:46,798 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 40 predicate places. [2023-08-26 09:01:46,798 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 1104 flow [2023-08-26 09:01:46,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 292.64285714285717) internal successors, (4097), 14 states have internal predecessors, (4097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:46,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:46,799 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:46,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:47,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 09:01:47,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:47,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash 391931597, now seen corresponding path program 3 times [2023-08-26 09:01:47,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:47,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487827043] [2023-08-26 09:01:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:47,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:47,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:47,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487827043] [2023-08-26 09:01:47,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487827043] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:47,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009371750] [2023-08-26 09:01:47,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:01:47,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:47,365 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) [2023-08-26 09:01:47,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 09:01:47,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:01:47,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:47,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:47,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:47,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:47,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009371750] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:47,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:47,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-26 09:01:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607878775] [2023-08-26 09:01:47,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:01:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:01:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:01:47,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:47,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions, 1104 flow. Second operand has 16 states, 16 states have (on average 292.6875) internal successors, (4683), 16 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:47,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:47,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:47,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:48,182 INFO L124 PetriNetUnfolderBase]: 386/760 cut-off events. [2023-08-26 09:01:48,182 INFO L125 PetriNetUnfolderBase]: For 3439/3455 co-relation queries the response was YES. [2023-08-26 09:01:48,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3275 conditions, 760 events. 386/760 cut-off events. For 3439/3455 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4036 event pairs, 44 based on Foata normal form. 3/733 useless extension candidates. Maximal degree in co-relation 3248. Up to 409 conditions per place. [2023-08-26 09:01:48,189 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 87 selfloop transitions, 40 changer transitions 6/147 dead transitions. [2023-08-26 09:01:48,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 1511 flow [2023-08-26 09:01:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:01:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:01:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2963 transitions. [2023-08-26 09:01:48,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38833551769331587 [2023-08-26 09:01:48,194 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2963 transitions. [2023-08-26 09:01:48,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2963 transitions. [2023-08-26 09:01:48,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:48,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2963 transitions. [2023-08-26 09:01:48,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 296.3) internal successors, (2963), 10 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:48,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 763.0) internal successors, (8393), 11 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:48,206 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 763.0) internal successors, (8393), 11 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:48,206 INFO L175 Difference]: Start difference. First operand has 98 places, 110 transitions, 1104 flow. Second operand 10 states and 2963 transitions. [2023-08-26 09:01:48,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 1511 flow [2023-08-26 09:01:48,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1445 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-26 09:01:48,217 INFO L231 Difference]: Finished difference. Result has 103 places, 112 transitions, 1161 flow [2023-08-26 09:01:48,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1161, PETRI_PLACES=103, PETRI_TRANSITIONS=112} [2023-08-26 09:01:48,218 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2023-08-26 09:01:48,218 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 112 transitions, 1161 flow [2023-08-26 09:01:48,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 292.6875) internal successors, (4683), 16 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:48,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:48,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:48,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:48,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:48,428 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:48,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash -419624911, now seen corresponding path program 4 times [2023-08-26 09:01:48,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:48,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659853084] [2023-08-26 09:01:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:48,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:48,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:48,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659853084] [2023-08-26 09:01:48,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659853084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:48,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668248085] [2023-08-26 09:01:48,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:01:48,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:48,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:48,731 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) [2023-08-26 09:01:48,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 09:01:48,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:01:48,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:48,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:48,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:49,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:49,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668248085] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:49,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-26 09:01:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694761920] [2023-08-26 09:01:49,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:49,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:01:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:49,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:01:49,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:01:49,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:49,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 112 transitions, 1161 flow. Second operand has 16 states, 16 states have (on average 292.5625) internal successors, (4681), 16 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:49,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:49,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:49,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:49,623 INFO L124 PetriNetUnfolderBase]: 454/896 cut-off events. [2023-08-26 09:01:49,623 INFO L125 PetriNetUnfolderBase]: For 4348/4358 co-relation queries the response was YES. [2023-08-26 09:01:49,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 896 events. 454/896 cut-off events. For 4348/4358 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4911 event pairs, 52 based on Foata normal form. 3/867 useless extension candidates. Maximal degree in co-relation 3876. Up to 471 conditions per place. [2023-08-26 09:01:49,632 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 110 selfloop transitions, 47 changer transitions 6/177 dead transitions. [2023-08-26 09:01:49,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 177 transitions, 1819 flow [2023-08-26 09:01:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:01:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:01:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3559 transitions. [2023-08-26 09:01:49,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887068588903451 [2023-08-26 09:01:49,639 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3559 transitions. [2023-08-26 09:01:49,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3559 transitions. [2023-08-26 09:01:49,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:49,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3559 transitions. [2023-08-26 09:01:49,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 296.5833333333333) internal successors, (3559), 12 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:49,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:49,653 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:49,653 INFO L175 Difference]: Start difference. First operand has 103 places, 112 transitions, 1161 flow. Second operand 12 states and 3559 transitions. [2023-08-26 09:01:49,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 177 transitions, 1819 flow [2023-08-26 09:01:49,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1723 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-26 09:01:49,669 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 1380 flow [2023-08-26 09:01:49,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1380, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2023-08-26 09:01:49,670 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2023-08-26 09:01:49,670 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 1380 flow [2023-08-26 09:01:49,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 292.5625) internal successors, (4681), 16 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:49,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:49,671 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:49,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:49,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:49,878 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:49,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:49,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1896505977, now seen corresponding path program 5 times [2023-08-26 09:01:49,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:49,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75560987] [2023-08-26 09:01:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:49,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75560987] [2023-08-26 09:01:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75560987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013818647] [2023-08-26 09:01:50,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:01:50,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:50,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:50,155 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) [2023-08-26 09:01:50,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 09:01:50,276 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:01:50,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:50,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:50,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:50,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:50,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013818647] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:50,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:50,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-26 09:01:50,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417809486] [2023-08-26 09:01:50,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:50,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:01:50,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:01:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:01:50,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:50,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 1380 flow. Second operand has 15 states, 15 states have (on average 292.6666666666667) internal successors, (4390), 15 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:50,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:50,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:50,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:51,036 INFO L124 PetriNetUnfolderBase]: 453/889 cut-off events. [2023-08-26 09:01:51,036 INFO L125 PetriNetUnfolderBase]: For 4876/4890 co-relation queries the response was YES. [2023-08-26 09:01:51,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4101 conditions, 889 events. 453/889 cut-off events. For 4876/4890 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4842 event pairs, 54 based on Foata normal form. 6/863 useless extension candidates. Maximal degree in co-relation 4068. Up to 471 conditions per place. [2023-08-26 09:01:51,047 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 106 selfloop transitions, 46 changer transitions 6/172 dead transitions. [2023-08-26 09:01:51,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 172 transitions, 1879 flow [2023-08-26 09:01:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:01:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:01:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2972 transitions. [2023-08-26 09:01:51,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3895150720838794 [2023-08-26 09:01:51,052 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2972 transitions. [2023-08-26 09:01:51,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2972 transitions. [2023-08-26 09:01:51,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:51,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2972 transitions. [2023-08-26 09:01:51,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 297.2) internal successors, (2972), 10 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:51,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 763.0) internal successors, (8393), 11 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:51,063 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 763.0) internal successors, (8393), 11 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:51,063 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 1380 flow. Second operand 10 states and 2972 transitions. [2023-08-26 09:01:51,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 172 transitions, 1879 flow [2023-08-26 09:01:51,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 172 transitions, 1809 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-26 09:01:51,082 INFO L231 Difference]: Finished difference. Result has 118 places, 132 transitions, 1442 flow [2023-08-26 09:01:51,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1442, PETRI_PLACES=118, PETRI_TRANSITIONS=132} [2023-08-26 09:01:51,083 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2023-08-26 09:01:51,083 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 132 transitions, 1442 flow [2023-08-26 09:01:51,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 292.6666666666667) internal successors, (4390), 15 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:51,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:51,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:51,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:51,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:51,289 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:51,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:51,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1360987687, now seen corresponding path program 6 times [2023-08-26 09:01:51,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:51,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811009929] [2023-08-26 09:01:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:51,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:51,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:51,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811009929] [2023-08-26 09:01:51,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811009929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:51,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060695383] [2023-08-26 09:01:51,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:01:51,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:51,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:51,589 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) [2023-08-26 09:01:51,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 09:01:51,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:01:51,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:51,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:51,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:51,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:52,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060695383] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:52,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:52,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 09:01:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258649556] [2023-08-26 09:01:52,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:52,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 09:01:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 09:01:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-08-26 09:01:52,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:52,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 132 transitions, 1442 flow. Second operand has 14 states, 14 states have (on average 292.7857142857143) internal successors, (4099), 14 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:52,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:52,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:52,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:52,442 INFO L124 PetriNetUnfolderBase]: 450/880 cut-off events. [2023-08-26 09:01:52,442 INFO L125 PetriNetUnfolderBase]: For 5150/5164 co-relation queries the response was YES. [2023-08-26 09:01:52,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4197 conditions, 880 events. 450/880 cut-off events. For 5150/5164 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4806 event pairs, 52 based on Foata normal form. 6/854 useless extension candidates. Maximal degree in co-relation 4161. Up to 484 conditions per place. [2023-08-26 09:01:52,451 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 105 selfloop transitions, 46 changer transitions 7/172 dead transitions. [2023-08-26 09:01:52,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 172 transitions, 1977 flow [2023-08-26 09:01:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:01:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:01:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3253 transitions. [2023-08-26 09:01:52,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875848921720481 [2023-08-26 09:01:52,457 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3253 transitions. [2023-08-26 09:01:52,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3253 transitions. [2023-08-26 09:01:52,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:52,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3253 transitions. [2023-08-26 09:01:52,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 295.72727272727275) internal successors, (3253), 11 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:52,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:52,468 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:52,468 INFO L175 Difference]: Start difference. First operand has 118 places, 132 transitions, 1442 flow. Second operand 11 states and 3253 transitions. [2023-08-26 09:01:52,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 172 transitions, 1977 flow [2023-08-26 09:01:52,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 172 transitions, 1877 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-26 09:01:52,489 INFO L231 Difference]: Finished difference. Result has 125 places, 139 transitions, 1581 flow [2023-08-26 09:01:52,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1581, PETRI_PLACES=125, PETRI_TRANSITIONS=139} [2023-08-26 09:01:52,489 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2023-08-26 09:01:52,489 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 139 transitions, 1581 flow [2023-08-26 09:01:52,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 292.7857142857143) internal successors, (4099), 14 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:52,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:52,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:52,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:52,696 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,SelfDestructingSolverStorable21 [2023-08-26 09:01:52,696 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:52,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash 489597615, now seen corresponding path program 7 times [2023-08-26 09:01:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487121912] [2023-08-26 09:01:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:53,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:53,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487121912] [2023-08-26 09:01:53,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487121912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:53,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962822882] [2023-08-26 09:01:53,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:01:53,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:53,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:53,089 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) [2023-08-26 09:01:53,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 09:01:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:53,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:53,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:53,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:53,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962822882] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:53,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:53,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-26 09:01:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769533385] [2023-08-26 09:01:53,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:53,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:01:53,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:53,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:01:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:01:53,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:53,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 139 transitions, 1581 flow. Second operand has 17 states, 17 states have (on average 292.4117647058824) internal successors, (4971), 17 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:53,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:53,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:53,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:53,906 INFO L124 PetriNetUnfolderBase]: 579/1129 cut-off events. [2023-08-26 09:01:53,906 INFO L125 PetriNetUnfolderBase]: For 6878/6890 co-relation queries the response was YES. [2023-08-26 09:01:53,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5343 conditions, 1129 events. 579/1129 cut-off events. For 6878/6890 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6662 event pairs, 77 based on Foata normal form. 5/1094 useless extension candidates. Maximal degree in co-relation 5303. Up to 696 conditions per place. [2023-08-26 09:01:53,918 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 138 selfloop transitions, 43 changer transitions 6/201 dead transitions. [2023-08-26 09:01:53,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 201 transitions, 2354 flow [2023-08-26 09:01:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:01:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:01:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3257 transitions. [2023-08-26 09:01:53,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880614798045991 [2023-08-26 09:01:53,923 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3257 transitions. [2023-08-26 09:01:53,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3257 transitions. [2023-08-26 09:01:53,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:53,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3257 transitions. [2023-08-26 09:01:53,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 296.09090909090907) internal successors, (3257), 11 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:53,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:53,934 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:53,934 INFO L175 Difference]: Start difference. First operand has 125 places, 139 transitions, 1581 flow. Second operand 11 states and 3257 transitions. [2023-08-26 09:01:53,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 201 transitions, 2354 flow [2023-08-26 09:01:53,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 2288 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-26 09:01:53,960 INFO L231 Difference]: Finished difference. Result has 135 places, 163 transitions, 1929 flow [2023-08-26 09:01:53,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1929, PETRI_PLACES=135, PETRI_TRANSITIONS=163} [2023-08-26 09:01:53,961 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2023-08-26 09:01:53,961 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 163 transitions, 1929 flow [2023-08-26 09:01:53,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 292.4117647058824) internal successors, (4971), 17 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:53,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:53,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:53,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-26 09:01:54,170 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,SelfDestructingSolverStorable22 [2023-08-26 09:01:54,170 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:54,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1548088257, now seen corresponding path program 8 times [2023-08-26 09:01:54,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:54,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823672252] [2023-08-26 09:01:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:54,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:54,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823672252] [2023-08-26 09:01:54,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823672252] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:54,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145648967] [2023-08-26 09:01:54,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:01:54,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:54,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:54,404 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) [2023-08-26 09:01:54,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 09:01:54,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:01:54,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:54,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:54,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:54,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:54,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145648967] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:54,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:54,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-26 09:01:54,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751974630] [2023-08-26 09:01:54,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:54,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:01:54,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:54,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:01:54,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:01:54,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:54,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 163 transitions, 1929 flow. Second operand has 13 states, 13 states have (on average 292.7692307692308) internal successors, (3806), 13 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:54,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:54,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:54,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:55,339 INFO L124 PetriNetUnfolderBase]: 585/1149 cut-off events. [2023-08-26 09:01:55,340 INFO L125 PetriNetUnfolderBase]: For 8284/8296 co-relation queries the response was YES. [2023-08-26 09:01:55,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5824 conditions, 1149 events. 585/1149 cut-off events. For 8284/8296 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6881 event pairs, 77 based on Foata normal form. 5/1114 useless extension candidates. Maximal degree in co-relation 5779. Up to 714 conditions per place. [2023-08-26 09:01:55,352 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 142 selfloop transitions, 44 changer transitions 7/207 dead transitions. [2023-08-26 09:01:55,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 207 transitions, 2574 flow [2023-08-26 09:01:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:01:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:01:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3547 transitions. [2023-08-26 09:01:55,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3873962429008301 [2023-08-26 09:01:55,357 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3547 transitions. [2023-08-26 09:01:55,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3547 transitions. [2023-08-26 09:01:55,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:55,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3547 transitions. [2023-08-26 09:01:55,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 295.5833333333333) internal successors, (3547), 12 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:55,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:55,368 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:55,368 INFO L175 Difference]: Start difference. First operand has 135 places, 163 transitions, 1929 flow. Second operand 12 states and 3547 transitions. [2023-08-26 09:01:55,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 207 transitions, 2574 flow [2023-08-26 09:01:55,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 207 transitions, 2478 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-08-26 09:01:55,405 INFO L231 Difference]: Finished difference. Result has 147 places, 169 transitions, 2045 flow [2023-08-26 09:01:55,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2045, PETRI_PLACES=147, PETRI_TRANSITIONS=169} [2023-08-26 09:01:55,406 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 89 predicate places. [2023-08-26 09:01:55,406 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 169 transitions, 2045 flow [2023-08-26 09:01:55,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 292.7692307692308) internal successors, (3806), 13 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:55,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:55,407 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:55,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-26 09:01:55,612 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,SelfDestructingSolverStorable23 [2023-08-26 09:01:55,612 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:55,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 514105153, now seen corresponding path program 9 times [2023-08-26 09:01:55,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:55,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331773481] [2023-08-26 09:01:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:55,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:55,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:55,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331773481] [2023-08-26 09:01:55,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331773481] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:55,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904788823] [2023-08-26 09:01:55,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:01:55,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:55,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:55,877 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) [2023-08-26 09:01:55,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 09:01:56,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:01:56,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:56,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:56,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:56,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:56,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:56,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904788823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:56,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:56,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-26 09:01:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256303728] [2023-08-26 09:01:56,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:56,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:01:56,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:56,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:01:56,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:01:56,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:56,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 169 transitions, 2045 flow. Second operand has 16 states, 16 states have (on average 292.4375) internal successors, (4679), 16 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:56,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:56,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:56,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:56,681 INFO L124 PetriNetUnfolderBase]: 584/1142 cut-off events. [2023-08-26 09:01:56,681 INFO L125 PetriNetUnfolderBase]: For 8590/8602 co-relation queries the response was YES. [2023-08-26 09:01:56,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 1142 events. 584/1142 cut-off events. For 8590/8602 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6791 event pairs, 83 based on Foata normal form. 5/1107 useless extension candidates. Maximal degree in co-relation 5842. Up to 698 conditions per place. [2023-08-26 09:01:56,691 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 134 selfloop transitions, 47 changer transitions 6/201 dead transitions. [2023-08-26 09:01:56,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 201 transitions, 2575 flow [2023-08-26 09:01:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:01:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:01:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2670 transitions. [2023-08-26 09:01:56,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888160768894714 [2023-08-26 09:01:56,695 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2670 transitions. [2023-08-26 09:01:56,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2670 transitions. [2023-08-26 09:01:56,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:56,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2670 transitions. [2023-08-26 09:01:56,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 296.6666666666667) internal successors, (2670), 9 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:56,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:56,703 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:56,703 INFO L175 Difference]: Start difference. First operand has 147 places, 169 transitions, 2045 flow. Second operand 9 states and 2670 transitions. [2023-08-26 09:01:56,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 201 transitions, 2575 flow [2023-08-26 09:01:56,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 201 transitions, 2490 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-26 09:01:56,742 INFO L231 Difference]: Finished difference. Result has 151 places, 171 transitions, 2100 flow [2023-08-26 09:01:56,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2100, PETRI_PLACES=151, PETRI_TRANSITIONS=171} [2023-08-26 09:01:56,742 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 93 predicate places. [2023-08-26 09:01:56,742 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 171 transitions, 2100 flow [2023-08-26 09:01:56,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 292.4375) internal successors, (4679), 16 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:56,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:56,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:56,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:56,949 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,SelfDestructingSolverStorable24 [2023-08-26 09:01:56,950 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:56,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1416930561, now seen corresponding path program 10 times [2023-08-26 09:01:56,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:56,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608045165] [2023-08-26 09:01:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:56,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:57,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:57,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608045165] [2023-08-26 09:01:57,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608045165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65553963] [2023-08-26 09:01:57,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:01:57,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:57,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:57,197 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) [2023-08-26 09:01:57,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 09:01:57,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:01:57,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:57,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 09:01:57,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:57,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:57,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65553963] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:57,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:57,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-08-26 09:01:57,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532212507] [2023-08-26 09:01:57,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:57,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:01:57,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:57,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:01:57,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:01:57,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:01:57,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 171 transitions, 2100 flow. Second operand has 12 states, 12 states have (on average 292.9166666666667) internal successors, (3515), 12 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:57,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:57,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:01:57,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:57,959 INFO L124 PetriNetUnfolderBase]: 581/1133 cut-off events. [2023-08-26 09:01:57,960 INFO L125 PetriNetUnfolderBase]: For 9089/9101 co-relation queries the response was YES. [2023-08-26 09:01:57,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5898 conditions, 1133 events. 581/1133 cut-off events. For 9089/9101 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6780 event pairs, 79 based on Foata normal form. 5/1098 useless extension candidates. Maximal degree in co-relation 5847. Up to 772 conditions per place. [2023-08-26 09:01:57,969 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 139 selfloop transitions, 41 changer transitions 6/200 dead transitions. [2023-08-26 09:01:57,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 200 transitions, 2704 flow [2023-08-26 09:01:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:01:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:01:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2947 transitions. [2023-08-26 09:01:57,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38623853211009174 [2023-08-26 09:01:57,973 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2947 transitions. [2023-08-26 09:01:57,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2947 transitions. [2023-08-26 09:01:57,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:57,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2947 transitions. [2023-08-26 09:01:57,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 294.7) internal successors, (2947), 10 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:57,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 763.0) internal successors, (8393), 11 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:57,981 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 763.0) internal successors, (8393), 11 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:57,981 INFO L175 Difference]: Start difference. First operand has 151 places, 171 transitions, 2100 flow. Second operand 10 states and 2947 transitions. [2023-08-26 09:01:57,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 200 transitions, 2704 flow [2023-08-26 09:01:58,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 200 transitions, 2574 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-26 09:01:58,021 INFO L231 Difference]: Finished difference. Result has 157 places, 180 transitions, 2263 flow [2023-08-26 09:01:58,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2263, PETRI_PLACES=157, PETRI_TRANSITIONS=180} [2023-08-26 09:01:58,021 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 99 predicate places. [2023-08-26 09:01:58,022 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 180 transitions, 2263 flow [2023-08-26 09:01:58,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 292.9166666666667) internal successors, (3515), 12 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:58,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:58,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:58,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:58,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:58,227 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:58,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:58,228 INFO L85 PathProgramCache]: Analyzing trace with hash -203994843, now seen corresponding path program 11 times [2023-08-26 09:01:58,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508246252] [2023-08-26 09:01:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508246252] [2023-08-26 09:01:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508246252] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:58,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304997737] [2023-08-26 09:01:58,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:01:58,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:58,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:58,301 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) [2023-08-26 09:01:58,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 09:01:58,434 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:01:58,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:58,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:01:58,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:58,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:58,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304997737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:58,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:58,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:01:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618143800] [2023-08-26 09:01:58,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:01:58,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:58,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:01:58,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:01:58,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:58,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 180 transitions, 2263 flow. Second operand has 12 states, 12 states have (on average 306.5833333333333) internal successors, (3679), 12 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:58,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:58,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:58,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:58,879 INFO L124 PetriNetUnfolderBase]: 803/1497 cut-off events. [2023-08-26 09:01:58,879 INFO L125 PetriNetUnfolderBase]: For 10727/10727 co-relation queries the response was YES. [2023-08-26 09:01:58,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7570 conditions, 1497 events. 803/1497 cut-off events. For 10727/10727 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8968 event pairs, 146 based on Foata normal form. 30/1485 useless extension candidates. Maximal degree in co-relation 7515. Up to 574 conditions per place. [2023-08-26 09:01:58,894 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 172 selfloop transitions, 86 changer transitions 5/267 dead transitions. [2023-08-26 09:01:58,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 267 transitions, 3486 flow [2023-08-26 09:01:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:01:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:01:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3730 transitions. [2023-08-26 09:01:58,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073831367409349 [2023-08-26 09:01:58,899 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3730 transitions. [2023-08-26 09:01:58,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3730 transitions. [2023-08-26 09:01:58,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:58,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3730 transitions. [2023-08-26 09:01:58,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 310.8333333333333) internal successors, (3730), 12 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:58,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:58,909 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:58,909 INFO L175 Difference]: Start difference. First operand has 157 places, 180 transitions, 2263 flow. Second operand 12 states and 3730 transitions. [2023-08-26 09:01:58,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 267 transitions, 3486 flow [2023-08-26 09:01:58,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 267 transitions, 3401 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-26 09:01:58,957 INFO L231 Difference]: Finished difference. Result has 170 places, 209 transitions, 2735 flow [2023-08-26 09:01:58,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2735, PETRI_PLACES=170, PETRI_TRANSITIONS=209} [2023-08-26 09:01:58,958 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 112 predicate places. [2023-08-26 09:01:58,958 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 209 transitions, 2735 flow [2023-08-26 09:01:58,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 306.5833333333333) internal successors, (3679), 12 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:58,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:01:58,959 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:01:58,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 09:01:59,164 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,SelfDestructingSolverStorable26 [2023-08-26 09:01:59,165 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:01:59,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:01:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1030705511, now seen corresponding path program 12 times [2023-08-26 09:01:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:01:59,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127154917] [2023-08-26 09:01:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:01:59,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:01:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:01:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:59,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:01:59,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127154917] [2023-08-26 09:01:59,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127154917] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:01:59,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799031328] [2023-08-26 09:01:59,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:01:59,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:01:59,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:01:59,241 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) [2023-08-26 09:01:59,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 09:01:59,402 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 09:01:59,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:01:59,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:01:59,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:01:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:59,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:01:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:01:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799031328] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:01:59,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:01:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:01:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603589769] [2023-08-26 09:01:59,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:01:59,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:01:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:01:59,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:01:59,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:01:59,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:01:59,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 209 transitions, 2735 flow. Second operand has 12 states, 12 states have (on average 306.4166666666667) internal successors, (3677), 12 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:01:59,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:01:59,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:01:59,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:01:59,974 INFO L124 PetriNetUnfolderBase]: 805/1507 cut-off events. [2023-08-26 09:01:59,974 INFO L125 PetriNetUnfolderBase]: For 13217/13223 co-relation queries the response was YES. [2023-08-26 09:01:59,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8319 conditions, 1507 events. 805/1507 cut-off events. For 13217/13223 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9041 event pairs, 143 based on Foata normal form. 22/1487 useless extension candidates. Maximal degree in co-relation 8259. Up to 549 conditions per place. [2023-08-26 09:01:59,990 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 141 selfloop transitions, 146 changer transitions 4/295 dead transitions. [2023-08-26 09:01:59,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 295 transitions, 4075 flow [2023-08-26 09:01:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:01:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:01:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6817 transitions. [2023-08-26 09:01:59,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40611223638746574 [2023-08-26 09:01:59,997 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6817 transitions. [2023-08-26 09:01:59,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6817 transitions. [2023-08-26 09:01:59,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:01:59,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6817 transitions. [2023-08-26 09:02:00,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 309.8636363636364) internal successors, (6817), 22 states have internal predecessors, (6817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:00,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 763.0) internal successors, (17549), 23 states have internal predecessors, (17549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:00,015 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 763.0) internal successors, (17549), 23 states have internal predecessors, (17549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:00,016 INFO L175 Difference]: Start difference. First operand has 170 places, 209 transitions, 2735 flow. Second operand 22 states and 6817 transitions. [2023-08-26 09:02:00,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 295 transitions, 4075 flow [2023-08-26 09:02:00,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 295 transitions, 4005 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-26 09:02:00,080 INFO L231 Difference]: Finished difference. Result has 196 places, 236 transitions, 3404 flow [2023-08-26 09:02:00,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3404, PETRI_PLACES=196, PETRI_TRANSITIONS=236} [2023-08-26 09:02:00,080 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 138 predicate places. [2023-08-26 09:02:00,080 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 236 transitions, 3404 flow [2023-08-26 09:02:00,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 306.4166666666667) internal successors, (3677), 12 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:00,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:00,081 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:00,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:00,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-26 09:02:00,287 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:00,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1978786667, now seen corresponding path program 13 times [2023-08-26 09:02:00,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:00,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550782224] [2023-08-26 09:02:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:00,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:00,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:00,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550782224] [2023-08-26 09:02:00,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550782224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:00,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126995695] [2023-08-26 09:02:00,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:02:00,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:00,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:00,355 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) [2023-08-26 09:02:00,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 09:02:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:00,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:00,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:00,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:00,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126995695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:00,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:00,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-26 09:02:00,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103671035] [2023-08-26 09:02:00,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:00,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:02:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:00,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:02:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:02:00,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:00,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 236 transitions, 3404 flow. Second operand has 11 states, 11 states have (on average 306.45454545454544) internal successors, (3371), 11 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:00,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:00,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:00,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:00,901 INFO L124 PetriNetUnfolderBase]: 834/1607 cut-off events. [2023-08-26 09:02:00,901 INFO L125 PetriNetUnfolderBase]: For 17624/17624 co-relation queries the response was YES. [2023-08-26 09:02:00,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 1607 events. 834/1607 cut-off events. For 17624/17624 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9859 event pairs, 137 based on Foata normal form. 10/1567 useless extension candidates. Maximal degree in co-relation 9471. Up to 444 conditions per place. [2023-08-26 09:02:00,919 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 200 selfloop transitions, 59 changer transitions 17/280 dead transitions. [2023-08-26 09:02:00,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 280 transitions, 4344 flow [2023-08-26 09:02:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:02:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:02:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2188 transitions. [2023-08-26 09:02:00,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40966111215128254 [2023-08-26 09:02:00,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2188 transitions. [2023-08-26 09:02:00,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2188 transitions. [2023-08-26 09:02:00,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:00,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2188 transitions. [2023-08-26 09:02:00,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 312.57142857142856) internal successors, (2188), 7 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:00,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:00,928 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:00,928 INFO L175 Difference]: Start difference. First operand has 196 places, 236 transitions, 3404 flow. Second operand 7 states and 2188 transitions. [2023-08-26 09:02:00,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 280 transitions, 4344 flow [2023-08-26 09:02:01,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 280 transitions, 4199 flow, removed 35 selfloop flow, removed 7 redundant places. [2023-08-26 09:02:01,008 INFO L231 Difference]: Finished difference. Result has 198 places, 236 transitions, 3396 flow [2023-08-26 09:02:01,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3396, PETRI_PLACES=198, PETRI_TRANSITIONS=236} [2023-08-26 09:02:01,010 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 140 predicate places. [2023-08-26 09:02:01,011 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 236 transitions, 3396 flow [2023-08-26 09:02:01,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 306.45454545454544) internal successors, (3371), 11 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:01,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:01,011 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:01,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:01,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 09:02:01,217 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:01,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2110486909, now seen corresponding path program 14 times [2023-08-26 09:02:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760889080] [2023-08-26 09:02:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:01,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:01,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:01,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760889080] [2023-08-26 09:02:01,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760889080] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536376347] [2023-08-26 09:02:01,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:02:01,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:01,297 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) [2023-08-26 09:02:01,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 09:02:01,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:02:01,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:01,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:01,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:01,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:01,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536376347] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:01,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:01,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-26 09:02:01,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046788503] [2023-08-26 09:02:01,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:01,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:01,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:01,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:01,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:01,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:01,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 236 transitions, 3396 flow. Second operand has 13 states, 13 states have (on average 306.6923076923077) internal successors, (3987), 13 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:01,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:01,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:01,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:01,971 INFO L124 PetriNetUnfolderBase]: 822/1574 cut-off events. [2023-08-26 09:02:01,972 INFO L125 PetriNetUnfolderBase]: For 18154/18154 co-relation queries the response was YES. [2023-08-26 09:02:01,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9459 conditions, 1574 events. 822/1574 cut-off events. For 18154/18154 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9639 event pairs, 171 based on Foata normal form. 10/1534 useless extension candidates. Maximal degree in co-relation 9388. Up to 654 conditions per place. [2023-08-26 09:02:02,056 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 180 selfloop transitions, 79 changer transitions 15/278 dead transitions. [2023-08-26 09:02:02,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 278 transitions, 4288 flow [2023-08-26 09:02:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:02:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:02:02,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3417 transitions. [2023-08-26 09:02:02,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40712498510663647 [2023-08-26 09:02:02,060 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3417 transitions. [2023-08-26 09:02:02,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3417 transitions. [2023-08-26 09:02:02,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:02,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3417 transitions. [2023-08-26 09:02:02,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.6363636363636) internal successors, (3417), 11 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:02,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:02,069 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:02,069 INFO L175 Difference]: Start difference. First operand has 198 places, 236 transitions, 3396 flow. Second operand 11 states and 3417 transitions. [2023-08-26 09:02:02,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 278 transitions, 4288 flow [2023-08-26 09:02:02,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 278 transitions, 4159 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-26 09:02:02,147 INFO L231 Difference]: Finished difference. Result has 202 places, 231 transitions, 3342 flow [2023-08-26 09:02:02,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3342, PETRI_PLACES=202, PETRI_TRANSITIONS=231} [2023-08-26 09:02:02,148 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 144 predicate places. [2023-08-26 09:02:02,148 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 231 transitions, 3342 flow [2023-08-26 09:02:02,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.6923076923077) internal successors, (3987), 13 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:02,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:02,149 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:02,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:02,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:02,355 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:02,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1150344055, now seen corresponding path program 15 times [2023-08-26 09:02:02,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:02,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028170157] [2023-08-26 09:02:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:02,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:02,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:02,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028170157] [2023-08-26 09:02:02,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028170157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:02,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141598360] [2023-08-26 09:02:02,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:02:02,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:02,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:02,465 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) [2023-08-26 09:02:02,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 09:02:02,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:02:02,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:02,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:02,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:02,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141598360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:02,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:02,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-26 09:02:02,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596515708] [2023-08-26 09:02:02,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:02:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:02,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:02:02,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:02:02,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:02,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 231 transitions, 3342 flow. Second operand has 15 states, 15 states have (on average 306.06666666666666) internal successors, (4591), 15 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:02,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:02,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:02,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:03,483 INFO L124 PetriNetUnfolderBase]: 1040/1985 cut-off events. [2023-08-26 09:02:03,483 INFO L125 PetriNetUnfolderBase]: For 24587/24593 co-relation queries the response was YES. [2023-08-26 09:02:03,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12075 conditions, 1985 events. 1040/1985 cut-off events. For 24587/24593 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12309 event pairs, 187 based on Foata normal form. 46/1984 useless extension candidates. Maximal degree in co-relation 12005. Up to 479 conditions per place. [2023-08-26 09:02:03,509 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 131 selfloop transitions, 219 changer transitions 4/358 dead transitions. [2023-08-26 09:02:03,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 358 transitions, 5423 flow [2023-08-26 09:02:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 09:02:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 09:02:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 8355 transitions. [2023-08-26 09:02:03,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055628367554973 [2023-08-26 09:02:03,523 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 8355 transitions. [2023-08-26 09:02:03,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 8355 transitions. [2023-08-26 09:02:03,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:03,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 8355 transitions. [2023-08-26 09:02:03,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 309.44444444444446) internal successors, (8355), 27 states have internal predecessors, (8355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:03,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 763.0) internal successors, (21364), 28 states have internal predecessors, (21364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:03,550 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 763.0) internal successors, (21364), 28 states have internal predecessors, (21364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:03,550 INFO L175 Difference]: Start difference. First operand has 202 places, 231 transitions, 3342 flow. Second operand 27 states and 8355 transitions. [2023-08-26 09:02:03,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 358 transitions, 5423 flow [2023-08-26 09:02:03,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 358 transitions, 5219 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-08-26 09:02:03,652 INFO L231 Difference]: Finished difference. Result has 233 places, 300 transitions, 4888 flow [2023-08-26 09:02:03,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4888, PETRI_PLACES=233, PETRI_TRANSITIONS=300} [2023-08-26 09:02:03,653 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 175 predicate places. [2023-08-26 09:02:03,653 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 300 transitions, 4888 flow [2023-08-26 09:02:03,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 306.06666666666666) internal successors, (4591), 15 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:03,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:03,653 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:03,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:03,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:03,862 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:03,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash -477771567, now seen corresponding path program 16 times [2023-08-26 09:02:03,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:03,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847957095] [2023-08-26 09:02:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:03,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847957095] [2023-08-26 09:02:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847957095] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302529574] [2023-08-26 09:02:03,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:02:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:03,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:03,939 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) [2023-08-26 09:02:03,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 09:02:04,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:02:04,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:04,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:04,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:04,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:02:04,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302529574] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:04,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:04,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:02:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965728791] [2023-08-26 09:02:04,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:04,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:04,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:04,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 300 transitions, 4888 flow. Second operand has 13 states, 13 states have (on average 306.3076923076923) internal successors, (3982), 13 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:04,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:04,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:04,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:04,719 INFO L124 PetriNetUnfolderBase]: 1052/2009 cut-off events. [2023-08-26 09:02:04,719 INFO L125 PetriNetUnfolderBase]: For 34672/34672 co-relation queries the response was YES. [2023-08-26 09:02:04,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13707 conditions, 2009 events. 1052/2009 cut-off events. For 34672/34672 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12670 event pairs, 292 based on Foata normal form. 24/1990 useless extension candidates. Maximal degree in co-relation 13625. Up to 900 conditions per place. [2023-08-26 09:02:04,744 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 211 selfloop transitions, 119 changer transitions 7/341 dead transitions. [2023-08-26 09:02:04,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 341 transitions, 5927 flow [2023-08-26 09:02:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:02:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:02:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4346 transitions. [2023-08-26 09:02:04,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40685264931660736 [2023-08-26 09:02:04,749 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4346 transitions. [2023-08-26 09:02:04,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4346 transitions. [2023-08-26 09:02:04,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:04,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4346 transitions. [2023-08-26 09:02:04,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 310.42857142857144) internal successors, (4346), 14 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:04,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:04,760 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:04,760 INFO L175 Difference]: Start difference. First operand has 233 places, 300 transitions, 4888 flow. Second operand 14 states and 4346 transitions. [2023-08-26 09:02:04,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 341 transitions, 5927 flow [2023-08-26 09:02:04,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 341 transitions, 5365 flow, removed 228 selfloop flow, removed 5 redundant places. [2023-08-26 09:02:04,932 INFO L231 Difference]: Finished difference. Result has 243 places, 304 transitions, 4684 flow [2023-08-26 09:02:04,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=4376, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4684, PETRI_PLACES=243, PETRI_TRANSITIONS=304} [2023-08-26 09:02:04,934 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 185 predicate places. [2023-08-26 09:02:04,934 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 304 transitions, 4684 flow [2023-08-26 09:02:04,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.3076923076923) internal successors, (3982), 13 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:04,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:04,935 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:04,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:05,140 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,SelfDestructingSolverStorable31 [2023-08-26 09:02:05,140 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:05,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash 101168531, now seen corresponding path program 17 times [2023-08-26 09:02:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:05,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386218712] [2023-08-26 09:02:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:05,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:05,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:05,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:05,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386218712] [2023-08-26 09:02:05,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386218712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:05,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637883656] [2023-08-26 09:02:05,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:02:05,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:05,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:05,213 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) [2023-08-26 09:02:05,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 09:02:05,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:02:05,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:05,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:05,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:05,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:05,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637883656] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:05,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:05,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:02:05,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108987944] [2023-08-26 09:02:05,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:05,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:05,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:05,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:05,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 304 transitions, 4684 flow. Second operand has 13 states, 13 states have (on average 306.46153846153845) internal successors, (3984), 13 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:05,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:05,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:05,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:06,106 INFO L124 PetriNetUnfolderBase]: 1143/2161 cut-off events. [2023-08-26 09:02:06,106 INFO L125 PetriNetUnfolderBase]: For 34140/34146 co-relation queries the response was YES. [2023-08-26 09:02:06,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14295 conditions, 2161 events. 1143/2161 cut-off events. For 34140/34146 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13583 event pairs, 212 based on Foata normal form. 18/2127 useless extension candidates. Maximal degree in co-relation 14211. Up to 544 conditions per place. [2023-08-26 09:02:06,133 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 121 selfloop transitions, 264 changer transitions 3/392 dead transitions. [2023-08-26 09:02:06,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 392 transitions, 6483 flow [2023-08-26 09:02:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 09:02:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 09:02:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 7729 transitions. [2023-08-26 09:02:06,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051900393184797 [2023-08-26 09:02:06,140 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 7729 transitions. [2023-08-26 09:02:06,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 7729 transitions. [2023-08-26 09:02:06,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:06,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 7729 transitions. [2023-08-26 09:02:06,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 309.16) internal successors, (7729), 25 states have internal predecessors, (7729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:06,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 763.0) internal successors, (19838), 26 states have internal predecessors, (19838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:06,160 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 763.0) internal successors, (19838), 26 states have internal predecessors, (19838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:06,160 INFO L175 Difference]: Start difference. First operand has 243 places, 304 transitions, 4684 flow. Second operand 25 states and 7729 transitions. [2023-08-26 09:02:06,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 392 transitions, 6483 flow [2023-08-26 09:02:06,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 392 transitions, 6259 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-26 09:02:06,305 INFO L231 Difference]: Finished difference. Result has 265 places, 348 transitions, 6090 flow [2023-08-26 09:02:06,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=4472, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6090, PETRI_PLACES=265, PETRI_TRANSITIONS=348} [2023-08-26 09:02:06,306 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 207 predicate places. [2023-08-26 09:02:06,306 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 348 transitions, 6090 flow [2023-08-26 09:02:06,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.46153846153845) internal successors, (3984), 13 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:06,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:06,306 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:06,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:06,507 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,SelfDestructingSolverStorable32 [2023-08-26 09:02:06,507 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:06,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:06,507 INFO L85 PathProgramCache]: Analyzing trace with hash 113189101, now seen corresponding path program 18 times [2023-08-26 09:02:06,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:06,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500555219] [2023-08-26 09:02:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:06,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:06,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:06,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500555219] [2023-08-26 09:02:06,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500555219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:06,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482464809] [2023-08-26 09:02:06,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:02:06,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:06,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:06,583 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) [2023-08-26 09:02:06,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-26 09:02:06,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:02:06,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:06,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:06,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:06,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:02:06,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482464809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:06,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:06,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:02:06,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312149479] [2023-08-26 09:02:06,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:06,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:06,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:06,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:06,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 348 transitions, 6090 flow. Second operand has 13 states, 13 states have (on average 306.3076923076923) internal successors, (3982), 13 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:06,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:06,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:06,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:07,400 INFO L124 PetriNetUnfolderBase]: 1161/2204 cut-off events. [2023-08-26 09:02:07,400 INFO L125 PetriNetUnfolderBase]: For 41948/41954 co-relation queries the response was YES. [2023-08-26 09:02:07,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15519 conditions, 2204 events. 1161/2204 cut-off events. For 41948/41954 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14019 event pairs, 319 based on Foata normal form. 18/2175 useless extension candidates. Maximal degree in co-relation 15429. Up to 985 conditions per place. [2023-08-26 09:02:07,422 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 231 selfloop transitions, 144 changer transitions 5/384 dead transitions. [2023-08-26 09:02:07,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 384 transitions, 7094 flow [2023-08-26 09:02:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:02:07,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:02:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4348 transitions. [2023-08-26 09:02:07,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4070398801722524 [2023-08-26 09:02:07,427 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4348 transitions. [2023-08-26 09:02:07,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4348 transitions. [2023-08-26 09:02:07,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:07,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4348 transitions. [2023-08-26 09:02:07,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 310.57142857142856) internal successors, (4348), 14 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:07,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:07,438 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:07,438 INFO L175 Difference]: Start difference. First operand has 265 places, 348 transitions, 6090 flow. Second operand 14 states and 4348 transitions. [2023-08-26 09:02:07,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 384 transitions, 7094 flow [2023-08-26 09:02:07,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 384 transitions, 6609 flow, removed 163 selfloop flow, removed 14 redundant places. [2023-08-26 09:02:07,633 INFO L231 Difference]: Finished difference. Result has 266 places, 350 transitions, 5939 flow [2023-08-26 09:02:07,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=5605, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5939, PETRI_PLACES=266, PETRI_TRANSITIONS=350} [2023-08-26 09:02:07,634 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 208 predicate places. [2023-08-26 09:02:07,634 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 350 transitions, 5939 flow [2023-08-26 09:02:07,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.3076923076923) internal successors, (3982), 13 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:07,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:07,635 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:07,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-26 09:02:07,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:07,841 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:07,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -230290673, now seen corresponding path program 19 times [2023-08-26 09:02:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:07,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602982621] [2023-08-26 09:02:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:07,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602982621] [2023-08-26 09:02:07,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602982621] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146331286] [2023-08-26 09:02:07,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:02:07,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:07,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:07,923 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) [2023-08-26 09:02:07,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-26 09:02:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:08,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:08,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:08,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146331286] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:08,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:08,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-26 09:02:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125994616] [2023-08-26 09:02:08,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:08,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:02:08,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:02:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:02:08,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:08,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 350 transitions, 5939 flow. Second operand has 15 states, 15 states have (on average 306.2) internal successors, (4593), 15 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:08,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:08,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:08,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:08,823 INFO L124 PetriNetUnfolderBase]: 1226/2325 cut-off events. [2023-08-26 09:02:08,823 INFO L125 PetriNetUnfolderBase]: For 41385/41391 co-relation queries the response was YES. [2023-08-26 09:02:08,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15986 conditions, 2325 events. 1226/2325 cut-off events. For 41385/41391 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14939 event pairs, 327 based on Foata normal form. 22/2298 useless extension candidates. Maximal degree in co-relation 15899. Up to 1025 conditions per place. [2023-08-26 09:02:08,845 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 246 selfloop transitions, 158 changer transitions 13/421 dead transitions. [2023-08-26 09:02:08,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 421 transitions, 7395 flow [2023-08-26 09:02:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:02:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:02:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5277 transitions. [2023-08-26 09:02:08,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40683062215711974 [2023-08-26 09:02:08,853 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5277 transitions. [2023-08-26 09:02:08,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5277 transitions. [2023-08-26 09:02:08,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:08,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5277 transitions. [2023-08-26 09:02:08,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 310.4117647058824) internal successors, (5277), 17 states have internal predecessors, (5277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:08,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:08,865 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:08,865 INFO L175 Difference]: Start difference. First operand has 266 places, 350 transitions, 5939 flow. Second operand 17 states and 5277 transitions. [2023-08-26 09:02:08,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 421 transitions, 7395 flow [2023-08-26 09:02:09,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 421 transitions, 7035 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-08-26 09:02:09,036 INFO L231 Difference]: Finished difference. Result has 272 places, 362 transitions, 6145 flow [2023-08-26 09:02:09,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=5558, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6145, PETRI_PLACES=272, PETRI_TRANSITIONS=362} [2023-08-26 09:02:09,036 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 214 predicate places. [2023-08-26 09:02:09,036 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 362 transitions, 6145 flow [2023-08-26 09:02:09,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 306.2) internal successors, (4593), 15 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:09,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:09,037 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:09,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:09,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:09,238 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:09,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:09,238 INFO L85 PathProgramCache]: Analyzing trace with hash -871372235, now seen corresponding path program 20 times [2023-08-26 09:02:09,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:09,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211029051] [2023-08-26 09:02:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:09,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:09,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:09,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211029051] [2023-08-26 09:02:09,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211029051] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:09,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256162629] [2023-08-26 09:02:09,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:02:09,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:09,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:09,307 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) [2023-08-26 09:02:09,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-26 09:02:09,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:02:09,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:09,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:09,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:09,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:09,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256162629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:09,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:09,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-26 09:02:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505328126] [2023-08-26 09:02:09,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:09,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:02:09,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:02:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:02:09,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:09,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 362 transitions, 6145 flow. Second operand has 11 states, 11 states have (on average 307.09090909090907) internal successors, (3378), 11 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:09,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:09,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:09,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:10,252 INFO L124 PetriNetUnfolderBase]: 1538/2875 cut-off events. [2023-08-26 09:02:10,252 INFO L125 PetriNetUnfolderBase]: For 49588/49600 co-relation queries the response was YES. [2023-08-26 09:02:10,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19733 conditions, 2875 events. 1538/2875 cut-off events. For 49588/49600 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 18694 event pairs, 221 based on Foata normal form. 16/2826 useless extension candidates. Maximal degree in co-relation 19645. Up to 466 conditions per place. [2023-08-26 09:02:10,280 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 153 selfloop transitions, 349 changer transitions 9/515 dead transitions. [2023-08-26 09:02:10,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 515 transitions, 9194 flow [2023-08-26 09:02:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:02:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:02:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4652 transitions. [2023-08-26 09:02:10,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064657055482744 [2023-08-26 09:02:10,285 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4652 transitions. [2023-08-26 09:02:10,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4652 transitions. [2023-08-26 09:02:10,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:10,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4652 transitions. [2023-08-26 09:02:10,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 310.1333333333333) internal successors, (4652), 15 states have internal predecessors, (4652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:10,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:10,296 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:10,296 INFO L175 Difference]: Start difference. First operand has 272 places, 362 transitions, 6145 flow. Second operand 15 states and 4652 transitions. [2023-08-26 09:02:10,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 515 transitions, 9194 flow [2023-08-26 09:02:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 515 transitions, 8821 flow, removed 51 selfloop flow, removed 11 redundant places. [2023-08-26 09:02:10,521 INFO L231 Difference]: Finished difference. Result has 279 places, 445 transitions, 8268 flow [2023-08-26 09:02:10,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=5854, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8268, PETRI_PLACES=279, PETRI_TRANSITIONS=445} [2023-08-26 09:02:10,521 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 221 predicate places. [2023-08-26 09:02:10,521 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 445 transitions, 8268 flow [2023-08-26 09:02:10,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 307.09090909090907) internal successors, (3378), 11 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:10,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:10,522 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:10,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:10,727 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,SelfDestructingSolverStorable35 [2023-08-26 09:02:10,728 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:10,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2087870483, now seen corresponding path program 21 times [2023-08-26 09:02:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844282514] [2023-08-26 09:02:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:10,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:10,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844282514] [2023-08-26 09:02:10,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844282514] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:10,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053924205] [2023-08-26 09:02:10,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:02:10,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:10,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:10,800 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) [2023-08-26 09:02:10,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-26 09:02:10,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:02:10,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:10,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:10,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:11,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:11,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053924205] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:11,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:11,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-26 09:02:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586415830] [2023-08-26 09:02:11,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:11,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:11,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:11,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 445 transitions, 8268 flow. Second operand has 13 states, 13 states have (on average 306.61538461538464) internal successors, (3986), 13 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:11,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:11,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:11,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:11,902 INFO L124 PetriNetUnfolderBase]: 1689/3212 cut-off events. [2023-08-26 09:02:11,902 INFO L125 PetriNetUnfolderBase]: For 60521/60521 co-relation queries the response was YES. [2023-08-26 09:02:11,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23161 conditions, 3212 events. 1689/3212 cut-off events. For 60521/60521 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21408 event pairs, 325 based on Foata normal form. 6/3149 useless extension candidates. Maximal degree in co-relation 23071. Up to 783 conditions per place. [2023-08-26 09:02:11,934 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 168 selfloop transitions, 354 changer transitions 4/530 dead transitions. [2023-08-26 09:02:11,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 530 transitions, 10463 flow [2023-08-26 09:02:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:02:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:02:11,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4954 transitions. [2023-08-26 09:02:11,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057994757536042 [2023-08-26 09:02:11,937 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4954 transitions. [2023-08-26 09:02:11,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4954 transitions. [2023-08-26 09:02:11,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:11,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4954 transitions. [2023-08-26 09:02:11,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 309.625) internal successors, (4954), 16 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:11,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:11,945 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:11,945 INFO L175 Difference]: Start difference. First operand has 279 places, 445 transitions, 8268 flow. Second operand 16 states and 4954 transitions. [2023-08-26 09:02:11,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 530 transitions, 10463 flow [2023-08-26 09:02:12,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 530 transitions, 10182 flow, removed 98 selfloop flow, removed 3 redundant places. [2023-08-26 09:02:12,218 INFO L231 Difference]: Finished difference. Result has 296 places, 483 transitions, 9802 flow [2023-08-26 09:02:12,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=8029, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9802, PETRI_PLACES=296, PETRI_TRANSITIONS=483} [2023-08-26 09:02:12,219 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 238 predicate places. [2023-08-26 09:02:12,219 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 483 transitions, 9802 flow [2023-08-26 09:02:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.61538461538464) internal successors, (3986), 13 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:12,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:12,220 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:12,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:12,420 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,SelfDestructingSolverStorable36 [2023-08-26 09:02:12,420 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:12,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash -378711567, now seen corresponding path program 22 times [2023-08-26 09:02:12,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:12,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275618992] [2023-08-26 09:02:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:12,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275618992] [2023-08-26 09:02:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275618992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601448242] [2023-08-26 09:02:12,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:02:12,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:12,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:12,486 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) [2023-08-26 09:02:12,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-26 09:02:12,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:02:12,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:12,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:12,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:12,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:12,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601448242] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:12,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:12,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:02:12,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279131627] [2023-08-26 09:02:12,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:12,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:02:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:02:12,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:02:12,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:12,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 483 transitions, 9802 flow. Second operand has 12 states, 12 states have (on average 306.5) internal successors, (3678), 12 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:12,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:12,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:12,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:13,681 INFO L124 PetriNetUnfolderBase]: 1782/3386 cut-off events. [2023-08-26 09:02:13,681 INFO L125 PetriNetUnfolderBase]: For 72666/72666 co-relation queries the response was YES. [2023-08-26 09:02:13,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26045 conditions, 3386 events. 1782/3386 cut-off events. For 72666/72666 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22952 event pairs, 327 based on Foata normal form. 12/3320 useless extension candidates. Maximal degree in co-relation 25951. Up to 727 conditions per place. [2023-08-26 09:02:13,717 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 169 selfloop transitions, 378 changer transitions 5/556 dead transitions. [2023-08-26 09:02:13,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 556 transitions, 11850 flow [2023-08-26 09:02:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:02:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:02:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6806 transitions. [2023-08-26 09:02:13,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054569283927082 [2023-08-26 09:02:13,721 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6806 transitions. [2023-08-26 09:02:13,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6806 transitions. [2023-08-26 09:02:13,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:13,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6806 transitions. [2023-08-26 09:02:13,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 309.3636363636364) internal successors, (6806), 22 states have internal predecessors, (6806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:13,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 763.0) internal successors, (17549), 23 states have internal predecessors, (17549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:13,736 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 763.0) internal successors, (17549), 23 states have internal predecessors, (17549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:13,736 INFO L175 Difference]: Start difference. First operand has 296 places, 483 transitions, 9802 flow. Second operand 22 states and 6806 transitions. [2023-08-26 09:02:13,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 556 transitions, 11850 flow [2023-08-26 09:02:14,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 556 transitions, 11749 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-26 09:02:14,080 INFO L231 Difference]: Finished difference. Result has 316 places, 509 transitions, 11443 flow [2023-08-26 09:02:14,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=9680, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11443, PETRI_PLACES=316, PETRI_TRANSITIONS=509} [2023-08-26 09:02:14,081 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 258 predicate places. [2023-08-26 09:02:14,081 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 509 transitions, 11443 flow [2023-08-26 09:02:14,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 306.5) internal successors, (3678), 12 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:14,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:14,081 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:14,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:14,282 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,SelfDestructingSolverStorable37 [2023-08-26 09:02:14,282 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:14,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1355331211, now seen corresponding path program 23 times [2023-08-26 09:02:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456221226] [2023-08-26 09:02:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:14,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:14,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:14,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456221226] [2023-08-26 09:02:14,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456221226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:14,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986559417] [2023-08-26 09:02:14,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:02:14,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:14,348 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) [2023-08-26 09:02:14,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-26 09:02:14,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 09:02:14,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:14,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:14,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:14,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:14,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986559417] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:14,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:14,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:02:14,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371872541] [2023-08-26 09:02:14,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:14,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:02:14,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:14,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:02:14,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:02:14,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:14,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 509 transitions, 11443 flow. Second operand has 12 states, 12 states have (on average 306.4166666666667) internal successors, (3677), 12 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:14,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:14,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:15,499 INFO L124 PetriNetUnfolderBase]: 1739/3304 cut-off events. [2023-08-26 09:02:15,499 INFO L125 PetriNetUnfolderBase]: For 85158/85164 co-relation queries the response was YES. [2023-08-26 09:02:15,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26912 conditions, 3304 events. 1739/3304 cut-off events. For 85158/85164 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 22256 event pairs, 551 based on Foata normal form. 18/3255 useless extension candidates. Maximal degree in co-relation 26813. Up to 1557 conditions per place. [2023-08-26 09:02:15,538 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 312 selfloop transitions, 219 changer transitions 6/541 dead transitions. [2023-08-26 09:02:15,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 541 transitions, 12759 flow [2023-08-26 09:02:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:02:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:02:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4036 transitions. [2023-08-26 09:02:15,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068958564371408 [2023-08-26 09:02:15,541 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4036 transitions. [2023-08-26 09:02:15,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4036 transitions. [2023-08-26 09:02:15,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:15,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4036 transitions. [2023-08-26 09:02:15,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 310.46153846153845) internal successors, (4036), 13 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:15,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:15,547 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:15,547 INFO L175 Difference]: Start difference. First operand has 316 places, 509 transitions, 11443 flow. Second operand 13 states and 4036 transitions. [2023-08-26 09:02:15,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 541 transitions, 12759 flow [2023-08-26 09:02:15,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 541 transitions, 12506 flow, removed 12 selfloop flow, removed 19 redundant places. [2023-08-26 09:02:15,903 INFO L231 Difference]: Finished difference. Result has 308 places, 505 transitions, 11589 flow [2023-08-26 09:02:15,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=11145, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11589, PETRI_PLACES=308, PETRI_TRANSITIONS=505} [2023-08-26 09:02:15,904 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 250 predicate places. [2023-08-26 09:02:15,904 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 505 transitions, 11589 flow [2023-08-26 09:02:15,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 306.4166666666667) internal successors, (3677), 12 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:15,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:15,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:15,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-26 09:02:16,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-26 09:02:16,106 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:16,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2094692786, now seen corresponding path program 24 times [2023-08-26 09:02:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:16,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312914588] [2023-08-26 09:02:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:16,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:16,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312914588] [2023-08-26 09:02:16,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312914588] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:16,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837753913] [2023-08-26 09:02:16,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:02:16,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:16,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:16,173 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) [2023-08-26 09:02:16,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-26 09:02:16,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:02:16,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:16,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:16,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:16,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:16,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837753913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:16,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:16,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-26 09:02:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401591718] [2023-08-26 09:02:16,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:16,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:02:16,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:16,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:02:16,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:02:16,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:16,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 505 transitions, 11589 flow. Second operand has 11 states, 11 states have (on average 306.72727272727275) internal successors, (3374), 11 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:16,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:16,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:16,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:17,238 INFO L124 PetriNetUnfolderBase]: 1793/3401 cut-off events. [2023-08-26 09:02:17,238 INFO L125 PetriNetUnfolderBase]: For 88854/88860 co-relation queries the response was YES. [2023-08-26 09:02:17,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28136 conditions, 3401 events. 1793/3401 cut-off events. For 88854/88860 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22901 event pairs, 173 based on Foata normal form. 18/3344 useless extension candidates. Maximal degree in co-relation 28044. Up to 1310 conditions per place. [2023-08-26 09:02:17,277 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 443 selfloop transitions, 126 changer transitions 0/573 dead transitions. [2023-08-26 09:02:17,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 573 transitions, 13647 flow [2023-08-26 09:02:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:02:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:02:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3115 transitions. [2023-08-26 09:02:17,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40825688073394495 [2023-08-26 09:02:17,280 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3115 transitions. [2023-08-26 09:02:17,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3115 transitions. [2023-08-26 09:02:17,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:17,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3115 transitions. [2023-08-26 09:02:17,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 311.5) internal successors, (3115), 10 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:17,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 763.0) internal successors, (8393), 11 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:17,285 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 763.0) internal successors, (8393), 11 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:17,285 INFO L175 Difference]: Start difference. First operand has 308 places, 505 transitions, 11589 flow. Second operand 10 states and 3115 transitions. [2023-08-26 09:02:17,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 573 transitions, 13647 flow [2023-08-26 09:02:17,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 573 transitions, 13225 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-08-26 09:02:17,702 INFO L231 Difference]: Finished difference. Result has 307 places, 518 transitions, 11822 flow [2023-08-26 09:02:17,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=11178, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11822, PETRI_PLACES=307, PETRI_TRANSITIONS=518} [2023-08-26 09:02:17,703 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 249 predicate places. [2023-08-26 09:02:17,703 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 518 transitions, 11822 flow [2023-08-26 09:02:17,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 306.72727272727275) internal successors, (3374), 11 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:17,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:17,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:17,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-26 09:02:17,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-26 09:02:17,904 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:17,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:17,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1261684960, now seen corresponding path program 25 times [2023-08-26 09:02:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:17,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031618133] [2023-08-26 09:02:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:17,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031618133] [2023-08-26 09:02:17,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031618133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:17,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954187574] [2023-08-26 09:02:17,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:02:17,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:17,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:17,975 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) [2023-08-26 09:02:17,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-26 09:02:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:18,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:18,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:18,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954187574] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:18,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:18,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-26 09:02:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013099550] [2023-08-26 09:02:18,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:18,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:18,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 518 transitions, 11822 flow. Second operand has 13 states, 13 states have (on average 306.46153846153845) internal successors, (3984), 13 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:18,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:18,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:18,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:19,159 INFO L124 PetriNetUnfolderBase]: 1969/3733 cut-off events. [2023-08-26 09:02:19,159 INFO L125 PetriNetUnfolderBase]: For 105815/105821 co-relation queries the response was YES. [2023-08-26 09:02:19,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31069 conditions, 3733 events. 1969/3733 cut-off events. For 105815/105821 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 25700 event pairs, 313 based on Foata normal form. 54/3698 useless extension candidates. Maximal degree in co-relation 30974. Up to 1966 conditions per place. [2023-08-26 09:02:19,206 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 494 selfloop transitions, 114 changer transitions 0/612 dead transitions. [2023-08-26 09:02:19,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 612 transitions, 14667 flow [2023-08-26 09:02:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:02:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:02:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4346 transitions. [2023-08-26 09:02:19,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40685264931660736 [2023-08-26 09:02:19,209 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4346 transitions. [2023-08-26 09:02:19,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4346 transitions. [2023-08-26 09:02:19,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:19,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4346 transitions. [2023-08-26 09:02:19,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 310.42857142857144) internal successors, (4346), 14 states have internal predecessors, (4346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:19,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:19,217 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:19,217 INFO L175 Difference]: Start difference. First operand has 307 places, 518 transitions, 11822 flow. Second operand 14 states and 4346 transitions. [2023-08-26 09:02:19,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 612 transitions, 14667 flow [2023-08-26 09:02:19,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 612 transitions, 14316 flow, removed 100 selfloop flow, removed 4 redundant places. [2023-08-26 09:02:19,748 INFO L231 Difference]: Finished difference. Result has 326 places, 562 transitions, 12932 flow [2023-08-26 09:02:19,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=11628, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12932, PETRI_PLACES=326, PETRI_TRANSITIONS=562} [2023-08-26 09:02:19,749 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 268 predicate places. [2023-08-26 09:02:19,749 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 562 transitions, 12932 flow [2023-08-26 09:02:19,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.46153846153845) internal successors, (3984), 13 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:19,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:19,750 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:19,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-08-26 09:02:19,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:19,951 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:19,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:19,951 INFO L85 PathProgramCache]: Analyzing trace with hash 796922220, now seen corresponding path program 26 times [2023-08-26 09:02:19,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:19,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725958481] [2023-08-26 09:02:19,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:19,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725958481] [2023-08-26 09:02:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725958481] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911220476] [2023-08-26 09:02:20,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:02:20,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:20,019 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) [2023-08-26 09:02:20,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-26 09:02:20,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:02:20,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:20,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:20,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:20,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:20,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911220476] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:20,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:20,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:02:20,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111494687] [2023-08-26 09:02:20,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:20,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:02:20,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:02:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:02:20,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:20,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 562 transitions, 12932 flow. Second operand has 12 states, 12 states have (on average 306.6666666666667) internal successors, (3680), 12 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:20,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:20,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:20,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:21,317 INFO L124 PetriNetUnfolderBase]: 2176/4107 cut-off events. [2023-08-26 09:02:21,317 INFO L125 PetriNetUnfolderBase]: For 119002/119013 co-relation queries the response was YES. [2023-08-26 09:02:21,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34516 conditions, 4107 events. 2176/4107 cut-off events. For 119002/119013 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28623 event pairs, 335 based on Foata normal form. 53/4051 useless extension candidates. Maximal degree in co-relation 34412. Up to 1887 conditions per place. [2023-08-26 09:02:21,370 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 474 selfloop transitions, 201 changer transitions 1/680 dead transitions. [2023-08-26 09:02:21,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 680 transitions, 16461 flow [2023-08-26 09:02:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 09:02:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 09:02:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6503 transitions. [2023-08-26 09:02:21,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4058540847531673 [2023-08-26 09:02:21,375 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6503 transitions. [2023-08-26 09:02:21,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6503 transitions. [2023-08-26 09:02:21,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:21,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6503 transitions. [2023-08-26 09:02:21,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 309.6666666666667) internal successors, (6503), 21 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:21,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 763.0) internal successors, (16786), 22 states have internal predecessors, (16786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:21,390 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 763.0) internal successors, (16786), 22 states have internal predecessors, (16786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:21,390 INFO L175 Difference]: Start difference. First operand has 326 places, 562 transitions, 12932 flow. Second operand 21 states and 6503 transitions. [2023-08-26 09:02:21,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 680 transitions, 16461 flow [2023-08-26 09:02:22,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 680 transitions, 16005 flow, removed 207 selfloop flow, removed 1 redundant places. [2023-08-26 09:02:22,138 INFO L231 Difference]: Finished difference. Result has 355 places, 629 transitions, 14808 flow [2023-08-26 09:02:22,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=12620, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14808, PETRI_PLACES=355, PETRI_TRANSITIONS=629} [2023-08-26 09:02:22,139 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 297 predicate places. [2023-08-26 09:02:22,139 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 629 transitions, 14808 flow [2023-08-26 09:02:22,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 306.6666666666667) internal successors, (3680), 12 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:22,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:22,140 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:22,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-26 09:02:22,340 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,SelfDestructingSolverStorable41 [2023-08-26 09:02:22,341 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:22,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:22,341 INFO L85 PathProgramCache]: Analyzing trace with hash -659689636, now seen corresponding path program 27 times [2023-08-26 09:02:22,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:22,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409064746] [2023-08-26 09:02:22,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:22,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:22,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409064746] [2023-08-26 09:02:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409064746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172393101] [2023-08-26 09:02:22,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:02:22,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:22,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:22,408 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) [2023-08-26 09:02:22,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-26 09:02:22,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 09:02:22,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:22,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:22,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:22,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172393101] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:22,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:02:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798133636] [2023-08-26 09:02:22,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:02:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:02:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:02:22,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:22,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 629 transitions, 14808 flow. Second operand has 12 states, 12 states have (on average 306.4166666666667) internal successors, (3677), 12 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:22,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:22,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:22,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:23,749 INFO L124 PetriNetUnfolderBase]: 2178/4138 cut-off events. [2023-08-26 09:02:23,749 INFO L125 PetriNetUnfolderBase]: For 116456/116461 co-relation queries the response was YES. [2023-08-26 09:02:23,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35225 conditions, 4138 events. 2178/4138 cut-off events. For 116456/116461 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 29091 event pairs, 383 based on Foata normal form. 11/4044 useless extension candidates. Maximal degree in co-relation 35110. Up to 1861 conditions per place. [2023-08-26 09:02:23,802 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 486 selfloop transitions, 176 changer transitions 3/669 dead transitions. [2023-08-26 09:02:23,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 669 transitions, 16738 flow [2023-08-26 09:02:23,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:02:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:02:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4338 transitions. [2023-08-26 09:02:23,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061037258940273 [2023-08-26 09:02:23,805 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4338 transitions. [2023-08-26 09:02:23,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4338 transitions. [2023-08-26 09:02:23,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:23,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4338 transitions. [2023-08-26 09:02:23,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 309.85714285714283) internal successors, (4338), 14 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:23,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:23,812 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:23,812 INFO L175 Difference]: Start difference. First operand has 355 places, 629 transitions, 14808 flow. Second operand 14 states and 4338 transitions. [2023-08-26 09:02:23,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 669 transitions, 16738 flow [2023-08-26 09:02:24,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 669 transitions, 16079 flow, removed 230 selfloop flow, removed 12 redundant places. [2023-08-26 09:02:24,759 INFO L231 Difference]: Finished difference. Result has 358 places, 629 transitions, 14522 flow [2023-08-26 09:02:24,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=14154, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14522, PETRI_PLACES=358, PETRI_TRANSITIONS=629} [2023-08-26 09:02:24,760 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 300 predicate places. [2023-08-26 09:02:24,760 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 629 transitions, 14522 flow [2023-08-26 09:02:24,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 306.4166666666667) internal successors, (3677), 12 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:24,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:24,761 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:24,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:24,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:24,966 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:24,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:24,967 INFO L85 PathProgramCache]: Analyzing trace with hash -445963728, now seen corresponding path program 28 times [2023-08-26 09:02:24,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:24,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859350540] [2023-08-26 09:02:24,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:24,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:25,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:25,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859350540] [2023-08-26 09:02:25,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859350540] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:25,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623533770] [2023-08-26 09:02:25,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:02:25,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:25,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:25,063 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) [2023-08-26 09:02:25,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-26 09:02:25,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:02:25,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:25,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:25,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:25,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623533770] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:25,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:25,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-26 09:02:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963110159] [2023-08-26 09:02:25,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:25,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:02:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:25,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:02:25,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:02:25,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:25,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 629 transitions, 14522 flow. Second operand has 15 states, 15 states have (on average 306.8666666666667) internal successors, (4603), 15 states have internal predecessors, (4603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:25,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:25,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:25,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:26,969 INFO L124 PetriNetUnfolderBase]: 2705/5127 cut-off events. [2023-08-26 09:02:26,969 INFO L125 PetriNetUnfolderBase]: For 135080/135086 co-relation queries the response was YES. [2023-08-26 09:02:27,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42062 conditions, 5127 events. 2705/5127 cut-off events. For 135080/135086 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 37131 event pairs, 425 based on Foata normal form. 34/5010 useless extension candidates. Maximal degree in co-relation 41950. Up to 2219 conditions per place. [2023-08-26 09:02:27,028 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 565 selfloop transitions, 274 changer transitions 0/843 dead transitions. [2023-08-26 09:02:27,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 843 transitions, 19874 flow [2023-08-26 09:02:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 09:02:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 09:02:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 8350 transitions. [2023-08-26 09:02:27,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053201300907723 [2023-08-26 09:02:27,034 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 8350 transitions. [2023-08-26 09:02:27,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 8350 transitions. [2023-08-26 09:02:27,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:27,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 8350 transitions. [2023-08-26 09:02:27,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 309.25925925925924) internal successors, (8350), 27 states have internal predecessors, (8350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:27,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 763.0) internal successors, (21364), 28 states have internal predecessors, (21364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:27,051 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 763.0) internal successors, (21364), 28 states have internal predecessors, (21364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:27,051 INFO L175 Difference]: Start difference. First operand has 358 places, 629 transitions, 14522 flow. Second operand 27 states and 8350 transitions. [2023-08-26 09:02:27,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 843 transitions, 19874 flow [2023-08-26 09:02:27,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 843 transitions, 19378 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-08-26 09:02:27,992 INFO L231 Difference]: Finished difference. Result has 383 places, 776 transitions, 18005 flow [2023-08-26 09:02:27,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=14214, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=18005, PETRI_PLACES=383, PETRI_TRANSITIONS=776} [2023-08-26 09:02:27,994 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 325 predicate places. [2023-08-26 09:02:27,994 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 776 transitions, 18005 flow [2023-08-26 09:02:27,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 306.8666666666667) internal successors, (4603), 15 states have internal predecessors, (4603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:27,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:27,995 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:28,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:28,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:28,201 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:28,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:28,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1562221950, now seen corresponding path program 29 times [2023-08-26 09:02:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:28,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623334516] [2023-08-26 09:02:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:28,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:28,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:28,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623334516] [2023-08-26 09:02:28,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623334516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:28,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5233040] [2023-08-26 09:02:28,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:02:28,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:28,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:28,283 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) [2023-08-26 09:02:28,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-26 09:02:28,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:02:28,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:28,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:28,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:28,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:28,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5233040] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:28,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:28,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:02:28,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417933140] [2023-08-26 09:02:28,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:28,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:28,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:28,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:28,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:28,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 776 transitions, 18005 flow. Second operand has 13 states, 13 states have (on average 306.53846153846155) internal successors, (3985), 13 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:28,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:28,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:28,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:30,350 INFO L124 PetriNetUnfolderBase]: 2867/5408 cut-off events. [2023-08-26 09:02:30,350 INFO L125 PetriNetUnfolderBase]: For 154211/154216 co-relation queries the response was YES. [2023-08-26 09:02:30,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45663 conditions, 5408 events. 2867/5408 cut-off events. For 154211/154216 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 39402 event pairs, 451 based on Foata normal form. 39/5279 useless extension candidates. Maximal degree in co-relation 45542. Up to 1923 conditions per place. [2023-08-26 09:02:30,417 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 479 selfloop transitions, 377 changer transitions 0/860 dead transitions. [2023-08-26 09:02:30,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 860 transitions, 21235 flow [2023-08-26 09:02:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 09:02:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 09:02:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6193 transitions. [2023-08-26 09:02:30,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40583224115334204 [2023-08-26 09:02:30,420 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6193 transitions. [2023-08-26 09:02:30,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6193 transitions. [2023-08-26 09:02:30,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:30,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6193 transitions. [2023-08-26 09:02:30,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 309.65) internal successors, (6193), 20 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:30,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 763.0) internal successors, (16023), 21 states have internal predecessors, (16023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:30,430 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 763.0) internal successors, (16023), 21 states have internal predecessors, (16023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:30,430 INFO L175 Difference]: Start difference. First operand has 383 places, 776 transitions, 18005 flow. Second operand 20 states and 6193 transitions. [2023-08-26 09:02:30,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 860 transitions, 21235 flow [2023-08-26 09:02:31,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 860 transitions, 20964 flow, removed 80 selfloop flow, removed 9 redundant places. [2023-08-26 09:02:31,432 INFO L231 Difference]: Finished difference. Result has 400 places, 817 transitions, 20034 flow [2023-08-26 09:02:31,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=17636, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20034, PETRI_PLACES=400, PETRI_TRANSITIONS=817} [2023-08-26 09:02:31,433 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 342 predicate places. [2023-08-26 09:02:31,433 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 817 transitions, 20034 flow [2023-08-26 09:02:31,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.53846153846155) internal successors, (3985), 13 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:31,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:31,434 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:31,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:31,639 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,SelfDestructingSolverStorable44 [2023-08-26 09:02:31,639 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:31,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1297989452, now seen corresponding path program 30 times [2023-08-26 09:02:31,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:31,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373037357] [2023-08-26 09:02:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:31,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:31,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:31,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373037357] [2023-08-26 09:02:31,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373037357] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:31,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236434971] [2023-08-26 09:02:31,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:02:31,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:31,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:31,713 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) [2023-08-26 09:02:31,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-26 09:02:31,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 09:02:31,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:31,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:31,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:31,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:02:32,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236434971] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:32,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:32,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:02:32,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251356465] [2023-08-26 09:02:32,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:32,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:32,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:32,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:32,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:32,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:32,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 817 transitions, 20034 flow. Second operand has 13 states, 13 states have (on average 306.3076923076923) internal successors, (3982), 13 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:32,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:32,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:32,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:33,701 INFO L124 PetriNetUnfolderBase]: 2875/5469 cut-off events. [2023-08-26 09:02:33,702 INFO L125 PetriNetUnfolderBase]: For 163641/163646 co-relation queries the response was YES. [2023-08-26 09:02:33,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47848 conditions, 5469 events. 2875/5469 cut-off events. For 163641/163646 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 40452 event pairs, 549 based on Foata normal form. 15/5321 useless extension candidates. Maximal degree in co-relation 47720. Up to 1891 conditions per place. [2023-08-26 09:02:33,772 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 528 selfloop transitions, 323 changer transitions 0/855 dead transitions. [2023-08-26 09:02:33,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 855 transitions, 22307 flow [2023-08-26 09:02:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:02:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:02:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4646 transitions. [2023-08-26 09:02:33,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059414591524683 [2023-08-26 09:02:33,775 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4646 transitions. [2023-08-26 09:02:33,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4646 transitions. [2023-08-26 09:02:33,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:33,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4646 transitions. [2023-08-26 09:02:33,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 309.73333333333335) internal successors, (4646), 15 states have internal predecessors, (4646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:33,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:33,782 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:33,782 INFO L175 Difference]: Start difference. First operand has 400 places, 817 transitions, 20034 flow. Second operand 15 states and 4646 transitions. [2023-08-26 09:02:33,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 855 transitions, 22307 flow [2023-08-26 09:02:34,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 855 transitions, 21821 flow, removed 144 selfloop flow, removed 9 redundant places. [2023-08-26 09:02:35,016 INFO L231 Difference]: Finished difference. Result has 407 places, 819 transitions, 20280 flow [2023-08-26 09:02:35,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=19554, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=20280, PETRI_PLACES=407, PETRI_TRANSITIONS=819} [2023-08-26 09:02:35,017 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 349 predicate places. [2023-08-26 09:02:35,017 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 819 transitions, 20280 flow [2023-08-26 09:02:35,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.3076923076923) internal successors, (3982), 13 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:35,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:35,018 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:35,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-08-26 09:02:35,223 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,SelfDestructingSolverStorable45 [2023-08-26 09:02:35,223 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:35,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash 846928948, now seen corresponding path program 31 times [2023-08-26 09:02:35,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:35,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197982186] [2023-08-26 09:02:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:35,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197982186] [2023-08-26 09:02:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197982186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59532497] [2023-08-26 09:02:35,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:02:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:35,305 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) [2023-08-26 09:02:35,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-26 09:02:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:35,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:35,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:35,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:35,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59532497] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:35,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:35,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-26 09:02:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223282215] [2023-08-26 09:02:35,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:35,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:02:35,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:35,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:02:35,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:02:35,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:35,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 819 transitions, 20280 flow. Second operand has 15 states, 15 states have (on average 306.06666666666666) internal successors, (4591), 15 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:35,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:35,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:35,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:37,390 INFO L124 PetriNetUnfolderBase]: 2994/5714 cut-off events. [2023-08-26 09:02:37,391 INFO L125 PetriNetUnfolderBase]: For 176088/176099 co-relation queries the response was YES. [2023-08-26 09:02:37,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50128 conditions, 5714 events. 2994/5714 cut-off events. For 176088/176099 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 42811 event pairs, 569 based on Foata normal form. 21/5566 useless extension candidates. Maximal degree in co-relation 49998. Up to 1973 conditions per place. [2023-08-26 09:02:37,466 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 551 selfloop transitions, 330 changer transitions 13/898 dead transitions. [2023-08-26 09:02:37,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 898 transitions, 23637 flow [2023-08-26 09:02:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:02:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:02:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5260 transitions. [2023-08-26 09:02:37,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40552000616760464 [2023-08-26 09:02:37,469 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5260 transitions. [2023-08-26 09:02:37,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5260 transitions. [2023-08-26 09:02:37,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:37,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5260 transitions. [2023-08-26 09:02:37,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 309.4117647058824) internal successors, (5260), 17 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:37,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:37,478 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:37,478 INFO L175 Difference]: Start difference. First operand has 407 places, 819 transitions, 20280 flow. Second operand 17 states and 5260 transitions. [2023-08-26 09:02:37,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 898 transitions, 23637 flow [2023-08-26 09:02:38,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 898 transitions, 22979 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-08-26 09:02:38,723 INFO L231 Difference]: Finished difference. Result has 418 places, 841 transitions, 21070 flow [2023-08-26 09:02:38,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=19691, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21070, PETRI_PLACES=418, PETRI_TRANSITIONS=841} [2023-08-26 09:02:38,724 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 360 predicate places. [2023-08-26 09:02:38,724 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 841 transitions, 21070 flow [2023-08-26 09:02:38,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 306.06666666666666) internal successors, (4591), 15 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:38,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:38,725 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:38,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:38,930 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,SelfDestructingSolverStorable46 [2023-08-26 09:02:38,930 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:38,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1789464308, now seen corresponding path program 32 times [2023-08-26 09:02:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:38,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647947270] [2023-08-26 09:02:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:39,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:39,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647947270] [2023-08-26 09:02:39,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647947270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:39,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452657521] [2023-08-26 09:02:39,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:02:39,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:39,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:39,006 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) [2023-08-26 09:02:39,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-26 09:02:39,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:02:39,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:39,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:39,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:39,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:02:39,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452657521] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:39,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:39,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:02:39,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421824264] [2023-08-26 09:02:39,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:39,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:39,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:39,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:39,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:39,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:39,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 841 transitions, 21070 flow. Second operand has 13 states, 13 states have (on average 306.61538461538464) internal successors, (3986), 13 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:39,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:39,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:39,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:41,331 INFO L124 PetriNetUnfolderBase]: 3128/5883 cut-off events. [2023-08-26 09:02:41,331 INFO L125 PetriNetUnfolderBase]: For 198230/198242 co-relation queries the response was YES. [2023-08-26 09:02:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52626 conditions, 5883 events. 3128/5883 cut-off events. For 198230/198242 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 43834 event pairs, 1209 based on Foata normal form. 60/5731 useless extension candidates. Maximal degree in co-relation 52491. Up to 4314 conditions per place. [2023-08-26 09:02:41,419 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 790 selfloop transitions, 132 changer transitions 0/926 dead transitions. [2023-08-26 09:02:41,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 926 transitions, 24621 flow [2023-08-26 09:02:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:02:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:02:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4956 transitions. [2023-08-26 09:02:41,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059633027522936 [2023-08-26 09:02:41,423 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4956 transitions. [2023-08-26 09:02:41,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4956 transitions. [2023-08-26 09:02:41,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:41,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4956 transitions. [2023-08-26 09:02:41,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 309.75) internal successors, (4956), 16 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:41,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:41,436 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:41,436 INFO L175 Difference]: Start difference. First operand has 418 places, 841 transitions, 21070 flow. Second operand 16 states and 4956 transitions. [2023-08-26 09:02:41,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 926 transitions, 24621 flow [2023-08-26 09:02:42,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 926 transitions, 24269 flow, removed 39 selfloop flow, removed 7 redundant places. [2023-08-26 09:02:42,866 INFO L231 Difference]: Finished difference. Result has 431 places, 886 transitions, 22442 flow [2023-08-26 09:02:42,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=20562, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=22442, PETRI_PLACES=431, PETRI_TRANSITIONS=886} [2023-08-26 09:02:42,867 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 373 predicate places. [2023-08-26 09:02:42,867 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 886 transitions, 22442 flow [2023-08-26 09:02:42,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.61538461538464) internal successors, (3986), 13 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:42,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:42,868 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:42,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:43,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:43,069 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:43,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:43,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1368032848, now seen corresponding path program 33 times [2023-08-26 09:02:43,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:43,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760234250] [2023-08-26 09:02:43,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:43,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:43,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760234250] [2023-08-26 09:02:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760234250] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584827732] [2023-08-26 09:02:43,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:02:43,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:43,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:43,129 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) [2023-08-26 09:02:43,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-26 09:02:43,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:02:43,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:43,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:43,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:43,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:02:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584827732] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:43,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:43,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:02:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346350195] [2023-08-26 09:02:43,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:43,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:43,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:43,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:43,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:43,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 886 transitions, 22442 flow. Second operand has 13 states, 13 states have (on average 306.46153846153845) internal successors, (3984), 13 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:43,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:43,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:43,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:45,398 INFO L124 PetriNetUnfolderBase]: 3130/5928 cut-off events. [2023-08-26 09:02:45,399 INFO L125 PetriNetUnfolderBase]: For 194706/194718 co-relation queries the response was YES. [2023-08-26 09:02:45,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53091 conditions, 5928 events. 3130/5928 cut-off events. For 194706/194718 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 44392 event pairs, 1210 based on Foata normal form. 22/5773 useless extension candidates. Maximal degree in co-relation 52952. Up to 4290 conditions per place. [2023-08-26 09:02:45,490 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 786 selfloop transitions, 122 changer transitions 0/912 dead transitions. [2023-08-26 09:02:45,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 912 transitions, 24628 flow [2023-08-26 09:02:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:02:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:02:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3412 transitions. [2023-08-26 09:02:45,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065292505659478 [2023-08-26 09:02:45,493 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3412 transitions. [2023-08-26 09:02:45,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3412 transitions. [2023-08-26 09:02:45,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:45,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3412 transitions. [2023-08-26 09:02:45,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.1818181818182) internal successors, (3412), 11 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:45,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:45,500 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:45,500 INFO L175 Difference]: Start difference. First operand has 431 places, 886 transitions, 22442 flow. Second operand 11 states and 3412 transitions. [2023-08-26 09:02:45,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 912 transitions, 24628 flow [2023-08-26 09:02:46,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 912 transitions, 24193 flow, removed 180 selfloop flow, removed 8 redundant places. [2023-08-26 09:02:46,993 INFO L231 Difference]: Finished difference. Result has 435 places, 882 transitions, 22183 flow [2023-08-26 09:02:46,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=21876, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22183, PETRI_PLACES=435, PETRI_TRANSITIONS=882} [2023-08-26 09:02:46,994 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 377 predicate places. [2023-08-26 09:02:46,994 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 882 transitions, 22183 flow [2023-08-26 09:02:46,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.46153846153845) internal successors, (3984), 13 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:46,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:46,994 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:46,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:47,195 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,SelfDestructingSolverStorable48 [2023-08-26 09:02:47,196 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:47,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash -862630466, now seen corresponding path program 34 times [2023-08-26 09:02:47,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:47,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427816910] [2023-08-26 09:02:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:47,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427816910] [2023-08-26 09:02:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427816910] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081727374] [2023-08-26 09:02:47,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:02:47,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:47,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:47,269 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) [2023-08-26 09:02:47,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-26 09:02:47,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:02:47,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:47,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:47,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:47,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:47,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081727374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:47,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:47,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-26 09:02:47,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911389316] [2023-08-26 09:02:47,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:47,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:02:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:47,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:02:47,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:02:47,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:47,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 882 transitions, 22183 flow. Second operand has 15 states, 15 states have (on average 306.1333333333333) internal successors, (4592), 15 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:47,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:47,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:47,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:49,678 INFO L124 PetriNetUnfolderBase]: 3224/6097 cut-off events. [2023-08-26 09:02:49,678 INFO L125 PetriNetUnfolderBase]: For 199776/199788 co-relation queries the response was YES. [2023-08-26 09:02:49,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54599 conditions, 6097 events. 3224/6097 cut-off events. For 199776/199788 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 46056 event pairs, 1226 based on Foata normal form. 24/5894 useless extension candidates. Maximal degree in co-relation 54458. Up to 4319 conditions per place. [2023-08-26 09:02:49,764 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 808 selfloop transitions, 126 changer transitions 13/951 dead transitions. [2023-08-26 09:02:49,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 951 transitions, 25370 flow [2023-08-26 09:02:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:02:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:02:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5257 transitions. [2023-08-26 09:02:49,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40528872099298435 [2023-08-26 09:02:49,767 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5257 transitions. [2023-08-26 09:02:49,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5257 transitions. [2023-08-26 09:02:49,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:49,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5257 transitions. [2023-08-26 09:02:49,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 309.2352941176471) internal successors, (5257), 17 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:49,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:49,776 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:49,776 INFO L175 Difference]: Start difference. First operand has 435 places, 882 transitions, 22183 flow. Second operand 17 states and 5257 transitions. [2023-08-26 09:02:49,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 951 transitions, 25370 flow [2023-08-26 09:02:51,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 951 transitions, 25029 flow, removed 29 selfloop flow, removed 8 redundant places. [2023-08-26 09:02:51,255 INFO L231 Difference]: Finished difference. Result has 447 places, 896 transitions, 22573 flow [2023-08-26 09:02:51,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=21713, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22573, PETRI_PLACES=447, PETRI_TRANSITIONS=896} [2023-08-26 09:02:51,256 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 389 predicate places. [2023-08-26 09:02:51,256 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 896 transitions, 22573 flow [2023-08-26 09:02:51,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 306.1333333333333) internal successors, (4592), 15 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:51,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:51,257 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:51,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:51,457 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,SelfDestructingSolverStorable49 [2023-08-26 09:02:51,457 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:51,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:51,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1359059486, now seen corresponding path program 35 times [2023-08-26 09:02:51,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:51,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100052773] [2023-08-26 09:02:51,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:51,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:51,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:51,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100052773] [2023-08-26 09:02:51,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100052773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:51,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815055451] [2023-08-26 09:02:51,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:02:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:51,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:51,522 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:02:51,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-26 09:02:51,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 09:02:51,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:51,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:51,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:51,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:51,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815055451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:51,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:51,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:02:51,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299948988] [2023-08-26 09:02:51,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:51,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:02:51,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:02:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:02:51,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:51,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 896 transitions, 22573 flow. Second operand has 12 states, 12 states have (on average 306.5833333333333) internal successors, (3679), 12 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:51,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:51,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:51,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:53,979 INFO L124 PetriNetUnfolderBase]: 3273/6174 cut-off events. [2023-08-26 09:02:53,980 INFO L125 PetriNetUnfolderBase]: For 208435/208441 co-relation queries the response was YES. [2023-08-26 09:02:54,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55183 conditions, 6174 events. 3273/6174 cut-off events. For 208435/208441 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46686 event pairs, 1045 based on Foata normal form. 28/5962 useless extension candidates. Maximal degree in co-relation 55036. Up to 3626 conditions per place. [2023-08-26 09:02:54,076 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 657 selfloop transitions, 305 changer transitions 0/966 dead transitions. [2023-08-26 09:02:54,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 966 transitions, 25783 flow [2023-08-26 09:02:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:02:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:02:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5270 transitions. [2023-08-26 09:02:54,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40629095674967236 [2023-08-26 09:02:54,080 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5270 transitions. [2023-08-26 09:02:54,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5270 transitions. [2023-08-26 09:02:54,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:54,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5270 transitions. [2023-08-26 09:02:54,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 310.0) internal successors, (5270), 17 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:54,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:54,089 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:54,090 INFO L175 Difference]: Start difference. First operand has 447 places, 896 transitions, 22573 flow. Second operand 17 states and 5270 transitions. [2023-08-26 09:02:54,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 966 transitions, 25783 flow [2023-08-26 09:02:55,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 966 transitions, 25593 flow, removed 54 selfloop flow, removed 8 redundant places. [2023-08-26 09:02:55,629 INFO L231 Difference]: Finished difference. Result has 457 places, 920 transitions, 23951 flow [2023-08-26 09:02:55,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=22327, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=894, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=23951, PETRI_PLACES=457, PETRI_TRANSITIONS=920} [2023-08-26 09:02:55,630 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 399 predicate places. [2023-08-26 09:02:55,630 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 920 transitions, 23951 flow [2023-08-26 09:02:55,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 306.5833333333333) internal successors, (3679), 12 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:55,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:02:55,630 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:02:55,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-26 09:02:55,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:55,831 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:02:55,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:02:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1835399206, now seen corresponding path program 36 times [2023-08-26 09:02:55,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:02:55,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149980632] [2023-08-26 09:02:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:02:55,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:02:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:02:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:55,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:02:55,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149980632] [2023-08-26 09:02:55,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149980632] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:02:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977871873] [2023-08-26 09:02:55,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:02:55,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:02:55,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:02:55,889 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:02:55,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-26 09:02:56,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:02:56,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:02:56,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:02:56,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:02:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:56,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:02:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:02:56,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977871873] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:02:56,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:02:56,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-26 09:02:56,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279183086] [2023-08-26 09:02:56,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:02:56,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:02:56,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:02:56,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:02:56,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:02:56,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:02:56,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 920 transitions, 23951 flow. Second operand has 13 states, 13 states have (on average 306.6923076923077) internal successors, (3987), 13 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:56,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:02:56,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:02:56,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:02:58,355 INFO L124 PetriNetUnfolderBase]: 3286/6222 cut-off events. [2023-08-26 09:02:58,355 INFO L125 PetriNetUnfolderBase]: For 211023/211029 co-relation queries the response was YES. [2023-08-26 09:02:58,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56641 conditions, 6222 events. 3286/6222 cut-off events. For 211023/211029 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 47303 event pairs, 1081 based on Foata normal form. 12/5972 useless extension candidates. Maximal degree in co-relation 56492. Up to 3818 conditions per place. [2023-08-26 09:02:58,448 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 741 selfloop transitions, 205 changer transitions 8/958 dead transitions. [2023-08-26 09:02:58,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 958 transitions, 26458 flow [2023-08-26 09:02:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:02:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:02:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3720 transitions. [2023-08-26 09:02:58,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40629095674967236 [2023-08-26 09:02:58,451 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3720 transitions. [2023-08-26 09:02:58,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3720 transitions. [2023-08-26 09:02:58,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:02:58,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3720 transitions. [2023-08-26 09:02:58,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 310.0) internal successors, (3720), 12 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:58,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:58,457 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:02:58,457 INFO L175 Difference]: Start difference. First operand has 457 places, 920 transitions, 23951 flow. Second operand 12 states and 3720 transitions. [2023-08-26 09:02:58,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 958 transitions, 26458 flow [2023-08-26 09:03:00,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 958 transitions, 26054 flow, removed 174 selfloop flow, removed 5 redundant places. [2023-08-26 09:03:00,051 INFO L231 Difference]: Finished difference. Result has 466 places, 924 transitions, 24164 flow [2023-08-26 09:03:00,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=23547, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=920, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=24164, PETRI_PLACES=466, PETRI_TRANSITIONS=924} [2023-08-26 09:03:00,051 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 408 predicate places. [2023-08-26 09:03:00,052 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 924 transitions, 24164 flow [2023-08-26 09:03:00,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 306.6923076923077) internal successors, (3987), 13 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:00,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:00,052 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:00,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:00,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-08-26 09:03:00,253 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:00,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1870519294, now seen corresponding path program 37 times [2023-08-26 09:03:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:00,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579336810] [2023-08-26 09:03:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:00,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579336810] [2023-08-26 09:03:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579336810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442344541] [2023-08-26 09:03:00,322 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:03:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:00,325 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:00,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-26 09:03:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:00,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:03:00,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:00,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:00,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442344541] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:00,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:00,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:03:00,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500114870] [2023-08-26 09:03:00,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:00,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:03:00,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:03:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:03:00,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:03:00,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 924 transitions, 24164 flow. Second operand has 12 states, 12 states have (on average 306.5) internal successors, (3678), 12 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:00,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:00,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:03:00,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:02,782 INFO L124 PetriNetUnfolderBase]: 3278/6209 cut-off events. [2023-08-26 09:03:02,782 INFO L125 PetriNetUnfolderBase]: For 208610/208622 co-relation queries the response was YES. [2023-08-26 09:03:02,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56463 conditions, 6209 events. 3278/6209 cut-off events. For 208610/208622 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 47188 event pairs, 1032 based on Foata normal form. 14/5983 useless extension candidates. Maximal degree in co-relation 56310. Up to 3559 conditions per place. [2023-08-26 09:03:02,881 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 658 selfloop transitions, 294 changer transitions 0/956 dead transitions. [2023-08-26 09:03:02,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 956 transitions, 26442 flow [2023-08-26 09:03:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:03:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:03:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3726 transitions. [2023-08-26 09:03:02,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069462647444299 [2023-08-26 09:03:02,884 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3726 transitions. [2023-08-26 09:03:02,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3726 transitions. [2023-08-26 09:03:02,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:02,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3726 transitions. [2023-08-26 09:03:02,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 310.5) internal successors, (3726), 12 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:02,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:02,891 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:02,891 INFO L175 Difference]: Start difference. First operand has 466 places, 924 transitions, 24164 flow. Second operand 12 states and 3726 transitions. [2023-08-26 09:03:02,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 956 transitions, 26442 flow [2023-08-26 09:03:04,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 956 transitions, 26022 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-26 09:03:04,501 INFO L231 Difference]: Finished difference. Result has 468 places, 920 transitions, 24196 flow [2023-08-26 09:03:04,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=23543, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=24196, PETRI_PLACES=468, PETRI_TRANSITIONS=920} [2023-08-26 09:03:04,502 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 410 predicate places. [2023-08-26 09:03:04,502 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 920 transitions, 24196 flow [2023-08-26 09:03:04,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 306.5) internal successors, (3678), 12 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:04,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:04,502 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:04,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:04,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:04,703 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:04,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1306354982, now seen corresponding path program 38 times [2023-08-26 09:03:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:04,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981542188] [2023-08-26 09:03:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:04,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:04,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981542188] [2023-08-26 09:03:04,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981542188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:04,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856957105] [2023-08-26 09:03:04,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:03:04,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:04,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:04,767 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:04,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-26 09:03:04,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:03:04,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:04,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:03:04,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:04,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:05,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856957105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:05,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:05,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-26 09:03:05,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684438431] [2023-08-26 09:03:05,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:05,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:03:05,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:05,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:03:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:03:05,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:03:05,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 920 transitions, 24196 flow. Second operand has 11 states, 11 states have (on average 306.6363636363636) internal successors, (3373), 11 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:05,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:05,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:03:05,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:07,023 INFO L124 PetriNetUnfolderBase]: 3240/6125 cut-off events. [2023-08-26 09:03:07,023 INFO L125 PetriNetUnfolderBase]: For 208808/208820 co-relation queries the response was YES. [2023-08-26 09:03:07,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56042 conditions, 6125 events. 3240/6125 cut-off events. For 208808/208820 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 46312 event pairs, 1040 based on Foata normal form. 8/5869 useless extension candidates. Maximal degree in co-relation 55890. Up to 3681 conditions per place. [2023-08-26 09:03:07,111 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 719 selfloop transitions, 187 changer transitions 15/925 dead transitions. [2023-08-26 09:03:07,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 925 transitions, 25825 flow [2023-08-26 09:03:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:03:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:03:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2177 transitions. [2023-08-26 09:03:07,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076015727391874 [2023-08-26 09:03:07,113 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2177 transitions. [2023-08-26 09:03:07,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2177 transitions. [2023-08-26 09:03:07,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:07,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2177 transitions. [2023-08-26 09:03:07,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 311.0) internal successors, (2177), 7 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:07,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:07,116 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 763.0) internal successors, (6104), 8 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:07,116 INFO L175 Difference]: Start difference. First operand has 468 places, 920 transitions, 24196 flow. Second operand 7 states and 2177 transitions. [2023-08-26 09:03:07,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 925 transitions, 25825 flow [2023-08-26 09:03:08,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 925 transitions, 25197 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-08-26 09:03:08,672 INFO L231 Difference]: Finished difference. Result has 459 places, 901 transitions, 23320 flow [2023-08-26 09:03:08,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=23234, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=909, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23320, PETRI_PLACES=459, PETRI_TRANSITIONS=901} [2023-08-26 09:03:08,673 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 401 predicate places. [2023-08-26 09:03:08,674 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 901 transitions, 23320 flow [2023-08-26 09:03:08,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 306.6363636363636) internal successors, (3373), 11 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:08,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:08,674 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:08,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:08,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:08,879 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:08,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash 730584364, now seen corresponding path program 39 times [2023-08-26 09:03:08,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:08,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128737728] [2023-08-26 09:03:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:08,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:09,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128737728] [2023-08-26 09:03:09,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128737728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022450777] [2023-08-26 09:03:09,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:03:09,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:09,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:09,328 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:09,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-26 09:03:09,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 09:03:09,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:09,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:03:09,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:09,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022450777] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:09,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:09,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-26 09:03:09,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598052004] [2023-08-26 09:03:09,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:09,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 09:03:09,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 09:03:09,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2023-08-26 09:03:09,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:03:09,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 901 transitions, 23320 flow. Second operand has 25 states, 25 states have (on average 292.08) internal successors, (7302), 25 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:09,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:09,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:03:09,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:13,092 INFO L124 PetriNetUnfolderBase]: 3953/7554 cut-off events. [2023-08-26 09:03:13,092 INFO L125 PetriNetUnfolderBase]: For 260385/260397 co-relation queries the response was YES. [2023-08-26 09:03:13,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68295 conditions, 7554 events. 3953/7554 cut-off events. For 260385/260397 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 59793 event pairs, 559 based on Foata normal form. 7/7309 useless extension candidates. Maximal degree in co-relation 68146. Up to 4463 conditions per place. [2023-08-26 09:03:13,197 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 900 selfloop transitions, 247 changer transitions 15/1179 dead transitions. [2023-08-26 09:03:13,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1179 transitions, 31762 flow [2023-08-26 09:03:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:03:13,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:03:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4178 transitions. [2023-08-26 09:03:13,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911252574424265 [2023-08-26 09:03:13,199 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4178 transitions. [2023-08-26 09:03:13,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4178 transitions. [2023-08-26 09:03:13,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:13,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4178 transitions. [2023-08-26 09:03:13,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 298.42857142857144) internal successors, (4178), 14 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:13,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:13,206 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:13,206 INFO L175 Difference]: Start difference. First operand has 459 places, 901 transitions, 23320 flow. Second operand 14 states and 4178 transitions. [2023-08-26 09:03:13,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1179 transitions, 31762 flow [2023-08-26 09:03:15,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 1179 transitions, 31064 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-08-26 09:03:15,080 INFO L231 Difference]: Finished difference. Result has 466 places, 1047 transitions, 27558 flow [2023-08-26 09:03:15,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=22778, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=27558, PETRI_PLACES=466, PETRI_TRANSITIONS=1047} [2023-08-26 09:03:15,081 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 408 predicate places. [2023-08-26 09:03:15,081 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 1047 transitions, 27558 flow [2023-08-26 09:03:15,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 292.08) internal successors, (7302), 25 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:15,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:15,082 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:15,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:15,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-08-26 09:03:15,282 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:15,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:15,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1854668294, now seen corresponding path program 40 times [2023-08-26 09:03:15,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:15,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480849715] [2023-08-26 09:03:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:15,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:15,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480849715] [2023-08-26 09:03:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480849715] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234060313] [2023-08-26 09:03:15,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:03:15,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:15,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:15,716 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:15,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-26 09:03:15,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:03:15,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:15,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:03:15,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:16,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:16,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234060313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:16,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:16,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-26 09:03:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965542885] [2023-08-26 09:03:16,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:16,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:03:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:16,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:03:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:03:16,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:03:16,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1047 transitions, 27558 flow. Second operand has 20 states, 20 states have (on average 292.05) internal successors, (5841), 20 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:16,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:16,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:03:16,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:19,616 INFO L124 PetriNetUnfolderBase]: 3983/7630 cut-off events. [2023-08-26 09:03:19,616 INFO L125 PetriNetUnfolderBase]: For 276399/276408 co-relation queries the response was YES. [2023-08-26 09:03:19,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70872 conditions, 7630 events. 3983/7630 cut-off events. For 276399/276408 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 60606 event pairs, 561 based on Foata normal form. 5/7387 useless extension candidates. Maximal degree in co-relation 70719. Up to 5045 conditions per place. [2023-08-26 09:03:19,724 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 921 selfloop transitions, 222 changer transitions 17/1177 dead transitions. [2023-08-26 09:03:19,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1177 transitions, 32042 flow [2023-08-26 09:03:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:03:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:03:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4454 transitions. [2023-08-26 09:03:19,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891655744866754 [2023-08-26 09:03:19,727 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4454 transitions. [2023-08-26 09:03:19,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4454 transitions. [2023-08-26 09:03:19,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:19,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4454 transitions. [2023-08-26 09:03:19,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 296.93333333333334) internal successors, (4454), 15 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:19,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:19,734 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:19,734 INFO L175 Difference]: Start difference. First operand has 466 places, 1047 transitions, 27558 flow. Second operand 15 states and 4454 transitions. [2023-08-26 09:03:19,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1177 transitions, 32042 flow [2023-08-26 09:03:21,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1177 transitions, 31698 flow, removed 172 selfloop flow, removed 2 redundant places. [2023-08-26 09:03:21,895 INFO L231 Difference]: Finished difference. Result has 481 places, 1083 transitions, 28568 flow [2023-08-26 09:03:21,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=27260, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=852, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=28568, PETRI_PLACES=481, PETRI_TRANSITIONS=1083} [2023-08-26 09:03:21,895 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 423 predicate places. [2023-08-26 09:03:21,896 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 1083 transitions, 28568 flow [2023-08-26 09:03:21,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 292.05) internal successors, (5841), 20 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:21,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:21,896 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:21,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-08-26 09:03:22,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-08-26 09:03:22,097 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:22,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:22,097 INFO L85 PathProgramCache]: Analyzing trace with hash -151335262, now seen corresponding path program 41 times [2023-08-26 09:03:22,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:22,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521014662] [2023-08-26 09:03:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:22,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:22,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521014662] [2023-08-26 09:03:22,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521014662] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:22,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78214970] [2023-08-26 09:03:22,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:03:22,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:22,525 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:22,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-26 09:03:22,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:03:22,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:22,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:03:22,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:22,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:23,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78214970] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:23,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:23,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-26 09:03:23,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927476896] [2023-08-26 09:03:23,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:23,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:03:23,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:23,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:03:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:03:23,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:03:23,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 1083 transitions, 28568 flow. Second operand has 23 states, 23 states have (on average 292.0869565217391) internal successors, (6718), 23 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:23,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:23,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:03:23,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:26,238 INFO L124 PetriNetUnfolderBase]: 3966/7593 cut-off events. [2023-08-26 09:03:26,239 INFO L125 PetriNetUnfolderBase]: For 279647/279664 co-relation queries the response was YES. [2023-08-26 09:03:26,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71657 conditions, 7593 events. 3966/7593 cut-off events. For 279647/279664 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 60311 event pairs, 555 based on Foata normal form. 7/7352 useless extension candidates. Maximal degree in co-relation 71500. Up to 4688 conditions per place. [2023-08-26 09:03:26,345 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 899 selfloop transitions, 280 changer transitions 10/1206 dead transitions. [2023-08-26 09:03:26,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 1206 transitions, 33235 flow [2023-08-26 09:03:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:03:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:03:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4166 transitions. [2023-08-26 09:03:26,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39000187230855643 [2023-08-26 09:03:26,347 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4166 transitions. [2023-08-26 09:03:26,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4166 transitions. [2023-08-26 09:03:26,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:26,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4166 transitions. [2023-08-26 09:03:26,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 297.57142857142856) internal successors, (4166), 14 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:26,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:26,354 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:26,354 INFO L175 Difference]: Start difference. First operand has 481 places, 1083 transitions, 28568 flow. Second operand 14 states and 4166 transitions. [2023-08-26 09:03:26,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 1206 transitions, 33235 flow [2023-08-26 09:03:28,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1206 transitions, 32894 flow, removed 39 selfloop flow, removed 8 redundant places. [2023-08-26 09:03:28,669 INFO L231 Difference]: Finished difference. Result has 487 places, 1094 transitions, 29188 flow [2023-08-26 09:03:28,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=28261, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=29188, PETRI_PLACES=487, PETRI_TRANSITIONS=1094} [2023-08-26 09:03:28,670 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 429 predicate places. [2023-08-26 09:03:28,670 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 1094 transitions, 29188 flow [2023-08-26 09:03:28,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 292.0869565217391) internal successors, (6718), 23 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:28,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:28,671 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:28,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-08-26 09:03:28,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-08-26 09:03:28,872 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:28,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash 493551510, now seen corresponding path program 42 times [2023-08-26 09:03:28,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:28,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114987923] [2023-08-26 09:03:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:28,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114987923] [2023-08-26 09:03:29,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114987923] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434540427] [2023-08-26 09:03:29,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:03:29,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:29,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:29,285 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:29,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-26 09:03:29,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:03:29,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:29,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:03:29,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:29,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:29,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434540427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:29,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:29,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-26 09:03:29,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181681068] [2023-08-26 09:03:29,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:29,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:03:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:29,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:03:29,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:03:29,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:03:29,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1094 transitions, 29188 flow. Second operand has 23 states, 23 states have (on average 292.1304347826087) internal successors, (6719), 23 states have internal predecessors, (6719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:29,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:29,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:03:29,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:33,095 INFO L124 PetriNetUnfolderBase]: 3963/7580 cut-off events. [2023-08-26 09:03:33,095 INFO L125 PetriNetUnfolderBase]: For 282501/282514 co-relation queries the response was YES. [2023-08-26 09:03:33,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71995 conditions, 7580 events. 3963/7580 cut-off events. For 282501/282514 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 60122 event pairs, 559 based on Foata normal form. 5/7335 useless extension candidates. Maximal degree in co-relation 71837. Up to 4467 conditions per place. [2023-08-26 09:03:33,207 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 878 selfloop transitions, 295 changer transitions 25/1215 dead transitions. [2023-08-26 09:03:33,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1215 transitions, 33992 flow [2023-08-26 09:03:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:03:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:03:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4459 transitions. [2023-08-26 09:03:33,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38960244648318043 [2023-08-26 09:03:33,210 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4459 transitions. [2023-08-26 09:03:33,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4459 transitions. [2023-08-26 09:03:33,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:33,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4459 transitions. [2023-08-26 09:03:33,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 297.26666666666665) internal successors, (4459), 15 states have internal predecessors, (4459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:33,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:33,217 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:33,217 INFO L175 Difference]: Start difference. First operand has 487 places, 1094 transitions, 29188 flow. Second operand 15 states and 4459 transitions. [2023-08-26 09:03:33,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1215 transitions, 33992 flow [2023-08-26 09:03:35,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 1215 transitions, 33406 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-08-26 09:03:35,678 INFO L231 Difference]: Finished difference. Result has 496 places, 1095 transitions, 29464 flow [2023-08-26 09:03:35,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=28614, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=29464, PETRI_PLACES=496, PETRI_TRANSITIONS=1095} [2023-08-26 09:03:35,679 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 438 predicate places. [2023-08-26 09:03:35,680 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 1095 transitions, 29464 flow [2023-08-26 09:03:35,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 292.1304347826087) internal successors, (6719), 23 states have internal predecessors, (6719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:35,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:35,681 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:35,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:35,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:35,886 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:35,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:35,886 INFO L85 PathProgramCache]: Analyzing trace with hash 594660152, now seen corresponding path program 43 times [2023-08-26 09:03:35,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120534463] [2023-08-26 09:03:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:36,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:36,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120534463] [2023-08-26 09:03:36,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120534463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:36,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744594157] [2023-08-26 09:03:36,276 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:03:36,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:36,277 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:36,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-26 09:03:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:36,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:03:36,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:36,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:36,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744594157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:36,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:36,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-26 09:03:36,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013635998] [2023-08-26 09:03:36,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:36,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:03:36,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:36,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:03:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:03:36,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:03:36,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1095 transitions, 29464 flow. Second operand has 24 states, 24 states have (on average 292.125) internal successors, (7011), 24 states have internal predecessors, (7011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:36,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:36,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:03:36,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:40,274 INFO L124 PetriNetUnfolderBase]: 4107/7849 cut-off events. [2023-08-26 09:03:40,274 INFO L125 PetriNetUnfolderBase]: For 313537/313550 co-relation queries the response was YES. [2023-08-26 09:03:40,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76125 conditions, 7849 events. 4107/7849 cut-off events. For 313537/313550 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 62532 event pairs, 536 based on Foata normal form. 4/7613 useless extension candidates. Maximal degree in co-relation 75961. Up to 4702 conditions per place. [2023-08-26 09:03:40,403 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 948 selfloop transitions, 287 changer transitions 13/1265 dead transitions. [2023-08-26 09:03:40,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 1265 transitions, 35557 flow [2023-08-26 09:03:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 09:03:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 09:03:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5344 transitions. [2023-08-26 09:03:40,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891073248871414 [2023-08-26 09:03:40,407 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5344 transitions. [2023-08-26 09:03:40,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5344 transitions. [2023-08-26 09:03:40,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:40,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5344 transitions. [2023-08-26 09:03:40,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 296.8888888888889) internal successors, (5344), 18 states have internal predecessors, (5344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:40,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 763.0) internal successors, (14497), 19 states have internal predecessors, (14497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:40,417 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 763.0) internal successors, (14497), 19 states have internal predecessors, (14497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:40,417 INFO L175 Difference]: Start difference. First operand has 496 places, 1095 transitions, 29464 flow. Second operand 18 states and 5344 transitions. [2023-08-26 09:03:40,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 1265 transitions, 35557 flow [2023-08-26 09:03:43,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 1265 transitions, 35000 flow, removed 51 selfloop flow, removed 9 redundant places. [2023-08-26 09:03:43,276 INFO L231 Difference]: Finished difference. Result has 508 places, 1137 transitions, 31005 flow [2023-08-26 09:03:43,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=28937, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=31005, PETRI_PLACES=508, PETRI_TRANSITIONS=1137} [2023-08-26 09:03:43,277 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 450 predicate places. [2023-08-26 09:03:43,277 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 1137 transitions, 31005 flow [2023-08-26 09:03:43,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.125) internal successors, (7011), 24 states have internal predecessors, (7011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:43,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:43,278 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:43,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:43,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-08-26 09:03:43,483 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:43,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1317991972, now seen corresponding path program 44 times [2023-08-26 09:03:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:43,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194493071] [2023-08-26 09:03:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:43,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:43,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194493071] [2023-08-26 09:03:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194493071] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782573334] [2023-08-26 09:03:43,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:03:43,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:43,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:43,817 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:43,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-26 09:03:43,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:03:43,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:43,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:03:43,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:44,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:44,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782573334] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:44,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:44,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-26 09:03:44,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749137490] [2023-08-26 09:03:44,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:44,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:03:44,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:44,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:03:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:03:44,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:03:44,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1137 transitions, 31005 flow. Second operand has 24 states, 24 states have (on average 292.0416666666667) internal successors, (7009), 24 states have internal predecessors, (7009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:44,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:44,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:03:44,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:47,762 INFO L124 PetriNetUnfolderBase]: 4106/7840 cut-off events. [2023-08-26 09:03:47,762 INFO L125 PetriNetUnfolderBase]: For 330323/330340 co-relation queries the response was YES. [2023-08-26 09:03:47,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77619 conditions, 7840 events. 4106/7840 cut-off events. For 330323/330340 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 62412 event pairs, 544 based on Foata normal form. 7/7607 useless extension candidates. Maximal degree in co-relation 77451. Up to 4702 conditions per place. [2023-08-26 09:03:47,884 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 943 selfloop transitions, 285 changer transitions 15/1260 dead transitions. [2023-08-26 09:03:47,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1260 transitions, 35922 flow [2023-08-26 09:03:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:03:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:03:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4467 transitions. [2023-08-26 09:03:47,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39030144167758846 [2023-08-26 09:03:47,886 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4467 transitions. [2023-08-26 09:03:47,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4467 transitions. [2023-08-26 09:03:47,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:47,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4467 transitions. [2023-08-26 09:03:47,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 297.8) internal successors, (4467), 15 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:47,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:47,893 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:47,893 INFO L175 Difference]: Start difference. First operand has 508 places, 1137 transitions, 31005 flow. Second operand 15 states and 4467 transitions. [2023-08-26 09:03:47,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 1260 transitions, 35922 flow [2023-08-26 09:03:50,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1260 transitions, 35407 flow, removed 136 selfloop flow, removed 7 redundant places. [2023-08-26 09:03:51,026 INFO L231 Difference]: Finished difference. Result has 517 places, 1140 transitions, 31208 flow [2023-08-26 09:03:51,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=30558, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=854, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=31208, PETRI_PLACES=517, PETRI_TRANSITIONS=1140} [2023-08-26 09:03:51,028 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 459 predicate places. [2023-08-26 09:03:51,028 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 1140 transitions, 31208 flow [2023-08-26 09:03:51,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.0416666666667) internal successors, (7009), 24 states have internal predecessors, (7009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:51,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:51,029 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:51,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:51,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-08-26 09:03:51,234 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:51,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:51,235 INFO L85 PathProgramCache]: Analyzing trace with hash 393953486, now seen corresponding path program 45 times [2023-08-26 09:03:51,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:51,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4027255] [2023-08-26 09:03:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:51,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:51,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4027255] [2023-08-26 09:03:51,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4027255] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676593673] [2023-08-26 09:03:51,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:03:51,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:51,565 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:51,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-26 09:03:51,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 09:03:51,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:51,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:03:51,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:52,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:52,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676593673] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:52,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:52,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-26 09:03:52,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777530250] [2023-08-26 09:03:52,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:52,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:03:52,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:03:52,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:03:52,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:03:52,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1140 transitions, 31208 flow. Second operand has 22 states, 22 states have (on average 292.1363636363636) internal successors, (6427), 22 states have internal predecessors, (6427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:52,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:52,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:03:52,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:03:55,700 INFO L124 PetriNetUnfolderBase]: 4103/7831 cut-off events. [2023-08-26 09:03:55,700 INFO L125 PetriNetUnfolderBase]: For 313156/313173 co-relation queries the response was YES. [2023-08-26 09:03:55,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76517 conditions, 7831 events. 4103/7831 cut-off events. For 313156/313173 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 62302 event pairs, 536 based on Foata normal form. 7/7598 useless extension candidates. Maximal degree in co-relation 76346. Up to 4732 conditions per place. [2023-08-26 09:03:55,830 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 953 selfloop transitions, 274 changer transitions 17/1261 dead transitions. [2023-08-26 09:03:55,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1261 transitions, 36128 flow [2023-08-26 09:03:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:03:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:03:55,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5038 transitions. [2023-08-26 09:03:55,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884049032457019 [2023-08-26 09:03:55,833 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5038 transitions. [2023-08-26 09:03:55,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5038 transitions. [2023-08-26 09:03:55,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:03:55,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5038 transitions. [2023-08-26 09:03:55,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 296.3529411764706) internal successors, (5038), 17 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:55,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:55,841 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:55,842 INFO L175 Difference]: Start difference. First operand has 517 places, 1140 transitions, 31208 flow. Second operand 17 states and 5038 transitions. [2023-08-26 09:03:55,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1261 transitions, 36128 flow [2023-08-26 09:03:58,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 1261 transitions, 35523 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-08-26 09:03:58,630 INFO L231 Difference]: Finished difference. Result has 525 places, 1148 transitions, 31533 flow [2023-08-26 09:03:58,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=30625, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=31533, PETRI_PLACES=525, PETRI_TRANSITIONS=1148} [2023-08-26 09:03:58,631 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 467 predicate places. [2023-08-26 09:03:58,631 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 1148 transitions, 31533 flow [2023-08-26 09:03:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 292.1363636363636) internal successors, (6427), 22 states have internal predecessors, (6427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:58,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:03:58,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:03:58,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-08-26 09:03:58,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:58,833 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:03:58,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:03:58,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1501217536, now seen corresponding path program 46 times [2023-08-26 09:03:58,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:03:58,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912392680] [2023-08-26 09:03:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:03:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:03:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:03:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:59,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:03:59,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912392680] [2023-08-26 09:03:59,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912392680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:03:59,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606872941] [2023-08-26 09:03:59,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:03:59,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:03:59,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:03:59,254 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:03:59,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-26 09:03:59,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:03:59,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:03:59,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:03:59,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:03:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:59,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:03:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:03:59,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606872941] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:03:59,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:03:59,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2023-08-26 09:03:59,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803256501] [2023-08-26 09:03:59,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:03:59,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 09:03:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:03:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 09:03:59,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2023-08-26 09:03:59,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:03:59,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 1148 transitions, 31533 flow. Second operand has 25 states, 25 states have (on average 292.08) internal successors, (7302), 25 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:03:59,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:03:59,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:03:59,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:04:03,564 INFO L124 PetriNetUnfolderBase]: 4667/8888 cut-off events. [2023-08-26 09:04:03,564 INFO L125 PetriNetUnfolderBase]: For 382462/382479 co-relation queries the response was YES. [2023-08-26 09:04:03,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88544 conditions, 8888 events. 4667/8888 cut-off events. For 382462/382479 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 72576 event pairs, 651 based on Foata normal form. 7/8605 useless extension candidates. Maximal degree in co-relation 88369. Up to 6026 conditions per place. [2023-08-26 09:04:03,705 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1112 selfloop transitions, 245 changer transitions 14/1388 dead transitions. [2023-08-26 09:04:03,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 1388 transitions, 40443 flow [2023-08-26 09:04:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:04:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:04:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4162 transitions. [2023-08-26 09:04:03,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896274105972664 [2023-08-26 09:04:03,712 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4162 transitions. [2023-08-26 09:04:03,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4162 transitions. [2023-08-26 09:04:03,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:04:03,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4162 transitions. [2023-08-26 09:04:03,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 297.2857142857143) internal successors, (4162), 14 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:03,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:03,721 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:03,721 INFO L175 Difference]: Start difference. First operand has 525 places, 1148 transitions, 31533 flow. Second operand 14 states and 4162 transitions. [2023-08-26 09:04:03,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 1388 transitions, 40443 flow [2023-08-26 09:04:07,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1388 transitions, 39808 flow, removed 32 selfloop flow, removed 12 redundant places. [2023-08-26 09:04:07,374 INFO L231 Difference]: Finished difference. Result has 536 places, 1286 transitions, 36225 flow [2023-08-26 09:04:07,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=31056, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=929, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=36225, PETRI_PLACES=536, PETRI_TRANSITIONS=1286} [2023-08-26 09:04:07,375 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 478 predicate places. [2023-08-26 09:04:07,375 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 1286 transitions, 36225 flow [2023-08-26 09:04:07,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 292.08) internal successors, (7302), 25 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:07,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:04:07,376 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:04:07,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-08-26 09:04:07,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-08-26 09:04:07,581 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:04:07,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:04:07,581 INFO L85 PathProgramCache]: Analyzing trace with hash 568742540, now seen corresponding path program 47 times [2023-08-26 09:04:07,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:04:07,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77447103] [2023-08-26 09:04:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:04:07,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:04:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:04:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:07,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:04:07,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77447103] [2023-08-26 09:04:07,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77447103] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:04:07,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407801902] [2023-08-26 09:04:07,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:04:07,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:04:07,942 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:04:07,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-26 09:04:08,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-26 09:04:08,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:04:08,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:04:08,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:04:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:08,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:04:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:08,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407801902] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:04:08,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:04:08,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2023-08-26 09:04:08,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321151685] [2023-08-26 09:04:08,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:04:08,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 09:04:08,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:04:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 09:04:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2023-08-26 09:04:08,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:04:08,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1286 transitions, 36225 flow. Second operand has 25 states, 25 states have (on average 292.0) internal successors, (7300), 25 states have internal predecessors, (7300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:08,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:04:08,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:04:08,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:04:12,896 INFO L124 PetriNetUnfolderBase]: 4666/8881 cut-off events. [2023-08-26 09:04:12,896 INFO L125 PetriNetUnfolderBase]: For 397043/397060 co-relation queries the response was YES. [2023-08-26 09:04:13,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90309 conditions, 8881 events. 4666/8881 cut-off events. For 397043/397060 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 72414 event pairs, 666 based on Foata normal form. 7/8598 useless extension candidates. Maximal degree in co-relation 90124. Up to 6026 conditions per place. [2023-08-26 09:04:13,059 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1111 selfloop transitions, 240 changer transitions 16/1384 dead transitions. [2023-08-26 09:04:13,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 1384 transitions, 40983 flow [2023-08-26 09:04:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:04:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:04:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3575 transitions. [2023-08-26 09:04:13,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904543468763652 [2023-08-26 09:04:13,062 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3575 transitions. [2023-08-26 09:04:13,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3575 transitions. [2023-08-26 09:04:13,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:04:13,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3575 transitions. [2023-08-26 09:04:13,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 297.9166666666667) internal successors, (3575), 12 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:13,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:13,068 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:13,068 INFO L175 Difference]: Start difference. First operand has 536 places, 1286 transitions, 36225 flow. Second operand 12 states and 3575 transitions. [2023-08-26 09:04:13,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 1384 transitions, 40983 flow [2023-08-26 09:04:17,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 1384 transitions, 40711 flow, removed 136 selfloop flow, removed 1 redundant places. [2023-08-26 09:04:17,248 INFO L231 Difference]: Finished difference. Result has 549 places, 1291 transitions, 36690 flow [2023-08-26 09:04:17,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=35987, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1048, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=36690, PETRI_PLACES=549, PETRI_TRANSITIONS=1291} [2023-08-26 09:04:17,249 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 491 predicate places. [2023-08-26 09:04:17,249 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 1291 transitions, 36690 flow [2023-08-26 09:04:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 292.0) internal successors, (7300), 25 states have internal predecessors, (7300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:17,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:04:17,250 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:04:17,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-08-26 09:04:17,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:17,450 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:04:17,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:04:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2130830660, now seen corresponding path program 48 times [2023-08-26 09:04:17,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:04:17,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59487637] [2023-08-26 09:04:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:04:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:04:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:04:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:17,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:04:17,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59487637] [2023-08-26 09:04:17,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59487637] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:04:17,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641486670] [2023-08-26 09:04:17,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:04:17,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:04:17,852 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:04:17,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-26 09:04:18,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-26 09:04:18,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:04:18,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:04:18,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:04:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:18,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:04:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:18,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641486670] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:04:18,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:04:18,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2023-08-26 09:04:18,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987287406] [2023-08-26 09:04:18,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:04:18,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:04:18,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:04:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:04:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:04:18,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:04:18,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 1291 transitions, 36690 flow. Second operand has 23 states, 23 states have (on average 292.0869565217391) internal successors, (6718), 23 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:18,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:04:18,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:04:18,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:04:22,801 INFO L124 PetriNetUnfolderBase]: 4670/8899 cut-off events. [2023-08-26 09:04:22,801 INFO L125 PetriNetUnfolderBase]: For 401198/401211 co-relation queries the response was YES. [2023-08-26 09:04:22,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91136 conditions, 8899 events. 4670/8899 cut-off events. For 401198/401211 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 72744 event pairs, 651 based on Foata normal form. 4/8613 useless extension candidates. Maximal degree in co-relation 90947. Up to 6101 conditions per place. [2023-08-26 09:04:22,972 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1129 selfloop transitions, 226 changer transitions 19/1391 dead transitions. [2023-08-26 09:04:22,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1391 transitions, 41559 flow [2023-08-26 09:04:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:04:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:04:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4448 transitions. [2023-08-26 09:04:22,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886413280908694 [2023-08-26 09:04:22,975 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4448 transitions. [2023-08-26 09:04:22,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4448 transitions. [2023-08-26 09:04:22,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:04:22,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4448 transitions. [2023-08-26 09:04:22,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 296.53333333333336) internal successors, (4448), 15 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:23,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:23,135 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:23,135 INFO L175 Difference]: Start difference. First operand has 549 places, 1291 transitions, 36690 flow. Second operand 15 states and 4448 transitions. [2023-08-26 09:04:23,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1391 transitions, 41559 flow [2023-08-26 09:04:27,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 1391 transitions, 41179 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-26 09:04:27,265 INFO L231 Difference]: Finished difference. Result has 559 places, 1298 transitions, 37087 flow [2023-08-26 09:04:27,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=36332, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1069, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=37087, PETRI_PLACES=559, PETRI_TRANSITIONS=1298} [2023-08-26 09:04:27,267 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 501 predicate places. [2023-08-26 09:04:27,267 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 1298 transitions, 37087 flow [2023-08-26 09:04:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 292.0869565217391) internal successors, (6718), 23 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:27,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:04:27,268 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:04:27,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-08-26 09:04:27,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-08-26 09:04:27,473 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:04:27,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:04:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1806393014, now seen corresponding path program 49 times [2023-08-26 09:04:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:04:27,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852271926] [2023-08-26 09:04:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:04:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:04:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:04:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:27,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:04:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852271926] [2023-08-26 09:04:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852271926] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:04:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214700200] [2023-08-26 09:04:27,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:04:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:27,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:04:27,820 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:04:27,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-26 09:04:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:04:27,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:04:27,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:04:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:28,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:04:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214700200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:04:28,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:04:28,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2023-08-26 09:04:28,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547197207] [2023-08-26 09:04:28,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:04:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:04:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:04:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:04:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:04:28,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:04:28,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1298 transitions, 37087 flow. Second operand has 20 states, 20 states have (on average 292.2) internal successors, (5844), 20 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:28,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:04:28,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:04:28,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:04:32,574 INFO L124 PetriNetUnfolderBase]: 4669/8892 cut-off events. [2023-08-26 09:04:32,574 INFO L125 PetriNetUnfolderBase]: For 409325/409338 co-relation queries the response was YES. [2023-08-26 09:04:32,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91703 conditions, 8892 events. 4669/8892 cut-off events. For 409325/409338 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 72662 event pairs, 655 based on Foata normal form. 4/8606 useless extension candidates. Maximal degree in co-relation 91511. Up to 6440 conditions per place. [2023-08-26 09:04:32,724 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1166 selfloop transitions, 181 changer transitions 12/1376 dead transitions. [2023-08-26 09:04:32,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1376 transitions, 41365 flow [2023-08-26 09:04:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:04:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:04:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3855 transitions. [2023-08-26 09:04:32,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886480491985079 [2023-08-26 09:04:32,727 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3855 transitions. [2023-08-26 09:04:32,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3855 transitions. [2023-08-26 09:04:32,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:04:32,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3855 transitions. [2023-08-26 09:04:32,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 296.53846153846155) internal successors, (3855), 13 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:32,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:32,733 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:32,733 INFO L175 Difference]: Start difference. First operand has 559 places, 1298 transitions, 37087 flow. Second operand 13 states and 3855 transitions. [2023-08-26 09:04:32,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 1376 transitions, 41365 flow [2023-08-26 09:04:36,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 1376 transitions, 40894 flow, removed 21 selfloop flow, removed 10 redundant places. [2023-08-26 09:04:36,801 INFO L231 Difference]: Finished difference. Result has 565 places, 1309 transitions, 37490 flow [2023-08-26 09:04:36,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=36636, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=37490, PETRI_PLACES=565, PETRI_TRANSITIONS=1309} [2023-08-26 09:04:36,802 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 507 predicate places. [2023-08-26 09:04:36,802 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 1309 transitions, 37490 flow [2023-08-26 09:04:36,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 292.2) internal successors, (5844), 20 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:36,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:04:36,802 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:04:36,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-08-26 09:04:37,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:37,003 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:04:37,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:04:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash 449119170, now seen corresponding path program 50 times [2023-08-26 09:04:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:04:37,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814881075] [2023-08-26 09:04:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:04:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:04:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:04:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:04:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814881075] [2023-08-26 09:04:37,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814881075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:04:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988119246] [2023-08-26 09:04:37,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:04:37,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:04:37,406 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:04:37,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-26 09:04:37,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:04:37,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:04:37,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:04:37,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:04:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:04:37,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:04:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:38,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988119246] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:04:38,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:04:38,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2023-08-26 09:04:38,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422269820] [2023-08-26 09:04:38,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:04:38,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:04:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:04:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:04:38,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:04:38,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:04:38,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 1309 transitions, 37490 flow. Second operand has 22 states, 22 states have (on average 292.1363636363636) internal successors, (6427), 22 states have internal predecessors, (6427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:38,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:04:38,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:04:38,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:04:42,619 INFO L124 PetriNetUnfolderBase]: 4976/9545 cut-off events. [2023-08-26 09:04:42,619 INFO L125 PetriNetUnfolderBase]: For 451372/451389 co-relation queries the response was YES. [2023-08-26 09:04:42,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98942 conditions, 9545 events. 4976/9545 cut-off events. For 451372/451389 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 79702 event pairs, 670 based on Foata normal form. 8/9275 useless extension candidates. Maximal degree in co-relation 98746. Up to 7134 conditions per place. [2023-08-26 09:04:42,786 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1317 selfloop transitions, 107 changer transitions 18/1459 dead transitions. [2023-08-26 09:04:42,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1459 transitions, 43637 flow [2023-08-26 09:04:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:04:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:04:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4449 transitions. [2023-08-26 09:04:42,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887287024901704 [2023-08-26 09:04:42,789 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4449 transitions. [2023-08-26 09:04:42,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4449 transitions. [2023-08-26 09:04:42,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:04:42,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4449 transitions. [2023-08-26 09:04:42,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 296.6) internal successors, (4449), 15 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:42,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:42,796 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:42,796 INFO L175 Difference]: Start difference. First operand has 565 places, 1309 transitions, 37490 flow. Second operand 15 states and 4449 transitions. [2023-08-26 09:04:42,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1459 transitions, 43637 flow [2023-08-26 09:04:47,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1459 transitions, 43387 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-26 09:04:47,502 INFO L231 Difference]: Finished difference. Result has 579 places, 1362 transitions, 39193 flow [2023-08-26 09:04:47,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=37260, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=39193, PETRI_PLACES=579, PETRI_TRANSITIONS=1362} [2023-08-26 09:04:47,503 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 521 predicate places. [2023-08-26 09:04:47,503 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 1362 transitions, 39193 flow [2023-08-26 09:04:47,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 292.1363636363636) internal successors, (6427), 22 states have internal predecessors, (6427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:47,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:04:47,504 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:04:47,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-08-26 09:04:47,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:47,705 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:04:47,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:04:47,705 INFO L85 PathProgramCache]: Analyzing trace with hash -856153900, now seen corresponding path program 51 times [2023-08-26 09:04:47,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:04:47,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139347200] [2023-08-26 09:04:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:04:47,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:04:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:04:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:48,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:04:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139347200] [2023-08-26 09:04:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139347200] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:04:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493590675] [2023-08-26 09:04:48,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:04:48,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:48,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:04:48,141 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:04:48,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-26 09:04:48,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:04:48,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:04:48,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:04:48,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:04:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:04:48,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:04:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493590675] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:04:48,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:04:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2023-08-26 09:04:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440771909] [2023-08-26 09:04:48,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:04:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:04:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:04:48,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:04:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:04:48,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:04:48,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 1362 transitions, 39193 flow. Second operand has 22 states, 22 states have (on average 292.09090909090907) internal successors, (6426), 22 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:48,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:04:48,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:04:48,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:04:53,822 INFO L124 PetriNetUnfolderBase]: 5051/9660 cut-off events. [2023-08-26 09:04:53,823 INFO L125 PetriNetUnfolderBase]: For 469436/469453 co-relation queries the response was YES. [2023-08-26 09:04:53,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101060 conditions, 9660 events. 5051/9660 cut-off events. For 469436/469453 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 80691 event pairs, 725 based on Foata normal form. 8/9368 useless extension candidates. Maximal degree in co-relation 100858. Up to 7548 conditions per place. [2023-08-26 09:04:54,035 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1320 selfloop transitions, 91 changer transitions 18/1446 dead transitions. [2023-08-26 09:04:54,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1446 transitions, 43607 flow [2023-08-26 09:04:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:04:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:04:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3555 transitions. [2023-08-26 09:04:54,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882699868938401 [2023-08-26 09:04:54,038 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3555 transitions. [2023-08-26 09:04:54,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3555 transitions. [2023-08-26 09:04:54,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:04:54,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3555 transitions. [2023-08-26 09:04:54,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 296.25) internal successors, (3555), 12 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:54,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:54,044 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:54,044 INFO L175 Difference]: Start difference. First operand has 579 places, 1362 transitions, 39193 flow. Second operand 12 states and 3555 transitions. [2023-08-26 09:04:54,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1446 transitions, 43607 flow [2023-08-26 09:04:59,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1446 transitions, 43415 flow, removed 92 selfloop flow, removed 3 redundant places. [2023-08-26 09:04:59,324 INFO L231 Difference]: Finished difference. Result has 591 places, 1388 transitions, 39927 flow [2023-08-26 09:04:59,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=39037, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=39927, PETRI_PLACES=591, PETRI_TRANSITIONS=1388} [2023-08-26 09:04:59,325 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 533 predicate places. [2023-08-26 09:04:59,325 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 1388 transitions, 39927 flow [2023-08-26 09:04:59,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 292.09090909090907) internal successors, (6426), 22 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:04:59,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:04:59,326 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:04:59,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-08-26 09:04:59,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:59,526 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:04:59,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:04:59,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1170528624, now seen corresponding path program 52 times [2023-08-26 09:04:59,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:04:59,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043929525] [2023-08-26 09:04:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:04:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:04:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:04:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:04:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:04:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043929525] [2023-08-26 09:04:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043929525] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:04:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855359890] [2023-08-26 09:04:59,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:04:59,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:04:59,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:04:59,930 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:04:59,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-26 09:05:00,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:05:00,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:05:00,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:05:00,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:05:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:05:00,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:05:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855359890] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:05:00,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:05:00,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-26 09:05:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949700643] [2023-08-26 09:05:00,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:05:00,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:05:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:05:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:05:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:05:00,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:05:00,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 1388 transitions, 39927 flow. Second operand has 24 states, 24 states have (on average 291.9583333333333) internal successors, (7007), 24 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:00,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:05:00,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:05:00,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:05:05,390 INFO L124 PetriNetUnfolderBase]: 5049/9665 cut-off events. [2023-08-26 09:05:05,390 INFO L125 PetriNetUnfolderBase]: For 472150/472163 co-relation queries the response was YES. [2023-08-26 09:05:05,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101439 conditions, 9665 events. 5049/9665 cut-off events. For 472150/472163 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 80771 event pairs, 686 based on Foata normal form. 4/9383 useless extension candidates. Maximal degree in co-relation 101232. Up to 7252 conditions per place. [2023-08-26 09:05:05,564 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1325 selfloop transitions, 106 changer transitions 19/1467 dead transitions. [2023-08-26 09:05:05,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1467 transitions, 44519 flow [2023-08-26 09:05:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:05:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:05:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3856 transitions. [2023-08-26 09:05:05,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388748865813086 [2023-08-26 09:05:05,567 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3856 transitions. [2023-08-26 09:05:05,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3856 transitions. [2023-08-26 09:05:05,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:05:05,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3856 transitions. [2023-08-26 09:05:05,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 296.61538461538464) internal successors, (3856), 13 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:05,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:05,573 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:05,573 INFO L175 Difference]: Start difference. First operand has 591 places, 1388 transitions, 39927 flow. Second operand 13 states and 3856 transitions. [2023-08-26 09:05:05,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1467 transitions, 44519 flow [2023-08-26 09:05:11,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 1467 transitions, 44340 flow, removed 79 selfloop flow, removed 3 redundant places. [2023-08-26 09:05:11,160 INFO L231 Difference]: Finished difference. Result has 601 places, 1390 transitions, 40054 flow [2023-08-26 09:05:11,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=39764, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=40054, PETRI_PLACES=601, PETRI_TRANSITIONS=1390} [2023-08-26 09:05:11,161 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 543 predicate places. [2023-08-26 09:05:11,161 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 1390 transitions, 40054 flow [2023-08-26 09:05:11,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 291.9583333333333) internal successors, (7007), 24 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:11,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:05:11,162 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:05:11,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-08-26 09:05:11,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:11,368 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:05:11,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:05:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1591357800, now seen corresponding path program 53 times [2023-08-26 09:05:11,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:05:11,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837989085] [2023-08-26 09:05:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:05:11,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:05:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:05:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:05:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837989085] [2023-08-26 09:05:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837989085] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:05:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146892568] [2023-08-26 09:05:11,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:05:11,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:11,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:05:11,837 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:05:11,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-08-26 09:05:12,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:05:12,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:05:12,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:05:12,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:05:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:05:12,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:05:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146892568] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:05:12,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:05:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2023-08-26 09:05:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063271850] [2023-08-26 09:05:12,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:05:12,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 09:05:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:05:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 09:05:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2023-08-26 09:05:12,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:05:12,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 1390 transitions, 40054 flow. Second operand has 25 states, 25 states have (on average 292.08) internal successors, (7302), 25 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:12,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:05:12,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:05:12,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:05:17,730 INFO L124 PetriNetUnfolderBase]: 5167/9873 cut-off events. [2023-08-26 09:05:17,730 INFO L125 PetriNetUnfolderBase]: For 488931/488944 co-relation queries the response was YES. [2023-08-26 09:05:17,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104162 conditions, 9873 events. 5167/9873 cut-off events. For 488931/488944 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 82760 event pairs, 696 based on Foata normal form. 4/9591 useless extension candidates. Maximal degree in co-relation 103953. Up to 7478 conditions per place. [2023-08-26 09:05:17,925 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1334 selfloop transitions, 125 changer transitions 16/1492 dead transitions. [2023-08-26 09:05:17,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 1492 transitions, 45196 flow [2023-08-26 09:05:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:05:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:05:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4148 transitions. [2023-08-26 09:05:17,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38831679460775137 [2023-08-26 09:05:17,927 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4148 transitions. [2023-08-26 09:05:17,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4148 transitions. [2023-08-26 09:05:17,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:05:17,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4148 transitions. [2023-08-26 09:05:17,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 296.2857142857143) internal successors, (4148), 14 states have internal predecessors, (4148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:17,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:17,934 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:17,934 INFO L175 Difference]: Start difference. First operand has 601 places, 1390 transitions, 40054 flow. Second operand 14 states and 4148 transitions. [2023-08-26 09:05:17,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 1492 transitions, 45196 flow [2023-08-26 09:05:23,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 1492 transitions, 44987 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-08-26 09:05:23,637 INFO L231 Difference]: Finished difference. Result has 607 places, 1406 transitions, 40686 flow [2023-08-26 09:05:23,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=39853, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=40686, PETRI_PLACES=607, PETRI_TRANSITIONS=1406} [2023-08-26 09:05:23,638 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 549 predicate places. [2023-08-26 09:05:23,638 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 1406 transitions, 40686 flow [2023-08-26 09:05:23,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 292.08) internal successors, (7302), 25 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:23,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:05:23,639 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:05:23,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-08-26 09:05:23,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-08-26 09:05:23,839 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:05:23,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:05:23,839 INFO L85 PathProgramCache]: Analyzing trace with hash -195608674, now seen corresponding path program 54 times [2023-08-26 09:05:23,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:05:23,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665341050] [2023-08-26 09:05:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:05:23,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:05:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:05:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:24,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:05:24,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665341050] [2023-08-26 09:05:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665341050] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:05:24,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510450107] [2023-08-26 09:05:24,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:05:24,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:24,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:05:24,225 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:05:24,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-08-26 09:05:24,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-26 09:05:24,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:05:24,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:05:24,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:05:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:05:24,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:05:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510450107] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:05:24,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:05:24,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 19 [2023-08-26 09:05:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804470972] [2023-08-26 09:05:24,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:05:24,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 09:05:24,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:05:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 09:05:24,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-08-26 09:05:24,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:05:24,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 1406 transitions, 40686 flow. Second operand has 21 states, 21 states have (on average 292.1904761904762) internal successors, (6136), 21 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:24,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:05:24,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:05:24,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:05:30,164 INFO L124 PetriNetUnfolderBase]: 5168/9883 cut-off events. [2023-08-26 09:05:30,164 INFO L125 PetriNetUnfolderBase]: For 500908/500921 co-relation queries the response was YES. [2023-08-26 09:05:30,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104936 conditions, 9883 events. 5168/9883 cut-off events. For 500908/500921 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 83001 event pairs, 708 based on Foata normal form. 5/9590 useless extension candidates. Maximal degree in co-relation 104725. Up to 7629 conditions per place. [2023-08-26 09:05:30,355 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1352 selfloop transitions, 72 changer transitions 54/1495 dead transitions. [2023-08-26 09:05:30,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 1495 transitions, 45540 flow [2023-08-26 09:05:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:05:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:05:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4138 transitions. [2023-08-26 09:05:30,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3873806403295263 [2023-08-26 09:05:30,358 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4138 transitions. [2023-08-26 09:05:30,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4138 transitions. [2023-08-26 09:05:30,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:05:30,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4138 transitions. [2023-08-26 09:05:30,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 295.57142857142856) internal successors, (4138), 14 states have internal predecessors, (4138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:30,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:30,364 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:30,364 INFO L175 Difference]: Start difference. First operand has 607 places, 1406 transitions, 40686 flow. Second operand 14 states and 4138 transitions. [2023-08-26 09:05:30,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 1495 transitions, 45540 flow [2023-08-26 09:05:35,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 1495 transitions, 45335 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-26 09:05:35,883 INFO L231 Difference]: Finished difference. Result has 618 places, 1403 transitions, 40602 flow [2023-08-26 09:05:35,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=40495, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=40602, PETRI_PLACES=618, PETRI_TRANSITIONS=1403} [2023-08-26 09:05:35,884 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 560 predicate places. [2023-08-26 09:05:35,884 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1403 transitions, 40602 flow [2023-08-26 09:05:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 292.1904761904762) internal successors, (6136), 21 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:35,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:05:35,885 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:05:35,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-08-26 09:05:36,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-08-26 09:05:36,087 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:05:36,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:05:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash 737122890, now seen corresponding path program 55 times [2023-08-26 09:05:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:05:36,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290995584] [2023-08-26 09:05:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:05:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:05:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:05:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:05:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290995584] [2023-08-26 09:05:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290995584] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:05:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146966818] [2023-08-26 09:05:36,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:05:36,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:36,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:05:36,448 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:05:36,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-08-26 09:05:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:05:36,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:05:36,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:05:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:05:36,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:05:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:37,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146966818] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:05:37,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:05:37,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2023-08-26 09:05:37,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972217953] [2023-08-26 09:05:37,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:05:37,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:05:37,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:05:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:05:37,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:05:37,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:05:37,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1403 transitions, 40602 flow. Second operand has 23 states, 23 states have (on average 292.0869565217391) internal successors, (6718), 23 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:37,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:05:37,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:05:37,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:05:41,795 INFO L124 PetriNetUnfolderBase]: 5108/9752 cut-off events. [2023-08-26 09:05:41,795 INFO L125 PetriNetUnfolderBase]: For 498879/498892 co-relation queries the response was YES. [2023-08-26 09:05:41,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104008 conditions, 9752 events. 5108/9752 cut-off events. For 498879/498892 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81562 event pairs, 720 based on Foata normal form. 4/9460 useless extension candidates. Maximal degree in co-relation 103790. Up to 7446 conditions per place. [2023-08-26 09:05:41,975 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1315 selfloop transitions, 120 changer transitions 26/1478 dead transitions. [2023-08-26 09:05:41,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1478 transitions, 45188 flow [2023-08-26 09:05:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:05:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:05:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3264 transitions. [2023-08-26 09:05:41,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888955081615632 [2023-08-26 09:05:41,977 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3264 transitions. [2023-08-26 09:05:41,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3264 transitions. [2023-08-26 09:05:41,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:05:41,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3264 transitions. [2023-08-26 09:05:41,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 296.72727272727275) internal successors, (3264), 11 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:41,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:41,982 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 763.0) internal successors, (9156), 12 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:41,982 INFO L175 Difference]: Start difference. First operand has 618 places, 1403 transitions, 40602 flow. Second operand 11 states and 3264 transitions. [2023-08-26 09:05:41,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1478 transitions, 45188 flow [2023-08-26 09:05:47,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 1478 transitions, 45043 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-08-26 09:05:47,606 INFO L231 Difference]: Finished difference. Result has 617 places, 1405 transitions, 40825 flow [2023-08-26 09:05:47,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=40457, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=40825, PETRI_PLACES=617, PETRI_TRANSITIONS=1405} [2023-08-26 09:05:47,607 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 559 predicate places. [2023-08-26 09:05:47,607 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 1405 transitions, 40825 flow [2023-08-26 09:05:47,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 292.0869565217391) internal successors, (6718), 23 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:47,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:05:47,608 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:05:47,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-08-26 09:05:47,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:47,809 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:05:47,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:05:47,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1893943718, now seen corresponding path program 56 times [2023-08-26 09:05:47,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:05:47,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637221981] [2023-08-26 09:05:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:05:47,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:05:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:05:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:48,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:05:48,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637221981] [2023-08-26 09:05:48,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637221981] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:05:48,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086026743] [2023-08-26 09:05:48,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:05:48,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:48,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:05:48,135 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:05:48,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-08-26 09:05:48,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:05:48,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:05:48,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:05:48,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:05:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:05:48,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:05:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:48,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086026743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:05:48,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:05:48,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2023-08-26 09:05:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010110114] [2023-08-26 09:05:48,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:05:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:05:48,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:05:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:05:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:05:48,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:05:48,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 1405 transitions, 40825 flow. Second operand has 23 states, 23 states have (on average 292.0869565217391) internal successors, (6718), 23 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:48,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:05:48,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:05:48,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:05:53,607 INFO L124 PetriNetUnfolderBase]: 5109/9757 cut-off events. [2023-08-26 09:05:53,607 INFO L125 PetriNetUnfolderBase]: For 496630/496643 co-relation queries the response was YES. [2023-08-26 09:05:53,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103952 conditions, 9757 events. 5109/9757 cut-off events. For 496630/496643 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81640 event pairs, 692 based on Foata normal form. 4/9475 useless extension candidates. Maximal degree in co-relation 103735. Up to 7450 conditions per place. [2023-08-26 09:05:53,782 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1332 selfloop transitions, 87 changer transitions 40/1476 dead transitions. [2023-08-26 09:05:53,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1476 transitions, 45148 flow [2023-08-26 09:05:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:05:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:05:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4431 transitions. [2023-08-26 09:05:53,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871559633027523 [2023-08-26 09:05:53,785 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4431 transitions. [2023-08-26 09:05:53,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4431 transitions. [2023-08-26 09:05:53,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:05:53,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4431 transitions. [2023-08-26 09:05:53,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 295.4) internal successors, (4431), 15 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:53,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:53,792 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:53,792 INFO L175 Difference]: Start difference. First operand has 617 places, 1405 transitions, 40825 flow. Second operand 15 states and 4431 transitions. [2023-08-26 09:05:53,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 1476 transitions, 45148 flow [2023-08-26 09:05:59,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 1476 transitions, 44922 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-26 09:05:59,303 INFO L231 Difference]: Finished difference. Result has 624 places, 1397 transitions, 40521 flow [2023-08-26 09:05:59,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=40603, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=40521, PETRI_PLACES=624, PETRI_TRANSITIONS=1397} [2023-08-26 09:05:59,304 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 566 predicate places. [2023-08-26 09:05:59,304 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 1397 transitions, 40521 flow [2023-08-26 09:05:59,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 292.0869565217391) internal successors, (6718), 23 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:05:59,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:05:59,305 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:05:59,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-08-26 09:05:59,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:59,506 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:05:59,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:05:59,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1974144734, now seen corresponding path program 57 times [2023-08-26 09:05:59,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:05:59,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609098767] [2023-08-26 09:05:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:05:59,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:05:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:05:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:05:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:05:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609098767] [2023-08-26 09:05:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609098767] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:05:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12031469] [2023-08-26 09:05:59,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:05:59,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:05:59,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:05:59,849 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:05:59,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-08-26 09:06:00,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-26 09:06:00,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:00,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:06:00,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:00,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12031469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:00,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-26 09:06:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316418403] [2023-08-26 09:06:00,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:06:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:00,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:06:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:06:00,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:06:00,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 1397 transitions, 40521 flow. Second operand has 20 states, 20 states have (on average 292.15) internal successors, (5843), 20 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:00,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:00,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:06:00,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:05,699 INFO L124 PetriNetUnfolderBase]: 5278/10098 cut-off events. [2023-08-26 09:06:05,699 INFO L125 PetriNetUnfolderBase]: For 522978/522991 co-relation queries the response was YES. [2023-08-26 09:06:05,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108000 conditions, 10098 events. 5278/10098 cut-off events. For 522978/522991 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 85067 event pairs, 712 based on Foata normal form. 4/9798 useless extension candidates. Maximal degree in co-relation 107781. Up to 7636 conditions per place. [2023-08-26 09:06:05,894 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1379 selfloop transitions, 116 changer transitions 21/1533 dead transitions. [2023-08-26 09:06:05,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 1533 transitions, 46933 flow [2023-08-26 09:06:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:06:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:06:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3847 transitions. [2023-08-26 09:06:05,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38784151628188324 [2023-08-26 09:06:05,897 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3847 transitions. [2023-08-26 09:06:05,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3847 transitions. [2023-08-26 09:06:05,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:05,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3847 transitions. [2023-08-26 09:06:05,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 295.9230769230769) internal successors, (3847), 13 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:05,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:05,903 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:05,903 INFO L175 Difference]: Start difference. First operand has 624 places, 1397 transitions, 40521 flow. Second operand 13 states and 3847 transitions. [2023-08-26 09:06:05,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 1533 transitions, 46933 flow [2023-08-26 09:06:11,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 1533 transitions, 46812 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-26 09:06:11,682 INFO L231 Difference]: Finished difference. Result has 630 places, 1445 transitions, 42251 flow [2023-08-26 09:06:11,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=40404, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=42251, PETRI_PLACES=630, PETRI_TRANSITIONS=1445} [2023-08-26 09:06:11,683 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 572 predicate places. [2023-08-26 09:06:11,683 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 1445 transitions, 42251 flow [2023-08-26 09:06:11,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 292.15) internal successors, (5843), 20 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:11,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:11,684 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:11,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:11,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:11,885 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:06:11,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 659780008, now seen corresponding path program 58 times [2023-08-26 09:06:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:11,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651997705] [2023-08-26 09:06:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:11,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:12,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:12,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651997705] [2023-08-26 09:06:12,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651997705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:12,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818248817] [2023-08-26 09:06:12,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:06:12,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:12,165 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:12,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-08-26 09:06:12,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:06:12,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:12,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:06:12,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:12,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:12,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818248817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:12,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:12,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-26 09:06:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33514075] [2023-08-26 09:06:12,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:12,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:06:12,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:12,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:06:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:06:12,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:06:12,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 1445 transitions, 42251 flow. Second operand has 22 states, 22 states have (on average 292.09090909090907) internal successors, (6426), 22 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:12,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:12,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:06:12,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:18,233 INFO L124 PetriNetUnfolderBase]: 5368/10266 cut-off events. [2023-08-26 09:06:18,234 INFO L125 PetriNetUnfolderBase]: For 552851/552868 co-relation queries the response was YES. [2023-08-26 09:06:18,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111278 conditions, 10266 events. 5368/10266 cut-off events. For 552851/552868 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 86741 event pairs, 716 based on Foata normal form. 7/9973 useless extension candidates. Maximal degree in co-relation 111057. Up to 7503 conditions per place. [2023-08-26 09:06:18,433 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1360 selfloop transitions, 173 changer transitions 27/1577 dead transitions. [2023-08-26 09:06:18,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 1577 transitions, 48570 flow [2023-08-26 09:06:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:06:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:06:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4736 transitions. [2023-08-26 09:06:18,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38794233289646135 [2023-08-26 09:06:18,435 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4736 transitions. [2023-08-26 09:06:18,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4736 transitions. [2023-08-26 09:06:18,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:18,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4736 transitions. [2023-08-26 09:06:18,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 296.0) internal successors, (4736), 16 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:18,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:18,443 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:18,443 INFO L175 Difference]: Start difference. First operand has 630 places, 1445 transitions, 42251 flow. Second operand 16 states and 4736 transitions. [2023-08-26 09:06:18,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 1577 transitions, 48570 flow [2023-08-26 09:06:24,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 1577 transitions, 48266 flow, removed 115 selfloop flow, removed 5 redundant places. [2023-08-26 09:06:24,477 INFO L231 Difference]: Finished difference. Result has 644 places, 1474 transitions, 43469 flow [2023-08-26 09:06:24,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=41989, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=43469, PETRI_PLACES=644, PETRI_TRANSITIONS=1474} [2023-08-26 09:06:24,478 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 586 predicate places. [2023-08-26 09:06:24,478 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 1474 transitions, 43469 flow [2023-08-26 09:06:24,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 292.09090909090907) internal successors, (6426), 22 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:24,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:24,479 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:24,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:24,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:24,679 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:06:24,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash 382637218, now seen corresponding path program 59 times [2023-08-26 09:06:24,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:24,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853200880] [2023-08-26 09:06:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:24,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:24,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853200880] [2023-08-26 09:06:24,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853200880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443499083] [2023-08-26 09:06:24,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:06:24,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:24,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:24,990 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:24,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-08-26 09:06:25,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-26 09:06:25,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:25,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:06:25,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:25,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:25,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443499083] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:25,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:25,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-26 09:06:25,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655014912] [2023-08-26 09:06:25,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:25,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 09:06:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 09:06:25,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2023-08-26 09:06:25,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:06:25,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 1474 transitions, 43469 flow. Second operand has 26 states, 26 states have (on average 291.9230769230769) internal successors, (7590), 26 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:25,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:25,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:06:25,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:31,389 INFO L124 PetriNetUnfolderBase]: 5367/10259 cut-off events. [2023-08-26 09:06:31,389 INFO L125 PetriNetUnfolderBase]: For 560309/560326 co-relation queries the response was YES. [2023-08-26 09:06:31,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111974 conditions, 10259 events. 5367/10259 cut-off events. For 560309/560326 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 86590 event pairs, 724 based on Foata normal form. 7/9966 useless extension candidates. Maximal degree in co-relation 111748. Up to 7503 conditions per place. [2023-08-26 09:06:31,592 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1358 selfloop transitions, 170 changer transitions 26/1571 dead transitions. [2023-08-26 09:06:31,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 1571 transitions, 48894 flow [2023-08-26 09:06:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:06:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:06:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4150 transitions. [2023-08-26 09:06:31,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38850402546339635 [2023-08-26 09:06:31,595 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4150 transitions. [2023-08-26 09:06:31,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4150 transitions. [2023-08-26 09:06:31,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:31,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4150 transitions. [2023-08-26 09:06:31,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 296.42857142857144) internal successors, (4150), 14 states have internal predecessors, (4150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:31,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:31,601 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:31,601 INFO L175 Difference]: Start difference. First operand has 644 places, 1474 transitions, 43469 flow. Second operand 14 states and 4150 transitions. [2023-08-26 09:06:31,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 1571 transitions, 48894 flow [2023-08-26 09:06:38,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 1571 transitions, 48535 flow, removed 137 selfloop flow, removed 6 redundant places. [2023-08-26 09:06:38,087 INFO L231 Difference]: Finished difference. Result has 653 places, 1476 transitions, 43615 flow [2023-08-26 09:06:38,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=43164, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=43615, PETRI_PLACES=653, PETRI_TRANSITIONS=1476} [2023-08-26 09:06:38,088 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 595 predicate places. [2023-08-26 09:06:38,088 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 1476 transitions, 43615 flow [2023-08-26 09:06:38,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 291.9230769230769) internal successors, (7590), 26 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:38,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:38,089 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:38,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:38,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-08-26 09:06:38,290 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:06:38,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:38,290 INFO L85 PathProgramCache]: Analyzing trace with hash -702004276, now seen corresponding path program 60 times [2023-08-26 09:06:38,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:38,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711060603] [2023-08-26 09:06:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:38,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:38,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711060603] [2023-08-26 09:06:38,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711060603] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:38,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79877841] [2023-08-26 09:06:38,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:06:38,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:38,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:38,566 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:38,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-08-26 09:06:38,776 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-26 09:06:38,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:38,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:06:38,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:38,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79877841] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:39,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-26 09:06:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053938360] [2023-08-26 09:06:39,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:06:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:06:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:06:39,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:06:39,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 1476 transitions, 43615 flow. Second operand has 24 states, 24 states have (on average 292.0) internal successors, (7008), 24 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:39,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:39,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:06:39,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:44,844 INFO L124 PetriNetUnfolderBase]: 5368/10272 cut-off events. [2023-08-26 09:06:44,845 INFO L125 PetriNetUnfolderBase]: For 560927/560940 co-relation queries the response was YES. [2023-08-26 09:06:44,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112391 conditions, 10272 events. 5368/10272 cut-off events. For 560927/560940 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 86879 event pairs, 716 based on Foata normal form. 4/9976 useless extension candidates. Maximal degree in co-relation 112162. Up to 7549 conditions per place. [2023-08-26 09:06:45,040 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1373 selfloop transitions, 157 changer transitions 28/1575 dead transitions. [2023-08-26 09:06:45,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 1575 transitions, 48965 flow [2023-08-26 09:06:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:06:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:06:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5022 transitions. [2023-08-26 09:06:45,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38717138231439363 [2023-08-26 09:06:45,043 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5022 transitions. [2023-08-26 09:06:45,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5022 transitions. [2023-08-26 09:06:45,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:45,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5022 transitions. [2023-08-26 09:06:45,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 295.4117647058824) internal successors, (5022), 17 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:45,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:45,052 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:45,052 INFO L175 Difference]: Start difference. First operand has 653 places, 1476 transitions, 43615 flow. Second operand 17 states and 5022 transitions. [2023-08-26 09:06:45,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 1575 transitions, 48965 flow [2023-08-26 09:06:51,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 1575 transitions, 48698 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-26 09:06:51,365 INFO L231 Difference]: Finished difference. Result has 664 places, 1479 transitions, 43855 flow [2023-08-26 09:06:51,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=43377, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=43855, PETRI_PLACES=664, PETRI_TRANSITIONS=1479} [2023-08-26 09:06:51,367 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 606 predicate places. [2023-08-26 09:06:51,367 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 1479 transitions, 43855 flow [2023-08-26 09:06:51,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.0) internal successors, (7008), 24 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:51,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:51,368 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:51,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:51,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:51,575 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:06:51,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:51,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1639442768, now seen corresponding path program 61 times [2023-08-26 09:06:51,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:51,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480379972] [2023-08-26 09:06:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:51,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:51,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480379972] [2023-08-26 09:06:51,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480379972] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870146402] [2023-08-26 09:06:51,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:06:51,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:51,956 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:51,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-08-26 09:06:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:52,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:06:52,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:52,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:52,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870146402] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:52,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:52,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-26 09:06:52,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058965910] [2023-08-26 09:06:52,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:52,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:06:52,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:52,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:06:52,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:06:52,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:06:52,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 1479 transitions, 43855 flow. Second operand has 20 states, 20 states have (on average 292.2) internal successors, (5844), 20 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:52,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:52,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:06:52,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:58,056 INFO L124 PetriNetUnfolderBase]: 5363/10249 cut-off events. [2023-08-26 09:06:58,056 INFO L125 PetriNetUnfolderBase]: For 553894/553911 co-relation queries the response was YES. [2023-08-26 09:06:58,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111827 conditions, 10249 events. 5363/10249 cut-off events. For 553894/553911 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 86581 event pairs, 738 based on Foata normal form. 7/9946 useless extension candidates. Maximal degree in co-relation 111595. Up to 8153 conditions per place. [2023-08-26 09:06:58,269 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1434 selfloop transitions, 77 changer transitions 17/1545 dead transitions. [2023-08-26 09:06:58,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 1545 transitions, 48426 flow [2023-08-26 09:06:58,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:06:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:06:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3836 transitions. [2023-08-26 09:06:58,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38673253352152437 [2023-08-26 09:06:58,273 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3836 transitions. [2023-08-26 09:06:58,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3836 transitions. [2023-08-26 09:06:58,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:58,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3836 transitions. [2023-08-26 09:06:58,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 295.0769230769231) internal successors, (3836), 13 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:58,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:58,280 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:58,280 INFO L175 Difference]: Start difference. First operand has 664 places, 1479 transitions, 43855 flow. Second operand 13 states and 3836 transitions. [2023-08-26 09:06:58,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 1545 transitions, 48426 flow [2023-08-26 09:07:04,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 1545 transitions, 47999 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-08-26 09:07:04,488 INFO L231 Difference]: Finished difference. Result has 669 places, 1495 transitions, 44307 flow [2023-08-26 09:07:04,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=43465, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=44307, PETRI_PLACES=669, PETRI_TRANSITIONS=1495} [2023-08-26 09:07:04,489 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 611 predicate places. [2023-08-26 09:07:04,489 INFO L495 AbstractCegarLoop]: Abstraction has has 669 places, 1495 transitions, 44307 flow [2023-08-26 09:07:04,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 292.2) internal successors, (5844), 20 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:04,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:04,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:04,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:04,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-08-26 09:07:04,696 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:07:04,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:04,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1917559960, now seen corresponding path program 62 times [2023-08-26 09:07:04,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:04,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708388693] [2023-08-26 09:07:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:04,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:05,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:05,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708388693] [2023-08-26 09:07:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708388693] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:05,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211790654] [2023-08-26 09:07:05,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:07:05,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:05,027 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:05,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-08-26 09:07:05,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:07:05,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:05,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:07:05,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:07:05,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:05,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211790654] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:05,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:05,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-26 09:07:05,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318300953] [2023-08-26 09:07:05,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:05,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:07:05,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:05,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:07:05,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:07:05,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:07:05,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 1495 transitions, 44307 flow. Second operand has 24 states, 24 states have (on average 292.0416666666667) internal successors, (7009), 24 states have internal predecessors, (7009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:05,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:05,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:07:05,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:11,437 INFO L124 PetriNetUnfolderBase]: 5634/10788 cut-off events. [2023-08-26 09:07:11,438 INFO L125 PetriNetUnfolderBase]: For 605364/605377 co-relation queries the response was YES. [2023-08-26 09:07:11,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118592 conditions, 10788 events. 5634/10788 cut-off events. For 605364/605377 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 92233 event pairs, 745 based on Foata normal form. 4/10484 useless extension candidates. Maximal degree in co-relation 118355. Up to 8247 conditions per place. [2023-08-26 09:07:11,656 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1485 selfloop transitions, 111 changer transitions 13/1626 dead transitions. [2023-08-26 09:07:11,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 1626 transitions, 51012 flow [2023-08-26 09:07:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:07:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:07:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2677 transitions. [2023-08-26 09:07:11,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38983544488131644 [2023-08-26 09:07:11,658 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2677 transitions. [2023-08-26 09:07:11,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2677 transitions. [2023-08-26 09:07:11,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:11,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2677 transitions. [2023-08-26 09:07:11,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 297.44444444444446) internal successors, (2677), 9 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:11,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:11,662 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:11,662 INFO L175 Difference]: Start difference. First operand has 669 places, 1495 transitions, 44307 flow. Second operand 9 states and 2677 transitions. [2023-08-26 09:07:11,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 1626 transitions, 51012 flow [2023-08-26 09:07:18,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 1626 transitions, 50777 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-08-26 09:07:18,848 INFO L231 Difference]: Finished difference. Result has 674 places, 1554 transitions, 46418 flow [2023-08-26 09:07:18,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=44078, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46418, PETRI_PLACES=674, PETRI_TRANSITIONS=1554} [2023-08-26 09:07:18,849 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 616 predicate places. [2023-08-26 09:07:18,849 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 1554 transitions, 46418 flow [2023-08-26 09:07:18,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.0416666666667) internal successors, (7009), 24 states have internal predecessors, (7009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:18,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:18,850 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:18,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:19,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-08-26 09:07:19,051 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:07:19,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1062442608, now seen corresponding path program 63 times [2023-08-26 09:07:19,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:19,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648760404] [2023-08-26 09:07:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:19,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648760404] [2023-08-26 09:07:19,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648760404] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325216819] [2023-08-26 09:07:19,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:07:19,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:19,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:19,485 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:19,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-08-26 09:07:19,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 09:07:19,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:19,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:07:19,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:19,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:20,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325216819] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:20,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-26 09:07:20,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225687349] [2023-08-26 09:07:20,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:20,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:07:20,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:20,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:07:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:07:20,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:07:20,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 1554 transitions, 46418 flow. Second operand has 22 states, 22 states have (on average 292.09090909090907) internal successors, (6426), 22 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:20,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:20,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:07:20,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:26,873 INFO L124 PetriNetUnfolderBase]: 5905/11315 cut-off events. [2023-08-26 09:07:26,874 INFO L125 PetriNetUnfolderBase]: For 672989/673002 co-relation queries the response was YES. [2023-08-26 09:07:27,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126659 conditions, 11315 events. 5905/11315 cut-off events. For 672989/673002 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 97721 event pairs, 769 based on Foata normal form. 5/10981 useless extension candidates. Maximal degree in co-relation 126418. Up to 8331 conditions per place. [2023-08-26 09:07:27,107 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1550 selfloop transitions, 186 changer transitions 30/1783 dead transitions. [2023-08-26 09:07:27,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 1783 transitions, 55967 flow [2023-08-26 09:07:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:07:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:07:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5040 transitions. [2023-08-26 09:07:27,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38855909336211547 [2023-08-26 09:07:27,111 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5040 transitions. [2023-08-26 09:07:27,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5040 transitions. [2023-08-26 09:07:27,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:27,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5040 transitions. [2023-08-26 09:07:27,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 296.47058823529414) internal successors, (5040), 17 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:27,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:27,118 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:27,119 INFO L175 Difference]: Start difference. First operand has 674 places, 1554 transitions, 46418 flow. Second operand 17 states and 5040 transitions. [2023-08-26 09:07:27,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 1783 transitions, 55967 flow [2023-08-26 09:07:35,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 1783 transitions, 55729 flow, removed 119 selfloop flow, removed 1 redundant places. [2023-08-26 09:07:35,295 INFO L231 Difference]: Finished difference. Result has 695 places, 1637 transitions, 49528 flow [2023-08-26 09:07:35,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=46230, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=49528, PETRI_PLACES=695, PETRI_TRANSITIONS=1637} [2023-08-26 09:07:35,297 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 637 predicate places. [2023-08-26 09:07:35,297 INFO L495 AbstractCegarLoop]: Abstraction has has 695 places, 1637 transitions, 49528 flow [2023-08-26 09:07:35,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 292.09090909090907) internal successors, (6426), 22 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:35,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:35,298 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:35,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:35,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-08-26 09:07:35,504 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:07:35,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash -562509874, now seen corresponding path program 64 times [2023-08-26 09:07:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:35,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047184555] [2023-08-26 09:07:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047184555] [2023-08-26 09:07:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047184555] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178556407] [2023-08-26 09:07:35,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:07:35,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:35,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:35,946 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:35,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-08-26 09:07:36,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:07:36,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:36,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:07:36,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:36,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:36,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178556407] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:36,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:36,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-26 09:07:36,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861463373] [2023-08-26 09:07:36,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:36,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 09:07:36,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 09:07:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-08-26 09:07:36,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:07:36,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 1637 transitions, 49528 flow. Second operand has 26 states, 26 states have (on average 292.0) internal successors, (7592), 26 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:36,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:36,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:07:36,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:43,527 INFO L124 PetriNetUnfolderBase]: 5978/11456 cut-off events. [2023-08-26 09:07:43,527 INFO L125 PetriNetUnfolderBase]: For 701439/701452 co-relation queries the response was YES. [2023-08-26 09:07:43,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129692 conditions, 11456 events. 5978/11456 cut-off events. For 701439/701452 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 99044 event pairs, 771 based on Foata normal form. 4/11134 useless extension candidates. Maximal degree in co-relation 129444. Up to 8323 conditions per place. [2023-08-26 09:07:43,770 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1542 selfloop transitions, 223 changer transitions 14/1796 dead transitions. [2023-08-26 09:07:43,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 1796 transitions, 57021 flow [2023-08-26 09:07:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:07:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:07:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4751 transitions. [2023-08-26 09:07:43,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891710353866317 [2023-08-26 09:07:43,773 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4751 transitions. [2023-08-26 09:07:43,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4751 transitions. [2023-08-26 09:07:43,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:43,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4751 transitions. [2023-08-26 09:07:43,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 296.9375) internal successors, (4751), 16 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:43,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:43,781 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:43,781 INFO L175 Difference]: Start difference. First operand has 695 places, 1637 transitions, 49528 flow. Second operand 16 states and 4751 transitions. [2023-08-26 09:07:43,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 1796 transitions, 57021 flow [2023-08-26 09:07:52,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 1796 transitions, 56262 flow, removed 323 selfloop flow, removed 4 redundant places. [2023-08-26 09:07:52,599 INFO L231 Difference]: Finished difference. Result has 709 places, 1670 transitions, 50618 flow [2023-08-26 09:07:52,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=48833, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=50618, PETRI_PLACES=709, PETRI_TRANSITIONS=1670} [2023-08-26 09:07:52,600 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 651 predicate places. [2023-08-26 09:07:52,600 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 1670 transitions, 50618 flow [2023-08-26 09:07:52,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 292.0) internal successors, (7592), 26 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:52,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:52,601 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:52,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:52,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-08-26 09:07:52,802 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:07:52,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1686108970, now seen corresponding path program 65 times [2023-08-26 09:07:52,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:52,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176500780] [2023-08-26 09:07:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:53,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176500780] [2023-08-26 09:07:53,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176500780] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707941864] [2023-08-26 09:07:53,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:07:53,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:53,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:53,205 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:53,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-08-26 09:07:53,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 09:07:53,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:53,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:07:53,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:07:53,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707941864] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:53,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-26 09:07:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620081381] [2023-08-26 09:07:53,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:53,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:07:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:07:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:07:53,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:07:53,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 1670 transitions, 50618 flow. Second operand has 24 states, 24 states have (on average 292.125) internal successors, (7011), 24 states have internal predecessors, (7011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:53,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:53,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:07:53,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:01,687 INFO L124 PetriNetUnfolderBase]: 6325/12167 cut-off events. [2023-08-26 09:08:01,688 INFO L125 PetriNetUnfolderBase]: For 754289/754302 co-relation queries the response was YES. [2023-08-26 09:08:02,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137294 conditions, 12167 events. 6325/12167 cut-off events. For 754289/754302 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 106625 event pairs, 770 based on Foata normal form. 4/11837 useless extension candidates. Maximal degree in co-relation 137042. Up to 8096 conditions per place. [2023-08-26 09:08:02,115 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1507 selfloop transitions, 281 changer transitions 11/1816 dead transitions. [2023-08-26 09:08:02,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 1816 transitions, 57878 flow [2023-08-26 09:08:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:08:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:08:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3865 transitions. [2023-08-26 09:08:02,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38965621534428874 [2023-08-26 09:08:02,118 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3865 transitions. [2023-08-26 09:08:02,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3865 transitions. [2023-08-26 09:08:02,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:02,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3865 transitions. [2023-08-26 09:08:02,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 297.3076923076923) internal successors, (3865), 13 states have internal predecessors, (3865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:02,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:02,127 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:02,127 INFO L175 Difference]: Start difference. First operand has 709 places, 1670 transitions, 50618 flow. Second operand 13 states and 3865 transitions. [2023-08-26 09:08:02,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 1816 transitions, 57878 flow [2023-08-26 09:08:11,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 713 places, 1816 transitions, 57220 flow, removed 237 selfloop flow, removed 7 redundant places. [2023-08-26 09:08:11,467 INFO L231 Difference]: Finished difference. Result has 721 places, 1721 transitions, 52810 flow [2023-08-26 09:08:11,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=49971, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=52810, PETRI_PLACES=721, PETRI_TRANSITIONS=1721} [2023-08-26 09:08:11,469 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 663 predicate places. [2023-08-26 09:08:11,469 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1721 transitions, 52810 flow [2023-08-26 09:08:11,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.125) internal successors, (7011), 24 states have internal predecessors, (7011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:11,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:11,470 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:11,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:11,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:11,676 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:08:11,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:11,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1226283890, now seen corresponding path program 66 times [2023-08-26 09:08:11,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:11,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186725082] [2023-08-26 09:08:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:11,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:12,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:12,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186725082] [2023-08-26 09:08:12,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186725082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600248511] [2023-08-26 09:08:12,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:08:12,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:12,079 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:12,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-08-26 09:08:12,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 09:08:12,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:12,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:08:12,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:12,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:12,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600248511] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:12,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:12,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-26 09:08:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290667201] [2023-08-26 09:08:12,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:12,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:08:12,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:08:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:08:12,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:08:12,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 1721 transitions, 52810 flow. Second operand has 24 states, 24 states have (on average 292.0) internal successors, (7008), 24 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:12,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:12,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:08:12,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:20,774 INFO L124 PetriNetUnfolderBase]: 6333/12189 cut-off events. [2023-08-26 09:08:20,774 INFO L125 PetriNetUnfolderBase]: For 788972/788985 co-relation queries the response was YES. [2023-08-26 09:08:20,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139670 conditions, 12189 events. 6333/12189 cut-off events. For 788972/788985 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 107036 event pairs, 831 based on Foata normal form. 4/11857 useless extension candidates. Maximal degree in co-relation 139410. Up to 8971 conditions per place. [2023-08-26 09:08:21,054 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1599 selfloop transitions, 222 changer transitions 15/1853 dead transitions. [2023-08-26 09:08:21,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 1853 transitions, 59391 flow [2023-08-26 09:08:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 09:08:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 09:08:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5333 transitions. [2023-08-26 09:08:21,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38830639289354885 [2023-08-26 09:08:21,057 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5333 transitions. [2023-08-26 09:08:21,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5333 transitions. [2023-08-26 09:08:21,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:21,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5333 transitions. [2023-08-26 09:08:21,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 296.27777777777777) internal successors, (5333), 18 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:21,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 763.0) internal successors, (14497), 19 states have internal predecessors, (14497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:21,066 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 763.0) internal successors, (14497), 19 states have internal predecessors, (14497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:21,066 INFO L175 Difference]: Start difference. First operand has 721 places, 1721 transitions, 52810 flow. Second operand 18 states and 5333 transitions. [2023-08-26 09:08:21,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 1853 transitions, 59391 flow [2023-08-26 09:08:30,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 1853 transitions, 59000 flow, removed 190 selfloop flow, removed 3 redundant places. [2023-08-26 09:08:30,723 INFO L231 Difference]: Finished difference. Result has 738 places, 1728 transitions, 53197 flow [2023-08-26 09:08:30,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=52439, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=53197, PETRI_PLACES=738, PETRI_TRANSITIONS=1728} [2023-08-26 09:08:30,724 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 680 predicate places. [2023-08-26 09:08:30,724 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 1728 transitions, 53197 flow [2023-08-26 09:08:30,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.0) internal successors, (7008), 24 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:30,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:30,725 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:30,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-08-26 09:08:30,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:30,925 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:08:30,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:30,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1230586440, now seen corresponding path program 67 times [2023-08-26 09:08:30,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:30,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603902602] [2023-08-26 09:08:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:30,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:31,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603902602] [2023-08-26 09:08:31,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603902602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486988883] [2023-08-26 09:08:31,201 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:08:31,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:31,202 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:31,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-08-26 09:08:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:31,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:08:31,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:31,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486988883] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:31,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:31,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-26 09:08:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283134737] [2023-08-26 09:08:31,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:31,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 09:08:31,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 09:08:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-08-26 09:08:31,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:08:31,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 1728 transitions, 53197 flow. Second operand has 26 states, 26 states have (on average 291.9230769230769) internal successors, (7590), 26 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:31,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:31,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:08:31,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:39,411 INFO L124 PetriNetUnfolderBase]: 6332/12177 cut-off events. [2023-08-26 09:08:39,412 INFO L125 PetriNetUnfolderBase]: For 774180/774193 co-relation queries the response was YES. [2023-08-26 09:08:39,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139211 conditions, 12177 events. 6332/12177 cut-off events. For 774180/774193 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 106797 event pairs, 841 based on Foata normal form. 5/11846 useless extension candidates. Maximal degree in co-relation 138948. Up to 8942 conditions per place. [2023-08-26 09:08:39,686 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1571 selfloop transitions, 220 changer transitions 39/1847 dead transitions. [2023-08-26 09:08:39,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 1847 transitions, 59570 flow [2023-08-26 09:08:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:08:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:08:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4455 transitions. [2023-08-26 09:08:39,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892529488859764 [2023-08-26 09:08:39,689 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4455 transitions. [2023-08-26 09:08:39,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4455 transitions. [2023-08-26 09:08:39,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:39,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4455 transitions. [2023-08-26 09:08:39,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 297.0) internal successors, (4455), 15 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:39,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:39,697 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:39,697 INFO L175 Difference]: Start difference. First operand has 738 places, 1728 transitions, 53197 flow. Second operand 15 states and 4455 transitions. [2023-08-26 09:08:39,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 1847 transitions, 59570 flow [2023-08-26 09:08:48,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 1847 transitions, 59189 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-26 09:08:48,907 INFO L231 Difference]: Finished difference. Result has 748 places, 1724 transitions, 53155 flow [2023-08-26 09:08:48,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=52829, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=53155, PETRI_PLACES=748, PETRI_TRANSITIONS=1724} [2023-08-26 09:08:48,908 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 690 predicate places. [2023-08-26 09:08:48,908 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 1724 transitions, 53155 flow [2023-08-26 09:08:48,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 291.9230769230769) internal successors, (7590), 26 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:48,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:48,909 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:48,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:49,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:49,110 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:08:49,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:49,110 INFO L85 PathProgramCache]: Analyzing trace with hash -813619742, now seen corresponding path program 68 times [2023-08-26 09:08:49,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:49,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568747083] [2023-08-26 09:08:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:49,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:49,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568747083] [2023-08-26 09:08:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568747083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633494707] [2023-08-26 09:08:49,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:08:49,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:49,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:49,513 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:49,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-08-26 09:08:49,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:08:49,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:49,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:08:49,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:49,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:50,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633494707] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:50,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:50,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-26 09:08:50,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590518065] [2023-08-26 09:08:50,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:50,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:08:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:50,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:08:50,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:08:50,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:08:50,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 1724 transitions, 53155 flow. Second operand has 20 states, 20 states have (on average 292.2) internal successors, (5844), 20 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:50,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:50,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:08:50,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:57,722 INFO L124 PetriNetUnfolderBase]: 6296/12109 cut-off events. [2023-08-26 09:08:57,722 INFO L125 PetriNetUnfolderBase]: For 764541/764554 co-relation queries the response was YES. [2023-08-26 09:08:58,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138514 conditions, 12109 events. 6296/12109 cut-off events. For 764541/764554 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 106244 event pairs, 847 based on Foata normal form. 4/11760 useless extension candidates. Maximal degree in co-relation 138246. Up to 9329 conditions per place. [2023-08-26 09:08:58,224 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1629 selfloop transitions, 158 changer transitions 26/1830 dead transitions. [2023-08-26 09:08:58,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 1830 transitions, 59420 flow [2023-08-26 09:08:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:08:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:08:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4729 transitions. [2023-08-26 09:08:58,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38736893840104847 [2023-08-26 09:08:58,227 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4729 transitions. [2023-08-26 09:08:58,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4729 transitions. [2023-08-26 09:08:58,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:58,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4729 transitions. [2023-08-26 09:08:58,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 295.5625) internal successors, (4729), 16 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:58,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:58,236 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 763.0) internal successors, (12971), 17 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:08:58,236 INFO L175 Difference]: Start difference. First operand has 748 places, 1724 transitions, 53155 flow. Second operand 16 states and 4729 transitions. [2023-08-26 09:08:58,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 1830 transitions, 59420 flow [2023-08-26 09:09:07,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 1830 transitions, 58906 flow, removed 57 selfloop flow, removed 10 redundant places. [2023-08-26 09:09:07,960 INFO L231 Difference]: Finished difference. Result has 756 places, 1743 transitions, 53794 flow [2023-08-26 09:09:07,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=52712, PETRI_DIFFERENCE_MINUEND_PLACES=736, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=53794, PETRI_PLACES=756, PETRI_TRANSITIONS=1743} [2023-08-26 09:09:07,961 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 698 predicate places. [2023-08-26 09:09:07,961 INFO L495 AbstractCegarLoop]: Abstraction has has 756 places, 1743 transitions, 53794 flow [2023-08-26 09:09:07,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 292.2) internal successors, (5844), 20 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:07,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:09:07,962 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:09:07,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-08-26 09:09:08,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2023-08-26 09:09:08,170 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:09:08,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:09:08,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1548062352, now seen corresponding path program 69 times [2023-08-26 09:09:08,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:09:08,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88073613] [2023-08-26 09:09:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:09:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:09:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:09:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:08,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:09:08,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88073613] [2023-08-26 09:09:08,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88073613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:09:08,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828221748] [2023-08-26 09:09:08,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:09:08,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:08,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:09:08,472 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:09:08,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-08-26 09:09:08,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:09:08,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:09:08,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:09:08,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:09:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:09:08,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:09:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828221748] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:09:09,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:09:09,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 19 [2023-08-26 09:09:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365372791] [2023-08-26 09:09:09,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:09:09,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 09:09:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:09:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 09:09:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-08-26 09:09:09,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:09:09,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 1743 transitions, 53794 flow. Second operand has 21 states, 21 states have (on average 292.0) internal successors, (6132), 21 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:09,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:09:09,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:09:09,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:09:16,728 INFO L124 PetriNetUnfolderBase]: 6311/12115 cut-off events. [2023-08-26 09:09:16,728 INFO L125 PetriNetUnfolderBase]: For 767469/767482 co-relation queries the response was YES. [2023-08-26 09:09:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138968 conditions, 12115 events. 6311/12115 cut-off events. For 767469/767482 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 106132 event pairs, 888 based on Foata normal form. 5/11732 useless extension candidates. Maximal degree in co-relation 138697. Up to 8403 conditions per place. [2023-08-26 09:09:17,016 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1505 selfloop transitions, 286 changer transitions 26/1834 dead transitions. [2023-08-26 09:09:17,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 767 places, 1834 transitions, 59260 flow [2023-08-26 09:09:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:09:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:09:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3862 transitions. [2023-08-26 09:09:17,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3893537655005545 [2023-08-26 09:09:17,019 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3862 transitions. [2023-08-26 09:09:17,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3862 transitions. [2023-08-26 09:09:17,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:09:17,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3862 transitions. [2023-08-26 09:09:17,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 297.0769230769231) internal successors, (3862), 13 states have internal predecessors, (3862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:17,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:17,025 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:17,025 INFO L175 Difference]: Start difference. First operand has 756 places, 1743 transitions, 53794 flow. Second operand 13 states and 3862 transitions. [2023-08-26 09:09:17,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 767 places, 1834 transitions, 59260 flow [2023-08-26 09:09:26,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 1834 transitions, 59035 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-08-26 09:09:26,753 INFO L231 Difference]: Finished difference. Result has 766 places, 1754 transitions, 54609 flow [2023-08-26 09:09:26,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=53594, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=54609, PETRI_PLACES=766, PETRI_TRANSITIONS=1754} [2023-08-26 09:09:26,755 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 708 predicate places. [2023-08-26 09:09:26,755 INFO L495 AbstractCegarLoop]: Abstraction has has 766 places, 1754 transitions, 54609 flow [2023-08-26 09:09:26,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 292.0) internal successors, (6132), 21 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:26,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:09:26,756 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:09:26,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2023-08-26 09:09:26,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:26,961 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:09:26,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:09:26,961 INFO L85 PathProgramCache]: Analyzing trace with hash -429276736, now seen corresponding path program 70 times [2023-08-26 09:09:26,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:09:26,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560661561] [2023-08-26 09:09:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:09:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:09:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:09:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:27,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:09:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560661561] [2023-08-26 09:09:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560661561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:09:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993530561] [2023-08-26 09:09:27,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:09:27,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:27,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:09:27,255 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:09:27,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-08-26 09:09:27,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:09:27,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:09:27,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:09:27,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:09:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:09:27,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:09:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:27,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993530561] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:09:27,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:09:27,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-26 09:09:27,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910002312] [2023-08-26 09:09:27,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:09:27,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:09:27,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:09:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:09:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:09:27,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:09:27,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 1754 transitions, 54609 flow. Second operand has 24 states, 24 states have (on average 292.1666666666667) internal successors, (7012), 24 states have internal predecessors, (7012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:27,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:09:27,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:09:27,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:09:35,873 INFO L124 PetriNetUnfolderBase]: 6285/12078 cut-off events. [2023-08-26 09:09:35,873 INFO L125 PetriNetUnfolderBase]: For 780745/780762 co-relation queries the response was YES. [2023-08-26 09:09:36,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139673 conditions, 12078 events. 6285/12078 cut-off events. For 780745/780762 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 105788 event pairs, 819 based on Foata normal form. 7/11703 useless extension candidates. Maximal degree in co-relation 139396. Up to 7989 conditions per place. [2023-08-26 09:09:36,167 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1489 selfloop transitions, 344 changer transitions 18/1868 dead transitions. [2023-08-26 09:09:36,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 1868 transitions, 61044 flow [2023-08-26 09:09:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:09:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:09:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3868 transitions. [2023-08-26 09:09:36,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995866518802297 [2023-08-26 09:09:36,170 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3868 transitions. [2023-08-26 09:09:36,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3868 transitions. [2023-08-26 09:09:36,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:09:36,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3868 transitions. [2023-08-26 09:09:36,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 297.53846153846155) internal successors, (3868), 13 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:36,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:36,177 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 763.0) internal successors, (10682), 14 states have internal predecessors, (10682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:36,177 INFO L175 Difference]: Start difference. First operand has 766 places, 1754 transitions, 54609 flow. Second operand 13 states and 3868 transitions. [2023-08-26 09:09:36,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 776 places, 1868 transitions, 61044 flow [2023-08-26 09:09:46,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 769 places, 1868 transitions, 60481 flow, removed 85 selfloop flow, removed 7 redundant places. [2023-08-26 09:09:46,788 INFO L231 Difference]: Finished difference. Result has 772 places, 1769 transitions, 55472 flow [2023-08-26 09:09:46,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=54062, PETRI_DIFFERENCE_MINUEND_PLACES=757, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=55472, PETRI_PLACES=772, PETRI_TRANSITIONS=1769} [2023-08-26 09:09:46,790 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 714 predicate places. [2023-08-26 09:09:46,790 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 1769 transitions, 55472 flow [2023-08-26 09:09:46,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.1666666666667) internal successors, (7012), 24 states have internal predecessors, (7012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:46,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:09:46,791 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:09:46,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-08-26 09:09:46,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:46,997 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:09:46,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:09:46,998 INFO L85 PathProgramCache]: Analyzing trace with hash 234991752, now seen corresponding path program 71 times [2023-08-26 09:09:46,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:09:46,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305711439] [2023-08-26 09:09:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:09:46,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:09:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:09:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:09:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305711439] [2023-08-26 09:09:47,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305711439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:09:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100601942] [2023-08-26 09:09:47,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:09:47,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:47,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:09:47,425 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:09:47,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-08-26 09:09:47,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:09:47,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:09:47,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:09:47,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:09:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:09:47,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:09:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:48,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100601942] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:09:48,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:09:48,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-26 09:09:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669288923] [2023-08-26 09:09:48,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:09:48,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:09:48,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:09:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:09:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:09:48,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:09:48,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 772 places, 1769 transitions, 55472 flow. Second operand has 24 states, 24 states have (on average 292.0833333333333) internal successors, (7010), 24 states have internal predecessors, (7010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:48,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:09:48,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:09:48,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:09:56,672 INFO L124 PetriNetUnfolderBase]: 6284/12071 cut-off events. [2023-08-26 09:09:56,672 INFO L125 PetriNetUnfolderBase]: For 795892/795905 co-relation queries the response was YES. [2023-08-26 09:09:56,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140253 conditions, 12071 events. 6284/12071 cut-off events. For 795892/795905 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 105688 event pairs, 874 based on Foata normal form. 4/11693 useless extension candidates. Maximal degree in co-relation 139976. Up to 7989 conditions per place. [2023-08-26 09:09:56,991 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1482 selfloop transitions, 340 changer transitions 21/1860 dead transitions. [2023-08-26 09:09:56,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 782 places, 1860 transitions, 61242 flow [2023-08-26 09:09:56,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:09:56,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:09:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3573 transitions. [2023-08-26 09:09:56,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902359108781127 [2023-08-26 09:09:56,993 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3573 transitions. [2023-08-26 09:09:56,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3573 transitions. [2023-08-26 09:09:56,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:09:56,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3573 transitions. [2023-08-26 09:09:56,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 297.75) internal successors, (3573), 12 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:56,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:57,000 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 763.0) internal successors, (9919), 13 states have internal predecessors, (9919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:09:57,000 INFO L175 Difference]: Start difference. First operand has 772 places, 1769 transitions, 55472 flow. Second operand 12 states and 3573 transitions. [2023-08-26 09:09:57,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 782 places, 1860 transitions, 61242 flow [2023-08-26 09:10:07,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 773 places, 1860 transitions, 60591 flow, removed 91 selfloop flow, removed 9 redundant places. [2023-08-26 09:10:07,705 INFO L231 Difference]: Finished difference. Result has 776 places, 1771 transitions, 55758 flow [2023-08-26 09:10:07,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=54883, PETRI_DIFFERENCE_MINUEND_PLACES=762, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=55758, PETRI_PLACES=776, PETRI_TRANSITIONS=1771} [2023-08-26 09:10:07,706 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 718 predicate places. [2023-08-26 09:10:07,706 INFO L495 AbstractCegarLoop]: Abstraction has has 776 places, 1771 transitions, 55758 flow [2023-08-26 09:10:07,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.0833333333333) internal successors, (7010), 24 states have internal predecessors, (7010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:07,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:10:07,707 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:10:07,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2023-08-26 09:10:07,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-08-26 09:10:07,907 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:10:07,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:10:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash -700721266, now seen corresponding path program 72 times [2023-08-26 09:10:07,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:10:07,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718931703] [2023-08-26 09:10:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:10:07,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:10:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:10:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:10:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718931703] [2023-08-26 09:10:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718931703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:10:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658667405] [2023-08-26 09:10:08,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:10:08,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:10:08,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:10:08,293 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:10:08,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-08-26 09:10:08,545 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-26 09:10:08,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:10:08,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:10:08,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:10:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:10:08,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:10:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:08,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658667405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:10:08,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:10:08,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2023-08-26 09:10:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264610092] [2023-08-26 09:10:08,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:10:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:10:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:10:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:10:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:10:08,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:10:08,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 776 places, 1771 transitions, 55758 flow. Second operand has 22 states, 22 states have (on average 292.09090909090907) internal successors, (6426), 22 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:08,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:10:08,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:10:08,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:10:17,974 INFO L124 PetriNetUnfolderBase]: 6305/12149 cut-off events. [2023-08-26 09:10:17,974 INFO L125 PetriNetUnfolderBase]: For 774320/774333 co-relation queries the response was YES. [2023-08-26 09:10:18,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140240 conditions, 12149 events. 6305/12149 cut-off events. For 774320/774333 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 106548 event pairs, 760 based on Foata normal form. 4/11819 useless extension candidates. Maximal degree in co-relation 139960. Up to 8180 conditions per place. [2023-08-26 09:10:18,424 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1524 selfloop transitions, 289 changer transitions 36/1866 dead transitions. [2023-08-26 09:10:18,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 1866 transitions, 61618 flow [2023-08-26 09:10:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:10:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:10:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4444 transitions. [2023-08-26 09:10:18,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38829183049366534 [2023-08-26 09:10:18,427 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4444 transitions. [2023-08-26 09:10:18,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4444 transitions. [2023-08-26 09:10:18,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:10:18,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4444 transitions. [2023-08-26 09:10:18,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 296.26666666666665) internal successors, (4444), 15 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:18,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:18,434 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:18,434 INFO L175 Difference]: Start difference. First operand has 776 places, 1771 transitions, 55758 flow. Second operand 15 states and 4444 transitions. [2023-08-26 09:10:18,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 1866 transitions, 61618 flow [2023-08-26 09:10:28,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 1866 transitions, 61064 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-08-26 09:10:28,629 INFO L231 Difference]: Finished difference. Result has 785 places, 1772 transitions, 56036 flow [2023-08-26 09:10:28,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=55226, PETRI_DIFFERENCE_MINUEND_PLACES=767, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=56036, PETRI_PLACES=785, PETRI_TRANSITIONS=1772} [2023-08-26 09:10:28,630 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 727 predicate places. [2023-08-26 09:10:28,630 INFO L495 AbstractCegarLoop]: Abstraction has has 785 places, 1772 transitions, 56036 flow [2023-08-26 09:10:28,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 292.09090909090907) internal successors, (6426), 22 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:28,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:10:28,631 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:10:28,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-08-26 09:10:28,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-08-26 09:10:28,831 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:10:28,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:10:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1211025270, now seen corresponding path program 73 times [2023-08-26 09:10:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:10:28,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381483747] [2023-08-26 09:10:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:10:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:10:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:10:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:29,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:10:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381483747] [2023-08-26 09:10:29,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381483747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:10:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895455079] [2023-08-26 09:10:29,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:10:29,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:10:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:10:29,118 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:10:29,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-08-26 09:10:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:10:29,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:10:29,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:10:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:29,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:10:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:29,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895455079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:10:29,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:10:29,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-26 09:10:29,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909819498] [2023-08-26 09:10:29,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:10:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 09:10:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:10:29,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 09:10:29,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-08-26 09:10:29,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:10:29,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 785 places, 1772 transitions, 56036 flow. Second operand has 18 states, 18 states have (on average 292.27777777777777) internal successors, (5261), 18 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:29,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:10:29,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:10:29,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:10:38,044 INFO L124 PetriNetUnfolderBase]: 6362/12264 cut-off events. [2023-08-26 09:10:38,044 INFO L125 PetriNetUnfolderBase]: For 797440/797453 co-relation queries the response was YES. [2023-08-26 09:10:38,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142240 conditions, 12264 events. 6362/12264 cut-off events. For 797440/797453 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 107829 event pairs, 799 based on Foata normal form. 4/11930 useless extension candidates. Maximal degree in co-relation 141957. Up to 9852 conditions per place. [2023-08-26 09:10:38,349 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1732 selfloop transitions, 87 changer transitions 6/1842 dead transitions. [2023-08-26 09:10:38,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 797 places, 1842 transitions, 61210 flow [2023-08-26 09:10:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:10:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:10:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4120 transitions. [2023-08-26 09:10:38,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38569556262872123 [2023-08-26 09:10:38,352 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4120 transitions. [2023-08-26 09:10:38,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4120 transitions. [2023-08-26 09:10:38,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:10:38,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4120 transitions. [2023-08-26 09:10:38,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 294.2857142857143) internal successors, (4120), 14 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:38,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:38,359 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:38,359 INFO L175 Difference]: Start difference. First operand has 785 places, 1772 transitions, 56036 flow. Second operand 14 states and 4120 transitions. [2023-08-26 09:10:38,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 797 places, 1842 transitions, 61210 flow [2023-08-26 09:10:49,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 1842 transitions, 60502 flow, removed 61 selfloop flow, removed 10 redundant places. [2023-08-26 09:10:49,162 INFO L231 Difference]: Finished difference. Result has 794 places, 1810 transitions, 56773 flow [2023-08-26 09:10:49,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=55332, PETRI_DIFFERENCE_MINUEND_PLACES=774, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=56773, PETRI_PLACES=794, PETRI_TRANSITIONS=1810} [2023-08-26 09:10:49,164 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 736 predicate places. [2023-08-26 09:10:49,164 INFO L495 AbstractCegarLoop]: Abstraction has has 794 places, 1810 transitions, 56773 flow [2023-08-26 09:10:49,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 292.27777777777777) internal successors, (5261), 18 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:49,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:10:49,165 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:10:49,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2023-08-26 09:10:49,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:10:49,367 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:10:49,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:10:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash -292151728, now seen corresponding path program 74 times [2023-08-26 09:10:49,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:10:49,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940801801] [2023-08-26 09:10:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:10:49,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:10:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:10:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:49,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:10:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940801801] [2023-08-26 09:10:49,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940801801] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:10:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685640584] [2023-08-26 09:10:49,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:10:49,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:10:49,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:10:49,679 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:10:49,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-08-26 09:10:49,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:10:49,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:10:49,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:10:49,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:10:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:50,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:10:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:50,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685640584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:10:50,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:10:50,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-26 09:10:50,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294085844] [2023-08-26 09:10:50,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:10:50,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:10:50,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:10:50,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:10:50,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:10:50,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:10:50,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 1810 transitions, 56773 flow. Second operand has 24 states, 24 states have (on average 292.0) internal successors, (7008), 24 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:10:50,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:10:50,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:10:50,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:11:00,258 INFO L124 PetriNetUnfolderBase]: 6829/13155 cut-off events. [2023-08-26 09:11:00,258 INFO L125 PetriNetUnfolderBase]: For 894114/894131 co-relation queries the response was YES. [2023-08-26 09:11:00,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153924 conditions, 13155 events. 6829/13155 cut-off events. For 894114/894131 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 116984 event pairs, 835 based on Foata normal form. 4/12803 useless extension candidates. Maximal degree in co-relation 153635. Up to 9033 conditions per place. [2023-08-26 09:11:00,616 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1633 selfloop transitions, 378 changer transitions 17/2045 dead transitions. [2023-08-26 09:11:00,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 2045 transitions, 67228 flow [2023-08-26 09:11:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-26 09:11:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-26 09:11:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5631 transitions. [2023-08-26 09:11:00,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38842519141891424 [2023-08-26 09:11:00,619 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5631 transitions. [2023-08-26 09:11:00,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5631 transitions. [2023-08-26 09:11:00,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:11:00,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5631 transitions. [2023-08-26 09:11:00,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 296.36842105263156) internal successors, (5631), 19 states have internal predecessors, (5631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:00,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 763.0) internal successors, (15260), 20 states have internal predecessors, (15260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:00,629 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 763.0) internal successors, (15260), 20 states have internal predecessors, (15260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:00,629 INFO L175 Difference]: Start difference. First operand has 794 places, 1810 transitions, 56773 flow. Second operand 19 states and 5631 transitions. [2023-08-26 09:11:00,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 811 places, 2045 transitions, 67228 flow [2023-08-26 09:11:13,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 2045 transitions, 66944 flow, removed 136 selfloop flow, removed 2 redundant places. [2023-08-26 09:11:13,046 INFO L231 Difference]: Finished difference. Result has 815 places, 1910 transitions, 61187 flow [2023-08-26 09:11:13,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=56499, PETRI_DIFFERENCE_MINUEND_PLACES=791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=61187, PETRI_PLACES=815, PETRI_TRANSITIONS=1910} [2023-08-26 09:11:13,048 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 757 predicate places. [2023-08-26 09:11:13,048 INFO L495 AbstractCegarLoop]: Abstraction has has 815 places, 1910 transitions, 61187 flow [2023-08-26 09:11:13,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 292.0) internal successors, (7008), 24 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:13,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:11:13,049 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:11:13,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2023-08-26 09:11:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:11:13,255 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:11:13,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:11:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1376601324, now seen corresponding path program 75 times [2023-08-26 09:11:13,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:11:13,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393297259] [2023-08-26 09:11:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:11:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:11:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:11:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:13,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:11:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393297259] [2023-08-26 09:11:13,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393297259] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:11:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569124464] [2023-08-26 09:11:13,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:11:13,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:11:13,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:11:13,545 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:11:13,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-08-26 09:11:13,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 09:11:13,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:11:13,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:11:13,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:11:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:13,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:11:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569124464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:11:14,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:11:14,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-08-26 09:11:14,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546712547] [2023-08-26 09:11:14,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:11:14,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:11:14,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:11:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:11:14,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:11:14,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:11:14,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 1910 transitions, 61187 flow. Second operand has 19 states, 19 states have (on average 292.2105263157895) internal successors, (5552), 19 states have internal predecessors, (5552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:14,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:11:14,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:11:14,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:11:23,899 INFO L124 PetriNetUnfolderBase]: 6839/13189 cut-off events. [2023-08-26 09:11:23,899 INFO L125 PetriNetUnfolderBase]: For 932412/932429 co-relation queries the response was YES. [2023-08-26 09:11:24,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156978 conditions, 13189 events. 6839/13189 cut-off events. For 932412/932429 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 117446 event pairs, 875 based on Foata normal form. 4/12837 useless extension candidates. Maximal degree in co-relation 156683. Up to 10477 conditions per place. [2023-08-26 09:11:24,393 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1823 selfloop transitions, 120 changer transitions 6/1966 dead transitions. [2023-08-26 09:11:24,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 1966 transitions, 66372 flow [2023-08-26 09:11:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:11:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:11:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4125 transitions. [2023-08-26 09:11:24,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38616363976783374 [2023-08-26 09:11:24,397 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4125 transitions. [2023-08-26 09:11:24,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4125 transitions. [2023-08-26 09:11:24,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:11:24,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4125 transitions. [2023-08-26 09:11:24,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 294.64285714285717) internal successors, (4125), 14 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:24,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:24,407 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:24,407 INFO L175 Difference]: Start difference. First operand has 815 places, 1910 transitions, 61187 flow. Second operand 14 states and 4125 transitions. [2023-08-26 09:11:24,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 1966 transitions, 66372 flow [2023-08-26 09:11:38,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 819 places, 1966 transitions, 65181 flow, removed 507 selfloop flow, removed 8 redundant places. [2023-08-26 09:11:38,277 INFO L231 Difference]: Finished difference. Result has 824 places, 1926 transitions, 61018 flow [2023-08-26 09:11:38,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=60108, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=61018, PETRI_PLACES=824, PETRI_TRANSITIONS=1926} [2023-08-26 09:11:38,278 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 766 predicate places. [2023-08-26 09:11:38,278 INFO L495 AbstractCegarLoop]: Abstraction has has 824 places, 1926 transitions, 61018 flow [2023-08-26 09:11:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 292.2105263157895) internal successors, (5552), 19 states have internal predecessors, (5552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:38,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:11:38,279 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:11:38,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2023-08-26 09:11:38,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:11:38,480 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:11:38,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:11:38,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1021807694, now seen corresponding path program 76 times [2023-08-26 09:11:38,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:11:38,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330561591] [2023-08-26 09:11:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:11:38,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:11:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:11:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:38,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:11:38,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330561591] [2023-08-26 09:11:38,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330561591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:11:38,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056498966] [2023-08-26 09:11:38,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:11:38,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:11:38,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:11:38,853 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:11:38,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-08-26 09:11:39,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:11:39,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:11:39,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:11:39,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:11:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:39,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:11:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:39,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056498966] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:11:39,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:11:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-26 09:11:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134842623] [2023-08-26 09:11:39,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:11:39,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 09:11:39,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:11:39,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 09:11:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2023-08-26 09:11:39,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:11:39,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 1926 transitions, 61018 flow. Second operand has 26 states, 26 states have (on average 291.9230769230769) internal successors, (7590), 26 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:39,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:11:39,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:11:39,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:11:49,338 INFO L124 PetriNetUnfolderBase]: 6852/13220 cut-off events. [2023-08-26 09:11:49,338 INFO L125 PetriNetUnfolderBase]: For 924863/924880 co-relation queries the response was YES. [2023-08-26 09:11:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156223 conditions, 13220 events. 6852/13220 cut-off events. For 924863/924880 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 117833 event pairs, 847 based on Foata normal form. 4/12868 useless extension candidates. Maximal degree in co-relation 155923. Up to 9000 conditions per place. [2023-08-26 09:11:49,702 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1624 selfloop transitions, 405 changer transitions 14/2060 dead transitions. [2023-08-26 09:11:49,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 2060 transitions, 68357 flow [2023-08-26 09:11:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:11:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:11:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4460 transitions. [2023-08-26 09:11:49,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38968982088248144 [2023-08-26 09:11:49,705 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4460 transitions. [2023-08-26 09:11:49,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4460 transitions. [2023-08-26 09:11:49,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:11:49,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4460 transitions. [2023-08-26 09:11:49,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 297.3333333333333) internal successors, (4460), 15 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:49,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:49,712 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 763.0) internal successors, (12208), 16 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:11:49,712 INFO L175 Difference]: Start difference. First operand has 824 places, 1926 transitions, 61018 flow. Second operand 15 states and 4460 transitions. [2023-08-26 09:11:49,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 2060 transitions, 68357 flow [2023-08-26 09:12:03,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 831 places, 2060 transitions, 67968 flow, removed 111 selfloop flow, removed 6 redundant places. [2023-08-26 09:12:03,811 INFO L231 Difference]: Finished difference. Result has 835 places, 1935 transitions, 61923 flow [2023-08-26 09:12:03,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=60637, PETRI_DIFFERENCE_MINUEND_PLACES=817, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=61923, PETRI_PLACES=835, PETRI_TRANSITIONS=1935} [2023-08-26 09:12:03,812 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 777 predicate places. [2023-08-26 09:12:03,812 INFO L495 AbstractCegarLoop]: Abstraction has has 835 places, 1935 transitions, 61923 flow [2023-08-26 09:12:03,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 291.9230769230769) internal successors, (7590), 26 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:03,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:12:03,813 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:12:03,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2023-08-26 09:12:04,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:04,014 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:12:04,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:12:04,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1824350442, now seen corresponding path program 77 times [2023-08-26 09:12:04,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:12:04,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44351359] [2023-08-26 09:12:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:12:04,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:12:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:12:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:04,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:12:04,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44351359] [2023-08-26 09:12:04,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44351359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:12:04,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175899137] [2023-08-26 09:12:04,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:12:04,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:04,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:12:04,273 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:12:04,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-08-26 09:12:04,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 09:12:04,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:12:04,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:12:04,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:12:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:04,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:12:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:04,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175899137] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:12:04,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:12:04,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-26 09:12:04,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198610983] [2023-08-26 09:12:04,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:12:04,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 09:12:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:12:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 09:12:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-08-26 09:12:04,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:12:04,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 835 places, 1935 transitions, 61923 flow. Second operand has 21 states, 21 states have (on average 292.14285714285717) internal successors, (6135), 21 states have internal predecessors, (6135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:04,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:12:04,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:12:04,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:12:14,888 INFO L124 PetriNetUnfolderBase]: 6850/13210 cut-off events. [2023-08-26 09:12:14,888 INFO L125 PetriNetUnfolderBase]: For 929326/929343 co-relation queries the response was YES. [2023-08-26 09:12:15,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156817 conditions, 13210 events. 6850/13210 cut-off events. For 929326/929343 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 117667 event pairs, 836 based on Foata normal form. 4/12858 useless extension candidates. Maximal degree in co-relation 156514. Up to 9002 conditions per place. [2023-08-26 09:12:15,256 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1621 selfloop transitions, 411 changer transitions 17/2066 dead transitions. [2023-08-26 09:12:15,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 850 places, 2066 transitions, 69101 flow [2023-08-26 09:12:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:12:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:12:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5044 transitions. [2023-08-26 09:12:15,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38886747359494256 [2023-08-26 09:12:15,259 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5044 transitions. [2023-08-26 09:12:15,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5044 transitions. [2023-08-26 09:12:15,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:12:15,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5044 transitions. [2023-08-26 09:12:15,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 296.70588235294116) internal successors, (5044), 17 states have internal predecessors, (5044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:15,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:15,268 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 763.0) internal successors, (13734), 18 states have internal predecessors, (13734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:15,268 INFO L175 Difference]: Start difference. First operand has 835 places, 1935 transitions, 61923 flow. Second operand 17 states and 5044 transitions. [2023-08-26 09:12:15,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 850 places, 2066 transitions, 69101 flow [2023-08-26 09:12:28,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 2066 transitions, 68392 flow, removed 105 selfloop flow, removed 8 redundant places. [2023-08-26 09:12:28,941 INFO L231 Difference]: Finished difference. Result has 845 places, 1937 transitions, 62260 flow [2023-08-26 09:12:28,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=61291, PETRI_DIFFERENCE_MINUEND_PLACES=826, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=62260, PETRI_PLACES=845, PETRI_TRANSITIONS=1937} [2023-08-26 09:12:28,942 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 787 predicate places. [2023-08-26 09:12:28,942 INFO L495 AbstractCegarLoop]: Abstraction has has 845 places, 1937 transitions, 62260 flow [2023-08-26 09:12:28,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 292.14285714285717) internal successors, (6135), 21 states have internal predecessors, (6135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:28,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:12:28,943 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:12:28,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2023-08-26 09:12:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:29,144 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:12:29,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:12:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash -638872134, now seen corresponding path program 78 times [2023-08-26 09:12:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:12:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565775549] [2023-08-26 09:12:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:12:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:12:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:12:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:12:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565775549] [2023-08-26 09:12:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565775549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:12:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400810229] [2023-08-26 09:12:29,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:12:29,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:12:29,496 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:12:29,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-08-26 09:12:29,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 09:12:29,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:12:29,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-26 09:12:29,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:12:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:29,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:12:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400810229] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:12:30,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:12:30,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-26 09:12:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967801434] [2023-08-26 09:12:30,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:12:30,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:12:30,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:12:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:12:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:12:30,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-26 09:12:30,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 845 places, 1937 transitions, 62260 flow. Second operand has 17 states, 17 states have (on average 292.3529411764706) internal successors, (4970), 17 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:30,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:12:30,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-26 09:12:30,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:12:39,710 INFO L124 PetriNetUnfolderBase]: 6852/13216 cut-off events. [2023-08-26 09:12:39,710 INFO L125 PetriNetUnfolderBase]: For 929999/930016 co-relation queries the response was YES. [2023-08-26 09:12:39,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156843 conditions, 13216 events. 6852/13216 cut-off events. For 929999/930016 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 117743 event pairs, 871 based on Foata normal form. 4/12864 useless extension candidates. Maximal degree in co-relation 156538. Up to 10670 conditions per place. [2023-08-26 09:12:40,065 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1871 selfloop transitions, 90 changer transitions 6/1984 dead transitions. [2023-08-26 09:12:40,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 1984 transitions, 67281 flow [2023-08-26 09:12:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:12:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:12:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4118 transitions. [2023-08-26 09:12:40,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855083317730762 [2023-08-26 09:12:40,068 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4118 transitions. [2023-08-26 09:12:40,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4118 transitions. [2023-08-26 09:12:40,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:12:40,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4118 transitions. [2023-08-26 09:12:40,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 294.14285714285717) internal successors, (4118), 14 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:40,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:40,075 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 763.0) internal successors, (11445), 15 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:40,075 INFO L175 Difference]: Start difference. First operand has 845 places, 1937 transitions, 62260 flow. Second operand 14 states and 4118 transitions. [2023-08-26 09:12:40,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 1984 transitions, 67281 flow [2023-08-26 09:12:53,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 1984 transitions, 66325 flow, removed 51 selfloop flow, removed 15 redundant places. [2023-08-26 09:12:53,936 INFO L231 Difference]: Finished difference. Result has 849 places, 1958 transitions, 62415 flow [2023-08-26 09:12:53,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=61340, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1851, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=62415, PETRI_PLACES=849, PETRI_TRANSITIONS=1958} [2023-08-26 09:12:53,937 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 791 predicate places. [2023-08-26 09:12:53,938 INFO L495 AbstractCegarLoop]: Abstraction has has 849 places, 1958 transitions, 62415 flow [2023-08-26 09:12:53,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 292.3529411764706) internal successors, (4970), 17 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:53,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:12:53,938 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:12:53,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-08-26 09:12:54,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2023-08-26 09:12:54,139 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:12:54,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:12:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash 43753420, now seen corresponding path program 79 times [2023-08-26 09:12:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:12:54,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118897514] [2023-08-26 09:12:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:12:54,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:12:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:12:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:54,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:12:54,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118897514] [2023-08-26 09:12:54,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118897514] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:12:54,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536976730] [2023-08-26 09:12:54,210 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:12:54,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:54,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:12:54,211 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:12:54,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-08-26 09:12:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:12:54,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:12:54,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:12:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:54,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:12:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:54,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536976730] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:12:54,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:12:54,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-26 09:12:54,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218776499] [2023-08-26 09:12:54,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:12:54,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:12:54,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:12:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:12:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:12:54,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:12:54,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 1958 transitions, 62415 flow. Second operand has 15 states, 15 states have (on average 306.3333333333333) internal successors, (4595), 15 states have internal predecessors, (4595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:12:54,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:12:54,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:12:54,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:13:08,218 INFO L124 PetriNetUnfolderBase]: 9212/17405 cut-off events. [2023-08-26 09:13:08,219 INFO L125 PetriNetUnfolderBase]: For 1289564/1289575 co-relation queries the response was YES. [2023-08-26 09:13:08,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211152 conditions, 17405 events. 9212/17405 cut-off events. For 1289564/1289575 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 155676 event pairs, 1882 based on Foata normal form. 75/16891 useless extension candidates. Maximal degree in co-relation 210841. Up to 6373 conditions per place. [2023-08-26 09:13:08,782 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1256 selfloop transitions, 1678 changer transitions 14/2952 dead transitions. [2023-08-26 09:13:08,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 2952 transitions, 99145 flow [2023-08-26 09:13:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-26 09:13:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-26 09:13:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 11448 transitions. [2023-08-26 09:13:08,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055116715667174 [2023-08-26 09:13:08,788 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 11448 transitions. [2023-08-26 09:13:08,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 11448 transitions. [2023-08-26 09:13:08,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:13:08,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 11448 transitions. [2023-08-26 09:13:08,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 309.4054054054054) internal successors, (11448), 37 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:08,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 763.0) internal successors, (28994), 38 states have internal predecessors, (28994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:08,809 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 763.0) internal successors, (28994), 38 states have internal predecessors, (28994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:08,809 INFO L175 Difference]: Start difference. First operand has 849 places, 1958 transitions, 62415 flow. Second operand 37 states and 11448 transitions. [2023-08-26 09:13:08,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 2952 transitions, 99145 flow [2023-08-26 09:13:29,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 2952 transitions, 98833 flow, removed 113 selfloop flow, removed 4 redundant places. [2023-08-26 09:13:29,414 INFO L231 Difference]: Finished difference. Result has 893 places, 2606 transitions, 91351 flow [2023-08-26 09:13:29,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=62212, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=91351, PETRI_PLACES=893, PETRI_TRANSITIONS=2606} [2023-08-26 09:13:29,415 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 835 predicate places. [2023-08-26 09:13:29,415 INFO L495 AbstractCegarLoop]: Abstraction has has 893 places, 2606 transitions, 91351 flow [2023-08-26 09:13:29,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 306.3333333333333) internal successors, (4595), 15 states have internal predecessors, (4595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:29,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:13:29,416 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:13:29,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2023-08-26 09:13:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:13:29,617 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:13:29,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:13:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1770625864, now seen corresponding path program 80 times [2023-08-26 09:13:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:13:29,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55043309] [2023-08-26 09:13:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:13:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:13:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:13:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:29,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:13:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55043309] [2023-08-26 09:13:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55043309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:13:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139061043] [2023-08-26 09:13:29,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:13:29,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:13:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:13:29,687 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:13:29,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-08-26 09:13:29,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:13:29,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:13:29,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:13:29,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:13:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:29,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:13:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:30,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139061043] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:13:30,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:13:30,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-26 09:13:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958062624] [2023-08-26 09:13:30,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:13:30,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 09:13:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:13:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 09:13:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-26 09:13:30,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:13:30,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 2606 transitions, 91351 flow. Second operand has 14 states, 14 states have (on average 306.2142857142857) internal successors, (4287), 14 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:30,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:13:30,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:13:30,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:13:47,444 INFO L124 PetriNetUnfolderBase]: 9720/18582 cut-off events. [2023-08-26 09:13:47,444 INFO L125 PetriNetUnfolderBase]: For 1566312/1566323 co-relation queries the response was YES. [2023-08-26 09:13:48,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236689 conditions, 18582 events. 9720/18582 cut-off events. For 1566312/1566323 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 169208 event pairs, 2525 based on Foata normal form. 17/17898 useless extension candidates. Maximal degree in co-relation 236367. Up to 8623 conditions per place. [2023-08-26 09:13:48,502 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 2385 selfloop transitions, 525 changer transitions 36/2950 dead transitions. [2023-08-26 09:13:48,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 901 places, 2950 transitions, 105398 flow [2023-08-26 09:13:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:13:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:13:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2811 transitions. [2023-08-26 09:13:48,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093490607252075 [2023-08-26 09:13:48,504 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2811 transitions. [2023-08-26 09:13:48,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2811 transitions. [2023-08-26 09:13:48,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:13:48,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2811 transitions. [2023-08-26 09:13:48,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 312.3333333333333) internal successors, (2811), 9 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:48,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:48,508 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 763.0) internal successors, (7630), 10 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:48,508 INFO L175 Difference]: Start difference. First operand has 893 places, 2606 transitions, 91351 flow. Second operand 9 states and 2811 transitions. [2023-08-26 09:13:48,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 901 places, 2950 transitions, 105398 flow [2023-08-26 09:14:15,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 2950 transitions, 103115 flow, removed 1073 selfloop flow, removed 9 redundant places. [2023-08-26 09:14:15,374 INFO L231 Difference]: Finished difference. Result has 896 places, 2606 transitions, 90199 flow [2023-08-26 09:14:15,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=763, PETRI_DIFFERENCE_MINUEND_FLOW=89088, PETRI_DIFFERENCE_MINUEND_PLACES=884, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=525, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2081, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=90199, PETRI_PLACES=896, PETRI_TRANSITIONS=2606} [2023-08-26 09:14:15,376 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 838 predicate places. [2023-08-26 09:14:15,376 INFO L495 AbstractCegarLoop]: Abstraction has has 896 places, 2606 transitions, 90199 flow [2023-08-26 09:14:15,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 306.2142857142857) internal successors, (4287), 14 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:14:15,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:14:15,377 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:14:15,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-08-26 09:14:15,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:14:15,581 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-26 09:14:15,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:14:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash 260844078, now seen corresponding path program 81 times [2023-08-26 09:14:15,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:14:15,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613880236] [2023-08-26 09:14:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:14:15,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:14:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:14:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:14:15,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:14:15,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613880236] [2023-08-26 09:14:15,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613880236] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:14:15,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260267031] [2023-08-26 09:14:15,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:14:15,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:14:15,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:14:15,655 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:14:15,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-08-26 09:14:15,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 09:14:15,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:14:15,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:14:15,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:14:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:14:15,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:14:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:14:16,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260267031] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:14:16,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:14:16,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-26 09:14:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428246094] [2023-08-26 09:14:16,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:14:16,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:14:16,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:14:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:14:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:14:16,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-26 09:14:16,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 896 places, 2606 transitions, 90199 flow. Second operand has 16 states, 16 states have (on average 306.4375) internal successors, (4903), 16 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:14:16,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:14:16,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-26 09:14:16,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-26 09:14:27,722 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 09:14:27,722 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 09:14:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:14:28,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONASSERT (53 of 54 remaining) [2023-08-26 09:14:28,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2023-08-26 09:14:28,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:14:28,549 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). [2023-08-26 09:14:28,550 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (52 of 54 remaining) [2023-08-26 09:14:28,550 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (51 of 54 remaining) [2023-08-26 09:14:28,550 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (50 of 54 remaining) [2023-08-26 09:14:28,550 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (49 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONDATA_RACE (48 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (47 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (46 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (45 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (44 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (43 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (42 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (41 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (40 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (39 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (38 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (37 of 54 remaining) [2023-08-26 09:14:28,551 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (36 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (35 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (32 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (31 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (30 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (29 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (28 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (27 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (26 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (25 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (24 of 54 remaining) [2023-08-26 09:14:28,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (23 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (22 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (21 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (20 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (17 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (16 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (15 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (14 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONDATA_RACE (13 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (12 of 54 remaining) [2023-08-26 09:14:28,553 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (11 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (10 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (9 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (8 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (7 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (6 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (5 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (4 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (3 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (2 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (1 of 54 remaining) [2023-08-26 09:14:28,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (0 of 54 remaining) [2023-08-26 09:14:28,554 INFO L445 BasicCegarLoop]: Path program histogram: [81, 6, 6, 2, 1, 1] [2023-08-26 09:14:28,558 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 09:14:28,558 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 09:14:28,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:14:28 BasicIcfg [2023-08-26 09:14:28,561 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 09:14:28,561 INFO L158 Benchmark]: Toolchain (without parser) took 780621.41ms. Allocated memory was 394.3MB in the beginning and 14.8GB in the end (delta: 14.4GB). Free memory was 370.3MB in the beginning and 5.5GB in the end (delta: -5.1GB). Peak memory consumption was 9.3GB. Max. memory is 16.0GB. [2023-08-26 09:14:28,561 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 394.3MB. Free memory was 370.5MB in the beginning and 370.4MB in the end (delta: 77.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 09:14:28,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.80ms. Allocated memory is still 394.3MB. Free memory was 369.9MB in the beginning and 358.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 09:14:28,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.08ms. Allocated memory is still 394.3MB. Free memory was 358.3MB in the beginning and 355.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:14:28,562 INFO L158 Benchmark]: Boogie Preprocessor took 51.78ms. Allocated memory is still 394.3MB. Free memory was 355.9MB in the beginning and 353.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:14:28,562 INFO L158 Benchmark]: RCFGBuilder took 706.42ms. Allocated memory is still 394.3MB. Free memory was 353.8MB in the beginning and 329.3MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-26 09:14:28,562 INFO L158 Benchmark]: TraceAbstraction took 779545.69ms. Allocated memory was 394.3MB in the beginning and 14.8GB in the end (delta: 14.4GB). Free memory was 328.6MB in the beginning and 5.5GB in the end (delta: -5.1GB). Peak memory consumption was 9.3GB. Max. memory is 16.0GB. [2023-08-26 09:14:28,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 394.3MB. Free memory was 370.5MB in the beginning and 370.4MB in the end (delta: 77.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 248.80ms. Allocated memory is still 394.3MB. Free memory was 369.9MB in the beginning and 358.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.08ms. Allocated memory is still 394.3MB. Free memory was 358.3MB in the beginning and 355.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 51.78ms. Allocated memory is still 394.3MB. Free memory was 355.9MB in the beginning and 353.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 706.42ms. Allocated memory is still 394.3MB. Free memory was 353.8MB in the beginning and 329.3MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 779545.69ms. Allocated memory was 394.3MB in the beginning and 14.8GB in the end (delta: 14.4GB). Free memory was 328.6MB in the beginning and 5.5GB in the end (delta: -5.1GB). Peak memory consumption was 9.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 316 PlacesBefore, 58 PlacesAfterwards, 324 TransitionsBefore, 56 TransitionsAfterwards, 21296 CoEnabledTransitionPairs, 10 FixpointIterations, 159 TrivialSequentialCompositions, 219 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 30 ConcurrentYvCompositions, 10 ChoiceCompositions, 428 TotalNumberOfCompositions, 25615 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21874, independent: 21719, independent conditional: 0, independent unconditional: 21719, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12377, independent: 12347, independent conditional: 0, independent unconditional: 12347, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21874, independent: 9372, independent conditional: 0, independent unconditional: 9372, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 12377, unknown conditional: 0, unknown unconditional: 12377] , Statistics on independence cache: Total cache size (in pairs): 175, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 304/763 universal loopers) in iteration 97,while PetriNetUnfolder was constructing finite prefix that currently has 159896 conditions, 13040 events (6689/13039 cut-off events. For 1085086/1085097 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 125208 event pairs, 1615 based on Foata normal form. 29/13295 useless extension candidates. Maximal degree in co-relation 159571. Up to 4864 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 489 locations, 54 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: 779.3s, OverallIterations: 97, TraceHistogramMax: 4, PathProgramHistogramMax: 81, EmptinessCheckTime: 0.0s, AutomataDifference: 693.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7161 SdHoareTripleChecker+Valid, 23.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7161 mSDsluCounter, 441 SdHoareTripleChecker+Invalid, 19.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 282 mSDsCounter, 411 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47434 IncrementalHoareTripleChecker+Invalid, 47845 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 411 mSolverCounterUnsat, 159 mSDtfsCounter, 47434 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5514 GetRequests, 3302 SyntacticMatches, 251 SemanticMatches, 1961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9629 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91351occurred in iteration=95, InterpolantAutomatonStates: 1268, 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: 1.5s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 42.8s InterpolantComputationTime, 4500 NumberOfCodeBlocks, 4500 NumberOfCodeBlocksAsserted, 319 NumberOfCheckSat, 6385 ConstructedInterpolants, 0 QuantifiedInterpolants, 64963 SizeOfPredicates, 1600 NumberOfNonLiveVariables, 27463 ConjunctsInSsa, 3978 ConjunctsInUnsatCore, 267 InterpolantComputations, 12 PerfectInterpolantSequences, 442/2608 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown